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CX2SA > SATDIG 05.06.19 21:30l 994 Lines 31117 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: XW2D satellite problem (jeff griffin)
2. Re: Doppler shift question (Robert Bankston)
3. Re: Doppler shift question (John Brier)
4. Re: Doppler shift question (Greg D)
5. Re: Doppler shift question (k6vug@?????????.????
6. Re: Doppler shift question (k6vug@?????????.????
7. Re: satpc32 V. 12.8d (73 Bob W7LRD)
8. Upcoming ARISS Contact Schedule as of 2019-06-05 19:00 UTC
(aj9n@???.????
9. Re: 23cm antenna for L/V (D. Craig Fox)
----------------------------------------------------------------------
Message: 1
Date: Wed, 5 Jun 2019 13:59:37 -0400
From: "jeff griffin" <kb2m@????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] XW2D satellite problem
Message-ID: <006101d51bc8$7140a9d0$53c1fd70$@???>
Content-Type: text/plain; charset="us-ascii"
>From what I was told the satellite has been put in Meteor Scatter test mode,
ya just have to be quick :-)
73 Jeff kb2m
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of alex weimer
via AMSAT-BB
Sent: Wednesday, June 5, 2019 10:13 AM
To: amsat-bb@?????.???
Subject: [amsat-bb] XW2D satellite problem
I was on XW2D at1401 utc pass and experienced extreme intermittent signals
on the downlink ! Every few seconds I could hear myself , then would be cut
off in mid sentence. K9VSW was also on but had the same problem. I would
hear his signal , then he would be cut off as well. Signal when present was
strong but there is a definite problem in the satellite JACK KC7MG
_______________________________________________
Sent via AMSAT-BB@?????.???. 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!
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------------------------------
Message: 2
Date: Wed, 5 Jun 2019 18:08:57 +0000 (UTC)
From: Robert Bankston <ke4al@?????.???>
To: AMSAT BB <amsat-bb@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <288400870.4148.1559758137644@????.?????.???>
Content-Type: text/plain; charset=UTF-8
SO-50 is a VHF uplink and UHF downlink (V/u) satellite.? AO-91 and AO-92 are
UHF uplink and VHF downlink (U/v) satellites.
While there is some doppler effect on VHF, the amount is minimal (2-3 KHz).?
We can pretty much ignore that, with the exception of AO-92, which can
require you to make an adjustment near the end of the pass. (You will notice
your received audio getting scratch.
So, let's focus on UHF doppler effect, which can change as much as +/- 10
KHz during a pass
- Remember the train example.? The sound of a train at a distance and
approaching will sound higher pitched, continually decreasing in pitch until
it arrives (on frequency) at your location (closest), and continues
decreasing in pitch as it passes and pulls a way from you.
- On SO-50, you have to adjust your UHF rx frequency to the higher
pitched frequency at the start of the pass (AOS), on frequency at mid-pass
(TCA), and lower pitched frequency at end of the pass (LOS).? Thus, you will
need to be 10 KHz higher at AOS, 5 Khz half way between AOS and TCA, on
frequency at TCA, -5 KHz halfway between TCA and LOS, and -10 Khz at LOS.?
Just remember you are adjusting your RX frequency to compensate for the
effects of Doppler
- On AO-91 and AO-92, it is the opposite.? You adjust your UHF uplink
frequency so the satellite hears your signal at the designed uplink
frequency. At AOS, doppler effect will cause your signal to sound higher to
the satellite, so you need to start at a lower pitched frequency (-10 KHz),
Halfway between AOS and TCA, you adjust to -5 KHz, and so on, and so on.??
I hope this helps.? If not, don't hesitate to ask.
73,
Robert Bankston, KE4ALAMSAT-NA VP of User Services
Twitter:? @??????????????????? KE4AL.wordpress.com
On Wednesday, June 5, 2019, 12:46:07 PM CDT, Philip Jenkins via AMSAT-BB
<amsat-bb@?????.???> wrote:
This came up at AMSAT Academy at Hamvention, and I still can't wrap my head
around it (something simple I'm not getting, I'm sure). I know the
xmit/receive frequencies aren't shifted, stay the same at the satellite.
SO-50 has a 435 Mhz downlink; as the satellite approaches me from AOS I
lower my receive frequency (and continue lowering it as the bird approaches
LOS). So far so good.
AO 91/92 have a 435 Mhz uplink,; as the satellite approaches me from AOS, I
go up in my transmit frequency.
Here is where I get lost: Why do I* lower* the frequency on 435 Mhz when
receiving a satellite, but *raise* the 435 Mhz frequency when transmitting
to a satelllite?
So, my question boils down to - why should transmit doppler shift go in the
opposite direction from receive on the same band? In both cases, the
satellites are approaching me (from AOS).
Basically, why the difference when I'm transmitting? and when I'm
receiving?
73
Philip N4HF
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 5 Jun 2019 14:11:34 -0400
From: John Brier <johnbrier@?????.???>
To: Paul Stoetzer <n8hm@????.???>
Cc: AMSAT BB <amsat-bb@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID:
<CALn0fKOnQ55qvih=OPF3nY7V0NKbgR6qOq=P2nmGfe_H2hjpzw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Philip you might have a typo here:
You say, for SO-50, "from AOS I lower my receive frequency (and continue
lowering it as the bird approaches LOS." You do lower the frequency through
the pass, but you actually start by raising the frequency, then you lower.
So with AO-91 you start by lowering the frequency and then raise it through
the pass.
73, John Brier KG4AKV
On Wed, Jun 5, 2019, 13:56 Paul Stoetzer via AMSAT-BB <amsat-bb@?????.???>
wrote:
> When you're on the ground listening to SO-50 as it approaches you, the
> RF waves are compressed, and thus the frequency you receive at is
> higher than the frequency the satellite is transmitting at.
>
> When you're transmitting to AO-91 as it approaches you, you need to
> compensate for the fact that your RF waves are going to be compressed
> and appear at the satellite at a higher frequency than you are
> transmitting at. So you have to transmit lower than the nominal
> frequency.
>
> 73,
>
> Paul, N8HM
>
> On Wed, Jun 5, 2019 at 1:45 PM Philip Jenkins via AMSAT-BB
> <amsat-bb@?????.???> wrote:
> >
> > This came up at AMSAT Academy at Hamvention, and I still can't wrap my
> head
> > around it (something simple I'm not getting, I'm sure). I know the
> > xmit/receive frequencies aren't shifted, stay the same at the satellite.
> >
> > SO-50 has a 435 Mhz downlink; as the satellite approaches me from AOS I
> > lower my receive frequency (and continue lowering it as the bird
> approaches
> > LOS). So far so good.
> >
> > AO 91/92 have a 435 Mhz uplink,; as the satellite approaches me from
> AOS, I
> > go up in my transmit frequency.
> >
> > Here is where I get lost: Why do I* lower* the frequency on 435 Mhz when
> > receiving a satellite, but *raise* the 435 Mhz frequency when
> transmitting
> > to a satelllite?
> >
> > So, my question boils down to - why should transmit doppler shift go in
> the
> > opposite direction from receive on the same band? In both cases, the
> > satellites are approaching me (from AOS).
> >
> > Basically, why the difference when I'm transmitting and when I'm
> > receiving?
> >
> > 73
> >
> > Philip N4HF
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Wed, 5 Jun 2019 11:13:03 -0700
From: Greg D <ko6th.greg@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <52aca587-7064-8f02-95c8-373d6c96e99b@?????.???>
Content-Type: text/plain; charset=utf-8
And to add to this, when the satellite passes by you, what was a
compression of the downlink as it approached turns into an expansion as
it passes away. So the downward tuning of the received signal
continues. It started above "actual" at the start of the pass, was
dead-on right as the satellite got to its closest point, and then
continued below actual as it trails off to the setting horizon.
And everything is swapped for your uplink. You start out below center
at the start of the pass, even with it in the middle, and above towards
the end of the pass.
FM satellites (such as SO-50) benefit from the "FM Capture Effect",
where a strong enough FM signal can be a little off frequency and still
get received correctly. This can let you not have to mess with the 2
meter band (whether up or down link), and just focus on the 70cm part.
Tuning both is best, if you can, as it gets you a bit more margin.
Good luck on the birds,
Greg KO6TH
Dave Taylor via AMSAT-BB wrote:
> Look at it from the satellite?s point of view. The satellite is receiving
your Doppler-shifted signal. If you continue transmitting on a fixed
frequency, the satellite sees the frequency dropping. To keep the frequency
seen by the satellite steady, you need to offset the drop by increasing your
transmit frequency at the same rate.
>
> Dave, W8AAS
>
>> On Jun 5, 2019, at 1:41 PM, Philip Jenkins via AMSAT-BB
<amsat-bb@?????.???> wrote:
>>
>> This came up at AMSAT Academy at Hamvention, and I still can't wrap my head
>> around it (something simple I'm not getting, I'm sure). I know the
>> xmit/receive frequencies aren't shifted, stay the same at the satellite.
>>
>> SO-50 has a 435 Mhz downlink; as the satellite approaches me from AOS I
>> lower my receive frequency (and continue lowering it as the bird approaches
>> LOS). So far so good.
>>
>> AO 91/92 have a 435 Mhz uplink,; as the satellite approaches me from AOS, I
>> go up in my transmit frequency.
>>
>> Here is where I get lost: Why do I* lower* the frequency on 435 Mhz when
>> receiving a satellite, but *raise* the 435 Mhz frequency when transmitting
>> to a satelllite?
>>
>> So, my question boils down to - why should transmit doppler shift go in the
>> opposite direction from receive on the same band? In both cases, the
>> satellites are approaching me (from AOS).
>>
>> Basically, why the difference when I'm transmitting and when I'm
>> receiving?
>>
>> 73
>>
>> Philip N4HF
>> _______________________________________________
>> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Wed, 5 Jun 2019 18:31:18 +0000 (UTC)
From: "k6vug@?????????.???? <k6vug@?????????.???>
To: AMSAT BB <amsat-bb@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <709560981.25701.1559759478798@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Let me take a stab at this...
?
The obvious thing about doppler is that, as the sat comes at you the
frequency sounds higher than? its normal frequency and lower when it goes
away from you. Hence we set our receivers at a slightly "higher"? frequency
at AOS and step lower until LOS.
?
The not-so-obvious thing is that a similar effect happens "at the
satellite", so if we transmit at the normal frequency, it will appear
slightly higher at the satellite, as it comes at you. Since the satellite
receiver cannot change, we compensate by transmitting at a slightly lower
frequency so it is "normal at the satellite" and we keep stepping it up
until LOS.
?The amazing/confusing thing about space is that everything is relative,
i.e., the sat and the earth station are just moving relative to each other.
?
Hope that helps !
?
73!
Umesh
k6vug
?
On Wednesday, June 5, 2019, 10:45:46 AM PDT, Philip Jenkins via AMSAT-BB
<amsat-bb@?????.???> wrote:
This came up at AMSAT Academy at Hamvention, and I still can't wrap my head
around it (something simple I'm not getting, I'm sure). I know the
xmit/receive frequencies aren't shifted, stay the same at the satellite.
SO-50 has a 435 Mhz downlink; as the satellite approaches me from AOS I
lower my receive frequency (and continue lowering it as the bird approaches
LOS). So far so good.
AO 91/92 have a 435 Mhz uplink,; as the satellite approaches me from AOS, I
go up in my transmit frequency.
Here is where I get lost: Why do I* lower* the frequency on 435 Mhz when
receiving a satellite, but *raise* the 435 Mhz frequency when transmitting
to a satelllite?
So, my question boils down to - why should transmit doppler shift go in the
opposite direction from receive on the same band? In both cases, the
satellites are approaching me (from AOS).
Basically, why the difference when I'm transmitting? and when I'm
receiving?
73
Philip N4HF
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Wed, 5 Jun 2019 18:49:51 +0000 (UTC)
From: "k6vug@?????????.???? <k6vug@?????????.???>
To: AMSAT BB <amsat-bb@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <173238219.66241.1559760591439@????.?????.???>
Content-Type: text/plain; charset=UTF-8
It appears, the second part of the query is about adjusting for doppler at
VHF vs UHF frequencies.?
Doppler shift is like a percentage, so the amount of, say 5%, is a bigger
number for UHF compared to VHF.
?
Here is the kicker, due to the way FM receiver works, it is tolerant even if
the signal is a little off-frequency.? Since the doppler shift at VHF is
quite small, we rarely have to adjust the FM on VHF.? However the doppler
shift at UHF is beyond the tolerance of a FM receiver, so we have to
frequently adjust UHF for doppler.
?
73!
Umesh
k6vug
?
?
On Wednesday, June 5, 2019, 11:31:18 AM PDT, k6vug@?????????.???
<k6vug@?????????.???> wrote:
Let me take a stab at this...
?
The obvious thing about doppler is that, as the sat comes at you the
frequency sounds higher than? its normal frequency and lower when it goes
away from you. Hence we set our receivers at a slightly "higher"? frequency
at AOS and step lower until LOS.
?
The not-so-obvious thing is that a similar effect happens "at the
satellite", so if we transmit at the normal frequency, it will appear
slightly higher at the satellite, as it comes at you. Since the satellite
receiver cannot change, we compensate by transmitting at a slightly lower
frequency so it is "normal at the satellite" and we keep stepping it up
until LOS.
?The amazing/confusing thing about space is that everything is relative,
i.e., the sat and the earth station are just moving relative to each other.
?
Hope that helps !
?
73!
Umesh
k6vug
?
On Wednesday, June 5, 2019, 10:45:46 AM PDT, Philip Jenkins via AMSAT-BB
<amsat-bb@?????.???> wrote:
This came up at AMSAT Academy at Hamvention, and I still can't wrap my head
around it (something simple I'm not getting, I'm sure). I know the
xmit/receive frequencies aren't shifted, stay the same at the satellite.
SO-50 has a 435 Mhz downlink; as the satellite approaches me from AOS I
lower my receive frequency (and continue lowering it as the bird approaches
LOS). So far so good.
AO 91/92 have a 435 Mhz uplink,; as the satellite approaches me from AOS, I
go up in my transmit frequency.
Here is where I get lost: Why do I* lower* the frequency on 435 Mhz when
receiving a satellite, but *raise* the 435 Mhz frequency when transmitting
to a satelllite?
So, my question boils down to - why should transmit doppler shift go in the
opposite direction from receive on the same band? In both cases, the
satellites are approaching me (from AOS).
Basically, why the difference when I'm transmitting? and when I'm
receiving?
73
Philip N4HF
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Wed, 5 Jun 2019 11:55:53 -0700 (PDT)
From: 73 Bob W7LRD <w7lrd@???????.???>
To: 73 Bob W7LRD via AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] satpc32 V. 12.8d
Message-ID: <413351911.304991.1559760953325@???????.???????.???>
Content-Type: text/plain; charset=UTF-8
Had to register the copy first
73 Bob W7LRD
digitally challenged
> On June 5, 2019 at 10:23 AM 73 Bob W7LRD via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
>
> Setting up satpc32 on a new computer. Where is the "setup" button?
>
> 73 Bob W7LRD
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Wed, 5 Jun 2019 19:05:08 +0000 (UTC)
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2019-06-05
19:00 UTC
Message-ID: <565755384.473867.1559761508144@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Upcoming ARISS Contact Schedule as of 2019-06-05 19:00 UTC
Quick list of scheduled contacts and events:
Moriah Central School, Port Henry, NY, telebridge via VK6MJ
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is David St-Jacques KG5FYI (***)
Contact is go for Option #13: Thu 2019-06-06 16:54:12 UTC 71 deg
?
Watch for possible live stream at:?
https://www.youtube.com/watch?v=Nr8kPVKzU94 (***)
?
Amur State University, Blagoveshchensk, Russia, direct via TBD
The ISS callsign is presently scheduled to be RS?ISS
The scheduled astronaut is Aleksey Ovchinin
Contact is a go for Wed 2019-06-05 07:50 UTC
?
D?m d?t? a ml?de?e Olomouc (House of Children and Youth Olomouc), Olomouc,
Czech Republic, direct via OK2KWX
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Nick Hague KG5TMV
Contact is go for: Sat 2019-06-08 13:05:59 UTC 90 deg
?
Peninsula Grammar, Melbourne, Australia, telebridge via VK4KHZ
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Nick Hague KG5TMV
Contact is go for: Thu 2019-06-13 11:10:52 UTC 79 deg
?
Smithsonian Air and Space ? Udvar-Hazy, Chantilly, VA, USA, telebridge via
W6SRJ
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Nick Hague KG5TMV (***)
Contact is go for: Sat 2019-06-15 18:11:51 UTC 42 deg
?
Watch for these upcoming events:?
MAI-75 SSTV Event:? Wed 2019-06-05 12:00 UTC to 16:00 UTC
MAI-75 SSTV Event:? Thu 2019-06-06 11:30 UTC to 15:30 UTC
?
?
Note, all times?are approximate.? It is recommended that you do your own
orbital prediction?or start listening about 10 minutes before the listed
time.
All dates and?times listed follow International Standard ISO 8601 date and
time format?YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of?2019-06-05 19:00 UTC.? (***)
Here you will find a listing of all scheduled?school contacts, and
questions, other ISS related websites, IRLP and?Echolink websites, and
instructions for any contact that may be streamed?live.??
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
http://www.amsat.org/amsat/ariss/news/arissnews.txt
?
The successful school list has been updated as of 2019-05-28 21:00 UTC.
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
?
?
The ARISS webpage is at http://www.ariss.org/??
Note that there are links to other ARISS websites from this site.
The main page for Applying to Host a Scheduled Contact may be found at
http://www.ariss.org/apply-to-host-an-ariss-contact.html??
ARISS Contact Applications (United States)
?
The ARISS webpage is at http://www.ariss.org/??
Note that there are links to other ARISS websites from this site.
******************************************************************************
******************************************************************************
****************
ARISS Contact Applications (Europe, Africa and the Middle East)
?
Schools and Youth organizations in Europe, Africa and the Middle East
interested in setting up an ARISS radio contact with an astronaut on board
the International Space Station are invited to submit an application from
September to October and from February to April.
Please refer to details and the application form at
www.ariss-eu.org/school-contacts.? Applications should be addressed by email
to:? school.selection.manager@????????.???
?
ARISS Contact Applications (Canada, Central and South America, Asia and
Australia and Russia)
?
Organizations outside the United States can apply for an ARISS contact by
filling out an application.? Please direct questions to the appropriate
regional representative listed below. If your country is not specifically
listed, send your questions to the nearest ARISS Region listed. If you are
unsure which address to use, please send your question to the ARISS-Canada
representative; they will forward your question to the appropriate
coordinator.
?
For the application, go to:? http://www.ariss.org/ariss-application.html.
ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to:
ve3tbd@?????.???
ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to:
ariss@???????.???? Japan Amateur Radio League (JARL) http://www.jarl.org/ ?
ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/?
?
?
******************************************************************************
ARISS is always glad to receive listener reports for the above contacts.?
ARISS thanks everyone in advance for their assistance.? Feel free to send
your reports to aj9n@?????.??? or aj9n@???.???.
?
Listen for the ISS on the downlink of 145.8? MHz.
?
******************************************************************************
*
?
All ARISS contacts are made via the Kenwood radio unless otherwise noted.
?
******************************************************************************
*
Several?of you have sent me emails asking about the RAC ARISS website and
not being able?to get in.? That has now been changed to?
http://www.ariss.org/
Note that there are links to other ARISS websites from this?site.
****************************************************************************
Looking for something new to do?? How about receiving DATV from the ISS??
Please note that the HamTV system has been brought back to earth for
troubleshooting.? Please monitor ARISS-EU or ARISS-ON for the very latest
news on the troubleshooting efforts.?
?
If interested, then please go to the ARISS-EU website for complete details.?
Look for the buttons indicating Ham Video.????????????
http://www.ariss-eu.org/?
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight.? Contact Kerry at kbanke@?????????.???
The HamTV webpage:? https://www.amsat-on.be/hamtv-summary/
?
?
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:?
Satoshi 7M3TJZ with 135
Francesco IK?WGF with 132
Gaston ON4WF with 123
Sergey RV3DR with 116
****************************************************************************
The?webpages listed below were all reviewed for accuracy.? Out of date
webpages?were removed, and new ones have been added.? If there are additional
ARISS?websites I need to know about, please let me know.
Total number?of ARISS ISS to earth school events is 1312.
Each school counts as 1?event.
Total number of ARISS ISS to earth school contacts is 1255.
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is?47.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please?feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The?following US states and entities have never had an ARISS contact:
South Dakota, Wyoming, American?Samoa, Guam, Northern Marianas Islands, and
the Virgin Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL?information may be found at:??
http://www.ariss.org/qsl-cards.html?
ISS callsigns:? DP?ISS, IR?ISS, NA1SS, OR4ISS,?RS?ISS
****************************************************************************
Frequency? chart for packet, voice, and crossband repeater modes showing
Doppler? correction? as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Check out the Zoho reports of the ARISS?contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 58 on orbit
Oleg Konenenko
David St-Jacques KG5FYI
Anne McClain
?
Exp. 59 on orbit
Christina Koch
Aleksey Ovchinin
Nick Hague KG5TMV
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
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------------------------------
Message: 9
Date: Wed, 5 Jun 2019 19:13:36 +0000
From: "D. Craig Fox" <DFox@??????.???>
To: 'jeff griffin' <kb2m@????.???>, "'amsat-bb@?????.?????
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] 23cm antenna for L/V
Message-ID: <431ce25f5fdd42d2b01584d080add234@??????.???.???>
Content-Type: text/plain; charset="us-ascii"
Jeff, I just put up the 6' DSE2425LY a month ago and could not be more
pleased with its performance. So much more gain than my little ebay special
and I was pleasantly surprised at how wide the lobes are.
Good luck.
73s
Craig
N6RSX
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of jeff griffin via
AMSAT-BB
Sent: Tuesday, June 4, 2019 2:59 PM
To: amsat-bb@?????.???
Subject: [amsat-bb] 23cm antenna for L/V
I'm looking for a medium length Antenna for my SAT station here in NJ. As
space in limited at my winter home I went with a low gain Comet CYA-126E. I
have a bit more space here, and a more restricted sky view so I'm looking
for something around 6'+ or so with 25+ elements to help me burn through the
leaves, too many freakin trees here J. I'm looking at a 25 L Directive
Systems DSE2425LYK. I once had a 55L DSE when I had more space, no room for
that here. Before I pull the trigger on the DSE25 I was wondering if anyone
could recommend something a bit larger, but smaller then the DSE45's 12 '
boom length? Thanks in advance...
73 Jeff kb2m
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Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
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
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Not an AMSAT member? Join now to support the amateur satellite program!
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------------------------------
End of AMSAT-BB Digest, Vol 14, Issue 217
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