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CX2SA > SATDIG 04.01.18 23:48l 1049 Lines 44938 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: doppler shift (John)
2. Re: doppler shift (Nick Hart)
3. Re: doppler shift (Nick Hart)
4. FS: Kenwood TS2000 HF/VHF/UHF/satellite radio (John Geiger)
5. Re: doppler shift (Greg D)
6. WISP step by step guide by Steve Bible N7HPR ? (christy hunter)
----------------------------------------------------------------------
Message: 1
Date: Thu, 4 Jan 2018 19:46:20 -0000
From: "John" <john@xxxxx.xxx.xx>
To: "'Nick Hart'" <nickhart@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] doppler shift
Message-ID: <056201d38594$b22ca280$1685e780$@xxxxx.xxx.xx>
Content-Type: text/plain; charset="us-ascii"
Hi Nick,
It all depends on the knowledge and skillset of the scouts in question. My
last significant AMSAT demo was done during JOTA, and at that point we had
between 100 and 150 young people come through the shack doors throughout the
weekend. We didn't have a huge amount of time to explain everything or go
really interactive with the control or tracking, and to be honest most of
them were amazed enough that they could hear voices coming back from space,
so when we listened in to one of the Italian ARISS contacts, they were even
more thrilled! My trusty FT-847, SatPC32, ERC-M interface and Kenpro KR5600
did the job nicely, we made quite a few QSOs, and we got to listen to a full
ISS pass - something the 80 odd people who poured into the shack when it
started will likely not forget for a long time yet.
If your group of scouts is at a level where they've got the understanding,
accuracy and, most importantly, the concentration to follow the full pass,
then there's no reason not to try it manually with them. If, however,
they're less experienced/interested/accurate, then you might find that it's
hard to keep them all doing their respective jobs at once. Remember that
there's only one of you trying to manage four different teams at that point,
so how far you can stretch yourself is another consideration. Especially if
your primary focus is on the actual operation of the QSO.
If you want to demonstrate that it can be done on a budget, get them to
bring those tape-measure yagis they built with them. Hook up a couple of
handhelds or FT817s to them, and demonstrate an FM bird (AO-91, SO-50, or
similar?) for the simplest approach. Then step up the game a bit, adding a
little more challenge. Even if you just listen during the first pass or two,
you'll see the thrill they'll get from knowing it's working with the yagis
they built themselves at the last club meeting, and that's where you can
gauge whether they are ready to step it up. If you want to add a bit more
'competition' to it, then have them run the yagis and handhelds alongside a
full auto-tracking station and see if they can 'match' it (or even 'beat'
it). Never underestimate the power of some healthy competition - give 4
teams identical sets of gear, show them where to point, and you'll find that
they're competing to see who can hear the satellite the loudest in no time.
If, however, you want some successful QSOs, then it's worth having a back-up
plan that you can roll out if you aren't getting success.
One of the biggest things I've found in the past with demonstrations is that
whilst the latest and greatest kit isn't necessary, having a decent setup
that's hassle-free and 'just works' can bail you out of a huge hole. We
found the same thing with HF a few years ago - whilst you can theoretically
make that QSO to the opposite side of the planet on 1W with a wet piece of
string up a tree in the right conditions, it's a lot easier to put on a
successful demonstration with an 8 element HF beam at 80 feet on a tower,
plenty of TX power and a radio with an excellent receiver. And very often
the quality is what will determine whether or not you keep the interest.
Making them work for that contact is all well and good, but sometimes
instant gratification is better for the uninitiated or more casual folk.
There's no hard and fast formula for what will or won't work. You gotta read
your audience, respond to it, and work from there. If you can see they're
getting more and more into it, then teach them a bit more, and add to the
level of work they have to do to make the pass happen. As a wise scouter
once said to me, many years ago (when talking about campfire songs, but the
principle applies to this too): If you're drilling for oil, and you don't
strike it within the first couple of minutes... stop boring!
In short (or long, as it seems to have become)... See what works for you,
but plan to start simple and work upwards! You know your young people better
than I do, so assess their capabilities and challenge them, whilst staying
within those capabilities.
73, and a firm left handshake,
John (XLX)
-----Original Message-----
From: Nick Hart [mailto:nickhart@xxx.xxxx
Sent: 04 January 2018 19:16
To: John <john@xxxxx.xxx.xx>
Cc: jim@xxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] doppler shift
I'm glad you mentioned scouts, John.
I counsel for the radio merit badge for our local scouts, and Elmer our
local middle school's radio club. In the club last month, we completed tape
measure yagis. And, for this month's radio club meeting, I was planning on
having the kids working a couple of birds passing during the meeting time.
I figured that with 10 kids, we could have them in teams for tracking,
tuning, recording and operating under my supervision. I thought it would be
good for them to try to do everything manually once for two reasons. One is
to show that's it's doable on a minimum budget by a teenager. And, the other
is so they'll have an appreciation of everything our more automated rig will
do during our ARISS QSO in March.
>From your comments, I'm rethinking that strategy a bit. Do you think that's
too much?
73!
Nick
> On Jan 4, 2018, at 9:57 AM, John <john@xxxxx.xxx.xx> wrote:
>
> Hey now, don't shoot the messenger! The vast majority of my AMSAT
> demonstrations are done with groups of scouts of various ages, and the
> last thing they need to see is me focussing more on the radio than
> making sure they understand what's going on!
>
> If I've got a piece of software that can correct for doppler shift for
> me, and it can manage pointing my antennas in the right direction,
> then it leaves my focus available for the actual operating, and the
> explanations to the young people who could well be the next generation
> of amateur radio and AMSAT enthusiasts ;) I think that's a far better
> use of my resources than sitting there with my back to the people I'm
> supposed to be introducing to the hobby, and focussing on turning
> dials and pushing rotator controller buttons...
>
> John (XLX)
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
> jim@xxxxx.xxx
> Sent: 04 January 2018 17:46
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] doppler shift
>
>
>
> Ya know, you could MANUALLY tune. It does work. In fact I strongly
> preferred manually tuning for doppler shift vs computer corrected.
>
> Jim
> K6CCC
>
> -----Original Message-----
> From: "John" <john@xxxxx.xxx.xx>
> Sent: Thursday, January 4, 2018 02:10
> To: "'Dave L'" <kb0rfy@x.xxx>, amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] doppler shift
>
>
>
> Hi Dave,
>
> When you say your doppler is too far ahead or behind, do you actually
> mean your overall frequency, or do you mean your split distance?
>
> If you mean your overall frequency then that's really odd, as SatPC32
> has always put me smack bang in the middle of the pass-band if using
> linears (with the correct locator set on login). If this isn't the
> case you can adjust it in the settings files, but it's generally
> calculated based on your locator and the Keplerian data you can
> download (and should be updating every time you open up the app). If,
> however, you mean your offset (ie finding your own downlink) then this
> is always a bit variable for me, but usually pretty close.
>
> SatPC32 does, in my experience, remember your offsets when you adjust
> them (in my case either with the + and - buttons, or the pot at the
> top right of the rig), so that next time you hit that satellite it
> keeps the same offsets. You may find your offset is slightly different
> on different passes, or you may find it's exact every time, but that's
> part of the fun with linears - finding yourself first!
>
> Hope that helps.
>
> 73,
> John (XLX)
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Dave L
> Sent: 03 January 2018 23:32
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] doppler shift
>
> I'm useing satpc and a Yaesu ft-847.
>
> Fm birds are not a problem. SSB I'm either to far ahead or behind.
>
> Any hints or advice would be appreciated.
>
> radio and ant are comp controled
>
> thanks
>
> dave
>
> kb0rfy
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect the
official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Thu, 04 Jan 2018 12:42:37 -0800
From: "Nick Hart" <nickhart@xxx.xxx>
To: John Brier <johnbrier@xxxxx.xxx>, Nick Hart <nickhart@xxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] doppler shift
Message-ID: <058waDupl9600S04.1515098557@xxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Good points all, John.
The challenge is that the day of this month's club meeting, which satellites
are passing over aren't ideal. But, the sequence you suggest absolutely makes
sense otherwise. We'll do our best wish the birds we get.
73!
Nick
------ Original Message ------
Received: Thu, 04 Jan 2018 11:27:56 AM PST
From: John Brier <johnbrier@xxxxx.xxx>
To: Nick Hart <nickhart@xxx.xxx>Cc: John <john@xxxxx.xxx.xx>, AMSAT BB
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] doppler shift
Nobody asked me but I would just start with just listening and
gradually adding more components to the mix. Listen to AO-91 on at
least one pass because the downlink doesn't require much doppler
tuning if at all, then try SO-50 and learn doppler tuning, add audio
recording on another pass, add uplink capability towards the end.
On Thu, Jan 4, 2018 at 2:15 PM, Nick Hart <nickhart@xxx.xxx> wrote:
> I'm glad you mentioned scouts, John.
>
> I counsel for the radio merit badge for our local scouts, and Elmer our
local middle school's radio club. In the club last month, we completed tape
measure yagis. And, for this month's radio club meeting, I was planning on
having the kids working a couple of birds passing during the meeting time.
>
> I figured that with 10 kids, we could have them in teams for tracking,
tuning, recording and operating under my supervision. I thought it would be
good for them to try to do everything manually once for two reasons. One is to
show that's it's doable on a minimum budget by a teenager. And, the other is
so they'll have an appreciation of everything our more automated rig will do
during our ARISS QSO in March.
>
> From your comments, I'm rethinking that strategy a bit. Do you think that's
too much?
>
> 73!
>
> Nick
>
>> On Jan 4, 2018, at 9:57 AM, John <john@xxxxx.xxx.xx> wrote:
>>
>> Hey now, don't shoot the messenger! The vast majority of my AMSAT
>> demonstrations are done with groups of scouts of various ages, and the
last
>> thing they need to see is me focussing more on the radio than making sure
>> they understand what's going on!
>>
>> If I've got a piece of software that can correct for doppler shift for me,
>> and it can manage pointing my antennas in the right direction, then it
>> leaves my focus available for the actual operating, and the explanations
to
>> the young people who could well be the next generation of amateur radio
and
>> AMSAT enthusiasts ;) I think that's a far better use of my resources than
>> sitting there with my back to the people I'm supposed to be introducing to
>> the hobby, and focussing on turning dials and pushing rotator controller
>> buttons...
>>
>> John (XLX)
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> jim@xxxxx.xxx
>> Sent: 04 January 2018 17:46
>> To: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] doppler shift
>>
>>
>>
>> Ya know, you could MANUALLY tune. It does work. In fact I strongly
>> preferred manually tuning for doppler shift vs computer corrected.
>>
>> Jim
>> K6CCC
>>
>> -----Original Message-----
>> From: "John" <john@xxxxx.xxx.xx>
>> Sent: Thursday, January 4, 2018 02:10
>> To: "'Dave L'" <kb0rfy@x.xxx>, amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] doppler shift
>>
>>
>>
>> Hi Dave,
>>
>> When you say your doppler is too far ahead or behind, do you actually mean
>> your overall frequency, or do you mean your split distance?
>>
>> If you mean your overall frequency then that's really odd, as SatPC32 has
>> always put me smack bang in the middle of the pass-band if using linears
>> (with the correct locator set on login). If this isn't the case you can
>> adjust it in the settings files, but it's generally calculated based on
your
>> locator and the Keplerian data you can download (and should be updating
>> every time you open up the app). If, however, you mean your offset (ie
>> finding your own downlink) then this is always a bit variable for me, but
>> usually pretty close.
>>
>> SatPC32 does, in my experience, remember your offsets when you adjust them
>> (in my case either with the + and - buttons, or the pot at the top right
of
>> the rig), so that next time you hit that satellite it keeps the same
>> offsets. You may find your offset is slightly different on different
passes,
>> or you may find it's exact every time, but that's part of the fun with
>> linears - finding yourself first!
>>
>> Hope that helps.
>>
>> 73,
>> John (XLX)
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Dave L
>> Sent: 03 January 2018 23:32
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] doppler shift
>>
>> I'm useing satpc and a Yaesu ft-847.
>>
>> Fm birds are not a problem. SSB I'm either to far ahead or behind.
>>
>> Any hints or advice would be appreciated.
>>
>> radio and ant are comp controled
>>
>> thanks
>>
>> dave
>>
>> kb0rfy
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all
>> interested persons worldwide without requiring membership. Opinions
>> expressed are solely those of the author, and do not reflect the official
>> views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all
>> interested persons worldwide without requiring membership. Opinions
>> expressed are solely those of the author, and do not reflect the official
>> views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all
>> interested persons worldwide without requiring membership. Opinions
>> expressed are solely those of the author, and do not reflect the official
>> views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership. Opinions
expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Thu, 04 Jan 2018 12:46:27 -0800
From: "Nick Hart" <nickhart@xxx.xxx>
To: "John" <john@xxxxx.xxx.xx>, "'Nick Hart'" <nickhart@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] doppler shift
Message-ID: <865waDutb3760S03.1515098787@xxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
How exciting it must have been to get a great demo with such a large group.
Excellent advice, John. I like the competition idea very much, which is why I
had them with 2 separate rigs.
A long time ago, when I used to teach Sunday school, we used a guideline that
a kid's attention span is their age in minutes. I've got 10 to 14 year olds,
so we'll keep it moving from activity to activity that they can handle.
(My own theory is that after a certain age, ones attention span starts working
its way back down.)
------ Original Message ------
Received: Thu, 04 Jan 2018 11:46:38 AM PST
From: "John" <john@xxxxx.xxx.xx>
To: "'Nick Hart'" <nickhart@xxx.xxx>Cc: <amsat-bb@xxxxx.xxx>
Subject: RE: [amsat-bb] doppler shift
Hi Nick,
It all depends on the knowledge and skillset of the scouts in question. My
last significant AMSAT demo was done during JOTA, and at that point we had
between 100 and 150 young people come through the shack doors throughout the
weekend. We didn't have a huge amount of time to explain everything or go
really interactive with the control or tracking, and to be honest most of
them were amazed enough that they could hear voices coming back from space,
so when we listened in to one of the Italian ARISS contacts, they were even
more thrilled! My trusty FT-847, SatPC32, ERC-M interface and Kenpro KR5600
did the job nicely, we made quite a few QSOs, and we got to listen to a full
ISS pass - something the 80 odd people who poured into the shack when it
started will likely not forget for a long time yet.
If your group of scouts is at a level where they've got the understanding,
accuracy and, most importantly, the concentration to follow the full pass,
then there's no reason not to try it manually with them. If, however,
they're less experienced/interested/accurate, then you might find that it's
hard to keep them all doing their respective jobs at once. Remember that
there's only one of you trying to manage four different teams at that point,
so how far you can stretch yourself is another consideration. Especially if
your primary focus is on the actual operation of the QSO.
If you want to demonstrate that it can be done on a budget, get them to
bring those tape-measure yagis they built with them. Hook up a couple of
handhelds or FT817s to them, and demonstrate an FM bird (AO-91, SO-50, or
similar?) for the simplest approach. Then step up the game a bit, adding a
little more challenge. Even if you just listen during the first pass or two,
you'll see the thrill they'll get from knowing it's working with the yagis
they built themselves at the last club meeting, and that's where you can
gauge whether they are ready to step it up. If you want to add a bit more
'competition' to it, then have them run the yagis and handhelds alongside a
full auto-tracking station and see if they can 'match' it (or even 'beat'
it). Never underestimate the power of some healthy competition - give 4
teams identical sets of gear, show them where to point, and you'll find that
they're competing to see who can hear the satellite the loudest in no time.
If, however, you want some successful QSOs, then it's worth having a back-up
plan that you can roll out if you aren't getting success.
One of the biggest things I've found in the past with demonstrations is that
whilst the latest and greatest kit isn't necessary, having a decent setup
that's hassle-free and 'just works' can bail you out of a huge hole. We
found the same thing with HF a few years ago - whilst you can theoretically
make that QSO to the opposite side of the planet on 1W with a wet piece of
string up a tree in the right conditions, it's a lot easier to put on a
successful demonstration with an 8 element HF beam at 80 feet on a tower,
plenty of TX power and a radio with an excellent receiver. And very often
the quality is what will determine whether or not you keep the interest.
Making them work for that contact is all well and good, but sometimes
instant gratification is better for the uninitiated or more casual folk.
There's no hard and fast formula for what will or won't work. You gotta read
your audience, respond to it, and work from there. If you can see they're
getting more and more into it, then teach them a bit more, and add to the
level of work they have to do to make the pass happen. As a wise scouter
once said to me, many years ago (when talking about campfire songs, but the
principle applies to this too): If you're drilling for oil, and you don't
strike it within the first couple of minutes... stop boring!
In short (or long, as it seems to have become)... See what works for you,
but plan to start simple and work upwards! You know your young people better
than I do, so assess their capabilities and challenge them, whilst staying
within those capabilities.
73, and a firm left handshake,
John (XLX)
-----Original Message-----
From: Nick Hart [mailto:nickhart@xxx.xxxx
Sent: 04 January 2018 19:16
To: John <john@xxxxx.xxx.xx>
Cc: jim@xxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] doppler shift
I'm glad you mentioned scouts, John.
I counsel for the radio merit badge for our local scouts, and Elmer our
local middle school's radio club. In the club last month, we completed tape
measure yagis. And, for this month's radio club meeting, I was planning on
having the kids working a couple of birds passing during the meeting time.
I figured that with 10 kids, we could have them in teams for tracking,
tuning, recording and operating under my supervision. I thought it would be
good for them to try to do everything manually once for two reasons. One is
to show that's it's doable on a minimum budget by a teenager. And, the other
is so they'll have an appreciation of everything our more automated rig will
do during our ARISS QSO in March.
From your comments, I'm rethinking that strategy a bit. Do you think that's
too much?
73!
Nick
> On Jan 4, 2018, at 9:57 AM, John <john@xxxxx.xxx.xx> wrote:
>
> Hey now, don't shoot the messenger! The vast majority of my AMSAT
> demonstrations are done with groups of scouts of various ages, and the
> last thing they need to see is me focussing more on the radio than
> making sure they understand what's going on!
>
> If I've got a piece of software that can correct for doppler shift for
> me, and it can manage pointing my antennas in the right direction,
> then it leaves my focus available for the actual operating, and the
> explanations to the young people who could well be the next generation
> of amateur radio and AMSAT enthusiasts ;) I think that's a far better
> use of my resources than sitting there with my back to the people I'm
> supposed to be introducing to the hobby, and focussing on turning
> dials and pushing rotator controller buttons...
>
> John (XLX)
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
> jim@xxxxx.xxx
> Sent: 04 January 2018 17:46
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] doppler shift
>
>
>
> Ya know, you could MANUALLY tune. It does work. In fact I strongly
> preferred manually tuning for doppler shift vs computer corrected.
>
> Jim
> K6CCC
>
> -----Original Message-----
> From: "John" <john@xxxxx.xxx.xx>
> Sent: Thursday, January 4, 2018 02:10
> To: "'Dave L'" <kb0rfy@x.xxx>, amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] doppler shift
>
>
>
> Hi Dave,
>
> When you say your doppler is too far ahead or behind, do you actually
> mean your overall frequency, or do you mean your split distance?
>
> If you mean your overall frequency then that's really odd, as SatPC32
> has always put me smack bang in the middle of the pass-band if using
> linears (with the correct locator set on login). If this isn't the
> case you can adjust it in the settings files, but it's generally
> calculated based on your locator and the Keplerian data you can
> download (and should be updating every time you open up the app). If,
> however, you mean your offset (ie finding your own downlink) then this
> is always a bit variable for me, but usually pretty close.
>
> SatPC32 does, in my experience, remember your offsets when you adjust
> them (in my case either with the + and - buttons, or the pot at the
> top right of the rig), so that next time you hit that satellite it
> keeps the same offsets. You may find your offset is slightly different
> on different passes, or you may find it's exact every time, but that's
> part of the fun with linears - finding yourself first!
>
> Hope that helps.
>
> 73,
> John (XLX)
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Dave L
> Sent: 03 January 2018 23:32
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] doppler shift
>
> I'm useing satpc and a Yaesu ft-847.
>
> Fm birds are not a problem. SSB I'm either to far ahead or behind.
>
> Any hints or advice would be appreciated.
>
> radio and ant are comp controled
>
> thanks
>
> dave
>
> kb0rfy
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
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>
> _______________________________________________
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> to all interested persons worldwide without requiring membership.
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> the official views of AMSAT-NA.
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> to all interested persons worldwide without requiring membership.
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official views of AMSAT-NA.
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------------------------------
Message: 4
Date: Thu, 4 Jan 2018 15:20:14 -0600
From: John Geiger <af5cc2@xxxxx.xxx>
To: kenwood@xxxxxxx.xxx.xxxx AMSAT BB <amsat-bb@xxxxx.xxx>,
"OKtraders@xxxxxxxxxxx.xxxx <oktraders@xxxxxxxxxxx.xxx>, ham4sale
<ham4sale@xxxxxxxxxxx.xxx>, forsale-swap@xxxxxxx.xxx.xxxx
radiogear@xxxxxxxxxxx.xxxx radiogear4sale@xxxxxxxxxxx.xxxx
carolinahamswap@xxxxxxxxxxx.xxx
Subject: [amsat-bb] FS: Kenwood TS2000 HF/VHF/UHF/satellite radio
Message-ID:
<CAHC1P2-jJGBMitJ0-fbp=e0GqtBsk5K5xsR8hfaDx6BRuA1=aA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
I have for sale a Kenwood TS2000 HF/VHF/UHF satellite transceiver. Does
100 watts on HF, 6m and 2m, and 50 watts on 70cm. Has IF DSP for noise
reduction and IF filtering, also has TCXO installed, and CW memory keyer.
The internal TNC in this radio doesn't work so you cannot use it for remote
control by Sky Command.
Also, the radio took a little tumble a couple of months ago and one corner
of the bezel got banged up a little, and a couple of the buttons got pushed
in a little into the bezel but they still do operate. The noise reduction
button is pushed in the furthest and I programmed the PF key to control
noise reduction. I am including a hand mic with 4 programmable buttons on
it so you can use it to control some of these other functions.
The TS2000 has the DRU-3A voice recorder installed, which is a $119 value.
It also comes with a power cord, original box, and manual.
I am asking $550 for it plus any shipping that is needed.
73 John AF5CC
------------------------------
Message: 5
Date: Thu, 4 Jan 2018 13:24:37 -0800
From: Greg D <ko6th.greg@xxxxx.xxx>
To: Nick Hart <nickhart@xxx.xxx>, John <john@xxxxx.xxx.xx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] doppler shift
Message-ID: <9f503194-cf3a-8584-0aac-e11864e37b29@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Following the "contest" approach, perhaps set up teams of a couple of
kids, each with a radio and hand-held beam, and see who can copy the
most number of call signs. As preparation, you'd need to explain a
whole lot of stuff - what a bandpass is, what the track of the bird is
through the sky, doppler shift, etc, etc, etc. Then they can put it to
practice.
A goal of loudest, or such, is kind of subjective; how would you really
measure it? Number of call signs, I think, would be simple and cause
nearly all of the challenges we face in operating to come into play,
without being so horrible that copying one call wouldn't be beyond
reach. So everyone would have some success and feeling of
accomplishment, but still have a competition and a winner.
Just a thought,
Greg KO6TH
Nick Hart wrote:
> How exciting it must have been to get a great demo with such a large group.
>
> Excellent advice, John. I like the competition idea very much, which is
why I
> had them with 2 separate rigs.
>
> A long time ago, when I used to teach Sunday school, we used a guideline
that
> a kid's attention span is their age in minutes. I've got 10 to 14 year
olds,
> so we'll keep it moving from activity to activity that they can handle.
>
> (My own theory is that after a certain age, ones attention span starts
working
> its way back down.)
>
>
>
>
> ------ Original Message ------
> Received: Thu, 04 Jan 2018 11:46:38 AM PST
> From: "John" <john@xxxxx.xxx.xx>
> To: "'Nick Hart'" <nickhart@xxx.xxx>Cc: <amsat-bb@xxxxx.xxx>
> Subject: RE: [amsat-bb] doppler shift
>
> Hi Nick,
>
> It all depends on the knowledge and skillset of the scouts in question. My
> last significant AMSAT demo was done during JOTA, and at that point we had
> between 100 and 150 young people come through the shack doors throughout the
> weekend. We didn't have a huge amount of time to explain everything or go
> really interactive with the control or tracking, and to be honest most of
> them were amazed enough that they could hear voices coming back from space,
> so when we listened in to one of the Italian ARISS contacts, they were even
> more thrilled! My trusty FT-847, SatPC32, ERC-M interface and Kenpro KR5600
> did the job nicely, we made quite a few QSOs, and we got to listen to a full
> ISS pass - something the 80 odd people who poured into the shack when it
> started will likely not forget for a long time yet.
>
> If your group of scouts is at a level where they've got the understanding,
> accuracy and, most importantly, the concentration to follow the full pass,
> then there's no reason not to try it manually with them. If, however,
> they're less experienced/interested/accurate, then you might find that it's
> hard to keep them all doing their respective jobs at once. Remember that
> there's only one of you trying to manage four different teams at that point,
> so how far you can stretch yourself is another consideration. Especially if
> your primary focus is on the actual operation of the QSO.
>
> If you want to demonstrate that it can be done on a budget, get them to
> bring those tape-measure yagis they built with them. Hook up a couple of
> handhelds or FT817s to them, and demonstrate an FM bird (AO-91, SO-50, or
> similar?) for the simplest approach. Then step up the game a bit, adding a
> little more challenge. Even if you just listen during the first pass or two,
> you'll see the thrill they'll get from knowing it's working with the yagis
> they built themselves at the last club meeting, and that's where you can
> gauge whether they are ready to step it up. If you want to add a bit more
> 'competition' to it, then have them run the yagis and handhelds alongside a
> full auto-tracking station and see if they can 'match' it (or even 'beat'
> it). Never underestimate the power of some healthy competition - give 4
> teams identical sets of gear, show them where to point, and you'll find that
> they're competing to see who can hear the satellite the loudest in no time.
> If, however, you want some successful QSOs, then it's worth having a back-up
> plan that you can roll out if you aren't getting success.
>
> One of the biggest things I've found in the past with demonstrations is that
> whilst the latest and greatest kit isn't necessary, having a decent setup
> that's hassle-free and 'just works' can bail you out of a huge hole. We
> found the same thing with HF a few years ago - whilst you can theoretically
> make that QSO to the opposite side of the planet on 1W with a wet piece of
> string up a tree in the right conditions, it's a lot easier to put on a
> successful demonstration with an 8 element HF beam at 80 feet on a tower,
> plenty of TX power and a radio with an excellent receiver. And very often
> the quality is what will determine whether or not you keep the interest.
> Making them work for that contact is all well and good, but sometimes
> instant gratification is better for the uninitiated or more casual folk.
>
> There's no hard and fast formula for what will or won't work. You gotta read
> your audience, respond to it, and work from there. If you can see they're
> getting more and more into it, then teach them a bit more, and add to the
> level of work they have to do to make the pass happen. As a wise scouter
> once said to me, many years ago (when talking about campfire songs, but the
> principle applies to this too): If you're drilling for oil, and you don't
> strike it within the first couple of minutes... stop boring!
>
> In short (or long, as it seems to have become)... See what works for you,
> but plan to start simple and work upwards! You know your young people better
> than I do, so assess their capabilities and challenge them, whilst staying
> within those capabilities.
>
> 73, and a firm left handshake,
> John (XLX)
>
> -----Original Message-----
> From: Nick Hart [mailto:nickhart@xxx.xxxx
> Sent: 04 January 2018 19:16
> To: John <john@xxxxx.xxx.xx>
> Cc: jim@xxxxx.xxxx amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] doppler shift
>
> I'm glad you mentioned scouts, John.
>
> I counsel for the radio merit badge for our local scouts, and Elmer our
> local middle school's radio club. In the club last month, we completed tape
> measure yagis. And, for this month's radio club meeting, I was planning on
> having the kids working a couple of birds passing during the meeting time.
>
> I figured that with 10 kids, we could have them in teams for tracking,
> tuning, recording and operating under my supervision. I thought it would be
> good for them to try to do everything manually once for two reasons. One is
> to show that's it's doable on a minimum budget by a teenager. And, the other
> is so they'll have an appreciation of everything our more automated rig will
> do during our ARISS QSO in March.
>
> From your comments, I'm rethinking that strategy a bit. Do you think that's
> too much?
>
> 73!
>
> Nick
>
>> On Jan 4, 2018, at 9:57 AM, John <john@xxxxx.xxx.xx> wrote:
>>
>> Hey now, don't shoot the messenger! The vast majority of my AMSAT
>> demonstrations are done with groups of scouts of various ages, and the
>> last thing they need to see is me focussing more on the radio than
>> making sure they understand what's going on!
>>
>> If I've got a piece of software that can correct for doppler shift for
>> me, and it can manage pointing my antennas in the right direction,
>> then it leaves my focus available for the actual operating, and the
>> explanations to the young people who could well be the next generation
>> of amateur radio and AMSAT enthusiasts ;) I think that's a far better
>> use of my resources than sitting there with my back to the people I'm
>> supposed to be introducing to the hobby, and focussing on turning
>> dials and pushing rotator controller buttons...
>>
>> John (XLX)
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of
>> jim@xxxxx.xxx
>> Sent: 04 January 2018 17:46
>> To: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] doppler shift
>>
>>
>>
>> Ya know, you could MANUALLY tune. It does work. In fact I strongly
>> preferred manually tuning for doppler shift vs computer corrected.
>>
>> Jim
>> K6CCC
>>
>> -----Original Message-----
>> From: "John" <john@xxxxx.xxx.xx>
>> Sent: Thursday, January 4, 2018 02:10
>> To: "'Dave L'" <kb0rfy@x.xxx>, amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] doppler shift
>>
>>
>>
>> Hi Dave,
>>
>> When you say your doppler is too far ahead or behind, do you actually
>> mean your overall frequency, or do you mean your split distance?
>>
>> If you mean your overall frequency then that's really odd, as SatPC32
>> has always put me smack bang in the middle of the pass-band if using
>> linears (with the correct locator set on login). If this isn't the
>> case you can adjust it in the settings files, but it's generally
>> calculated based on your locator and the Keplerian data you can
>> download (and should be updating every time you open up the app). If,
>> however, you mean your offset (ie finding your own downlink) then this
>> is always a bit variable for me, but usually pretty close.
>>
>> SatPC32 does, in my experience, remember your offsets when you adjust
>> them (in my case either with the + and - buttons, or the pot at the
>> top right of the rig), so that next time you hit that satellite it
>> keeps the same offsets. You may find your offset is slightly different
>> on different passes, or you may find it's exact every time, but that's
>> part of the fun with linears - finding yourself first!
>>
>> Hope that helps.
>>
>> 73,
>> John (XLX)
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Dave L
>> Sent: 03 January 2018 23:32
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] doppler shift
>>
>> I'm useing satpc and a Yaesu ft-847.
>>
>> Fm birds are not a problem. SSB I'm either to far ahead or behind.
>>
>> Any hints or advice would be appreciated.
>>
>> radio and ant are comp controled
>>
>> thanks
>>
>> dave
>>
>> kb0rfy
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect the
> official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Thu, 4 Jan 2018 13:36:18 -0800
From: christy hunter <cchunter3@xxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] WISP step by step guide by Steve Bible N7HPR ?
Message-ID: <b6b06d5d-8a9f-8076-5747-1c57495692c0@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
hello All,
1ST Q. I noticed the Amsat - 2005-WISP guide pdf says there is a step by
step guide in the appendix (by N7HPR).
my copy obtained from the AMSAT/NA site,? does not have that appendix
guide. Anyone have a copy? (I also do not see the
'Known Problems file'.
2nd Q. can this program(set of programs) be used without using the
satellite control module, but instead use SatPC32?
e.g. just send messages to Falconsat3.
thanks for any help.
73 Christy KB6LTY
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_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
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------------------------------
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