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CX2SA > SATDIG 07.02.19 03:16l 600 Lines 22238 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Operating SSB sats (jim@?????.????
2. Re: Operating SSB sats (Ronald G. Parsons)
3. Re: Operating SSB sats (Adrian Engele)
4. Re: Operating SSB sats (k6vug@?????????.????
5. 4 cubesats deployed from ISS; Cat1,Delphini,UNITE,TECHEDSAT-8
(christy hunter)
6. Re: Operating SSB sats (Ryan Noguchi)
7. Re: Operating SSB sats (Ryan Noguchi)
8. ROVE - DM 15/25/16/26/17/18/27/28/38/37/36 Feb 8-10th
(KI7UNJ Tucker)
9. Re: Operating SSB sats (jim@?????.????
10. Re: Operating SSB sats (Ryan Noguchi)
11. Re: Fw: I'm curious (Jerry Buxton)
----------------------------------------------------------------------
Message: 1
Date: Wed, 6 Feb 2019 11:35:25 -0800 (PST)
From: "jim@?????.???? <jim@?????.???>
To: "AMSAT BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1549481725.112622379@????.?????????.???>
Content-Type: text/plain;charset=UTF-8
The thing to keep in mind is that there are lots of out there that are not
capable of operating fully computer controlled because of equipment
limitations. Although it's been a few years since I've been on the birds, I
used an early Yaesu 736 which has one way CAT control. Although
theoretically possible to completely contgrol frequency with a PC that way,
it is such a pain in the ass to dial around a passband looking for contacts
from the computer as compared to grabbing the VFO knob on the radio. I
usedd teh computer to control the antennas but not the VFO.
73
-----
Jim Walls - K6CCC
jim@?????.???
------------------------------
Message: 2
Date: Wed, 6 Feb 2019 13:43:05 -0600
From: "Ronald G. Parsons" <w5rkn@?????.???>
To: "AMSAT-BB" <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1AB2F3AEA88940D5809FAAF716A897C3@?????????>
Content-Type: text/plain; charset="iso-8859-1"
One reason for some drifting, even with computer control. is not using
up-to-date keps.
Another is inaccurate time on one or both computers.
But always be patient to those standing outside in rain or snow, and be
patient with them.
And always have fun.
Ron W5RKN
------------------------------
Message: 3
Date: Wed, 6 Feb 2019 20:00:22 +0000 (UTC)
From: Adrian Engele <aa5uk@?????.???>
To: AMSAT BB <amsat-bb@?????.???>, "k6vug@?????????.????
<k6vug@?????????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1937309438.4173934.1549483222366@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Umesh,
One other thing to consider that I have not heard anybody mention so far,?
most rovers will be using either a fixed uplink or a fix downlink? depending
on the satellite and correct for the higher frequency manually per the "One
True Rule".? Many rovers pre-announce their frequencies. In SatPC you can go
to the Mode menu and set which frequency you want Doppler corrected the
uplink or the downlink only, instead of both.
As a roving operator there is often a challenge. I typically announce my
fixed frequency via Twitter or AMSAT BB and find myself chasing operators
who are running full doppler correction during TCA. Then I have to fiddle to
get back on frequency.?? Just something to think about to make life easier
for the rovers working the pile ups while minimizing the need to retune and
maintain a high response rate.
As was previously mentioned use the RIT too.
73, Adrian AA5UK?? >> VP5/AA5UK? Feb 28-March 8
On Wednesday, February 6, 2019, 11:43:44 AM CST, k6vug@?????????.???
<k6vug@?????????.???> wrote:
Good Morning All,
I'd like to understand something that seems to be happening with SSB birds.?
I realize that they are two kinds of operators - one that has a computer
controlled station and one that tunes manually, and I respect both types.?
The following observation is about two computer controlled stations working
via a SSB satellite -?
?
(a) My station is computer controlled (SatPC32 or HRD) and can hear myself
on the downlink throughout the pass.? I can also go up or down the pass band
and still hear myself without needing to retune the uplink.?? It is pretty
rock solid, almost like HF operation.?
?
(b) Sometimes I hear a station calling CQ and it remains on the same
frequency during successive CQs, so I'm guessing their station is also
computer controlled.? I can tune in and stay on their calling frequency.?
?
(c) However, when I can respond, it seems they have to tune their downlink a
bit to hear me well.? So when they come back to my response, they are a bit
off-frequency (about 300Hz) and sound like Mickey Mouse, until I retune the
downlink to hear them well again.? This keeps happening throughout the QSO.?
?
(d) This "drifting" happens only with some stations calling CQ and not
everyone.
?
Considering both stations are computer controlled at each end, I'm trying to
understand if I'm doing anything wrong/incorrect.? Learning to operate SSB
sats has been humbling as well as exciting, I'd appreciate any pointers for
this situation. Thanks in advance.?
?
?
73!?
Umesh?
k6vug?
_______________________________________________
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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Wed, 6 Feb 2019 20:25:23 +0000 (UTC)
From: "k6vug@?????????.???? <k6vug@?????????.???>
To: AMSAT BB <amsat-bb@?????.???>, "jim@?????.???? <jim@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <925789780.4207857.1549484723245@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hello Jim,
I'm sure you know that in a more sophisticated setup one can click directly
on the image of a received signal on a Pan Adapter display - no more tuning
dials.? Unfortunately I do not currently have such a? feature in my setup,
although I'd like that.?
?
The next best thing was to do all the tuning via the software like the
SatPC32 or HRD. In both cases, I have been able to work out the kinks and am
able to avoid touching the radio almost completely.?? In fact HRD provides a
much richer CAT control functionality.? In most cases, it remains to be
one-way control but it helps !?
?
73!
Umesh
k6vug
On Wednesday, February 6, 2019, 11:37:55 AM PST, jim@?????.???
<jim@?????.???> wrote:
The thing to keep in mind is that there are lots of out there that are not
capable of operating fully computer controlled because of equipment
limitations.? Although it's been a few years since I've been on the birds, I
used an early Yaesu 736 which has one way CAT control.? Although
theoretically possible to completely contgrol frequency with a PC that way,
it is such a pain in the ass to dial around a passband looking for contacts
from the computer as compared to grabbing the VFO knob on the radio.? I
usedd teh computer to control the antennas but not the VFO.
73
-----
Jim Walls - K6CCC
jim@?????.???
_______________________________________________
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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Wed, 6 Feb 2019 12:53:15 -0800
From: christy hunter <cchunter3@??????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] 4 cubesats deployed from ISS;
Cat1,Delphini,UNITE,TECHEDSAT-8
Message-ID: <2dcd988b-1a3d-fcf3-3421-39f827a23e0d@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I just saw this announced by Nanoracks; someone earlier on this BBS was
asking about a TECHEDSAT-8 cubesat.
http://nanoracks.com/nanoracks-completes-15th-cubesat-mission-on-international
-space-station/
four cubesats released: Assume it was done on January 31 2019?
The satellites deployed and their timestamps were:
*CAT-1/CAT-2:* 10:25 GMT/4:25 CST
*Delphini-1:* 12:00 GMT/6:00 CST
*UNITE:* 13:40 GMT/7:40 CST
*TechEdSat-8:* 16:45 GMT/10:45 CST
TechEdSat-8, and Unite are listed on Nasa's ELaNa site;
https://www.nasa.gov/content/upcoming-elana-cubesat-launches
and only Delphini-1 is listed as being coordinated(that I could find) ;?
http://www.amsat.org.uk/iaru/
per the IARU site Delphini-1:
Supporting Organisation ?? ?Aarhus University ? Department of Engineering
Contact Person ?? ?nh@???.??.??.??????
Headline Details: The Delphini-1 mission is a 1U CubeSat and is an
educational and amateur radio mission with the purpose of teaching
students and academic staff how to operate a nanosatellite in space, its
electronics and all aspects of physics involved in space. Proposing a
UHF downlink using9k6 GMSK. Planning a Nanoracks deployment from the ISS
in October 2018. More details are available at
http://projects.au.dk/ausat/delphini1/ **A downlink on 437.500 MHz has
been coordinated**
Application Date: ?? ?06 Jan 2018 ?? ? ??? ?Freq coordination completed
on ?? ?25 Jan 2018
73
Christy KB6LTY
------------------------------
Message: 6
Date: Wed, 6 Feb 2019 21:04:46 +0000 (UTC)
From: Ryan Noguchi <ai6do@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1529149905.4229360.1549487086953@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Shouldn't the CQing station stay put, not try to chase an off-frequency
caller, to prevent both stations from chasing each other around?
73, Ryan AI6DO
On Wednesday, February 6, 2019, 12:02:49 PM PST, Adrian Engele via
AMSAT-BB <amsat-bb@?????.???> wrote:
...
As a roving operator there is often a challenge. I typically announce my
fixed frequency via Twitter or AMSAT BB and find myself chasing operators
who are running full doppler correction during TCA. Then I have to fiddle to
get back on frequency.?? Just something to think about to make life easier
for the rovers working the pile ups while minimizing the need to retune and
maintain a high response rate.
...
73, Adrian AA5UK?? >> VP5/AA5UK? Feb 28-March 8
------------------------------
Message: 7
Date: Wed, 6 Feb 2019 21:27:23 +0000 (UTC)
From: Ryan Noguchi <ai6do@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1512403319.4230054.1549488443081@????.?????.???>
Content-Type: text/plain; charset=UTF-8
I do the opposite. I find it's a lot less of a pain to manually control an
azimuth-only rotator than to have to manually tune both VFOs to correct for
Doppler and hunt for signals. Having a panadapter display of the downlink
passband is incredibly helpful at avoiding the need for the latter. By
twirling the mouse wheel, I can control the VFO (with automatic
reverse-tracking) at various tuning speeds based on which digit of the Rx
frequency in the HDSDR application the mouse pointer is on:? 100Hz, 1kHz,
10kHz etc or just click on the signal in the waterfall display.?
73, Ryan AI6DO
On Wednesday, February 6, 2019, 11:38:58 AM PST, jim@?????.???
<jim@?????.???> wrote:
The thing to keep in mind is that there are lots of out there that are not
capable of operating fully computer controlled because of equipment
limitations.? Although it's been a few years since I've been on the birds, I
used an early Yaesu 736 which has one way CAT control.? Although
theoretically possible to completely contgrol frequency with a PC that way,
it is such a pain in the ass to dial around a passband looking for contacts
from the computer as compared to grabbing the VFO knob on the radio.? I
usedd teh computer to control the antennas but not the VFO.
73
-----
Jim Walls - K6CCC
jim@?????.???
------------------------------
Message: 8
Date: Wed, 6 Feb 2019 13:48:04 -0800
From: KI7UNJ Tucker <ki7unj@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ROVE - DM 15/25/16/26/17/18/27/28/38/37/36 Feb
8-10th
Message-ID:
<CAPFr_Ukn6AuhVPK9KkRK1yKM4t+Cm3KFHaVCccsPua_nbrPH_g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Myself (KI7UNJ) and KI5BEX will be roving this weekend and will be
activating DM 15/25/16/26/17/18/27/28/38/37/36 on FM Satellites only.
For a complete list of passes and to keep updated as we go along visit:
https://twitter.com/KI7UNJ
QRZ also has the list of passes but will not be updated while roving:
https://www.qrz.com/db/ki7unj
Hope to work you all this weekend.
--
KI7UNJ
https://twitter.com/KI7UNJ
https://www.qrz.com/db/KI7UNJ
http://bit.do/ki7unj
<https://www.google.com/url?q=http://bit.do/ki7unj&sa=D&source=hangouts&ust=15
21073499558000&usg=AFQjCNFcQLn6C9nmmvpQiBbD6XvN-QjKug>
------------------------------
Message: 9
Date: Wed, 6 Feb 2019 14:12:34 -0800 (PST)
From: "jim@?????.???? <jim@?????.???>
To: "AMSAT BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <1549491154.789110617@????.?????????.???>
Content-Type: text/plain;charset=UTF-8
Part of my difference is technology at the time and what was being used.
First of all, I was using El & Az tracking and have 40 elements on UHF, 22
on VHF, and a 2 x 3 foot dish for 2.4 GHz, so tracking was fairly critical.
The software was moving the antennas every few seconds on LEO passes.
Second, apparently the software has improved. What I was using had no mouse
scrolling. All there was was an up button and a down button that stepped in
something like 10 (or maybe it was 100) Hz steps (non-selectable). That
meant to move across the passband required hundreds or thousands of button
clicks. You could also type in a specific frequency. It was horrible.
Used it about three times and decided that I would never use it ever again.
Now, I will point out that if the radio had two way CAT control, you could
spin the knob on the radio and it would read the change from the radio - but
alas, the early Yaesu 7356 radios did not have two way CAT control. The
manual largely assumed
that you would normally operate by spinning the knob on the radio and only
use the up / down buttons for fine tuning.
Personally I never had any trouble manually tuning the radio.
Jim Walls - K6CCC
jim@?????.???
-----Original Message-----
From: "Ryan Noguchi via AMSAT-BB" <amsat-bb@?????.???>
Sent: Wednesday, February 6, 2019 13:27
To: "AMSAT BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
I do the opposite. I find it's a lot less of a pain to manually control an
azimuth-only rotator than to have to manually tune both VFOs to correct for
Doppler and hunt for signals. Having a panadapter display of the downlink
passband is incredibly helpful at avoiding the need for the latter. By
twirling the mouse wheel, I can control the VFO (with automatic
reverse-tracking) at various tuning speeds based on which digit of the Rx
frequency in the HDSDR application the mouse pointer is on:? 100Hz, 1kHz,
10kHz etc or just click on the signal in the waterfall display.?
73, Ryan AI6DO
On Wednesday, February 6, 2019, 11:38:58 AM PST, jim@?????.???
<jim@?????.???> wrote:
The thing to keep in mind is that there are lots of out there that are not
capable of operating fully computer controlled because of equipment
limitations.? Although it's been a few years since I've been on the birds, I
used an early Yaesu 736 which has one way CAT control.? Although
theoretically possible to completely contgrol frequency with a PC that way,
it is such a pain in the ass to dial around a passband looking for contacts
from the computer as compared to grabbing the VFO knob on the radio.? I
usedd teh computer to control the antennas but not the VFO.
73
-----
Jim Walls - K6CCC
jim@?????.???
_______________________________________________
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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Wed, 6 Feb 2019 22:28:42 +0000 (UTC)
From: Ryan Noguchi <ai6do@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
Message-ID: <632929391.4269316.1549492122753@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Agreed, I can certainly see how that setup would make computer control of
the VFO or manual antenna control painful. The Elk I'm using is definitely
more amenable to a laid-back approach to antenna rotation.?
73, Ryan AI6DO
On Wednesday, February 6, 2019, 2:14:14 PM PST, jim@?????.???
<jim@?????.???> wrote:
Part of my difference is technology at the time and what was being used.?
First of all, I? was using El & Az tracking and have 40 elements on UHF, 22
on VHF, and a 2 x 3 foot dish for 2.4 GHz, so tracking was fairly critical.?
The software was moving the antennas every few seconds on LEO passes.?
Second, apparently the software has improved.? What I was using had no mouse
scrolling.? All there was was an up button and a down button that stepped in
something like 10 (or maybe it was 100) Hz steps (non-selectable).? That
meant to move across the passband required hundreds or thousands of button
clicks.? You could also type in a specific frequency.? It was horrible.?
Used it about three times and decided that I would never use it ever again.?
Now, I will point out that if the radio had two way CAT control, you could
spin the knob on the radio and it would read the change from the radio - but
alas, the early Yaesu 7356 radios did not have two way CAT control.? The
manual largely assumed
that you would normally operate by spinning the knob on the radio and only
use the up / down buttons for fine tuning.
Personally I never had any trouble manually tuning the radio.
Jim Walls - K6CCC
jim@?????.???
-----Original Message-----
From: "Ryan Noguchi via AMSAT-BB" <amsat-bb@?????.???>
Sent: Wednesday, February 6, 2019 13:27
To: "AMSAT BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Operating SSB sats
I do the opposite. I find it's a lot less of a pain to manually control an
azimuth-only rotator than to have to manually tune both VFOs to correct for
Doppler and hunt for signals. Having a panadapter display of the downlink
passband is incredibly helpful at avoiding the need for the latter. By
twirling the mouse wheel, I can control the VFO (with automatic
reverse-tracking) at various tuning speeds based on which digit of the Rx
frequency in the HDSDR application the mouse pointer is on:? 100Hz, 1kHz,
10kHz etc or just click on the signal in the waterfall display.?
73, Ryan AI6DO
? ? On Wednesday, February 6, 2019, 11:38:58 AM PST, jim@?????.???
<jim@?????.???> wrote:?
The thing to keep in mind is that there are lots of out there that are not
capable of operating fully computer controlled because of equipment
limitations.? Although it's been a few years since I've been on the birds, I
used an early Yaesu 736 which has one way CAT control.? Although
theoretically possible to completely contgrol frequency with a PC that way,
it is such a pain in the ass to dial around a passband looking for contacts
from the computer as compared to grabbing the VFO knob on the radio.? I
usedd teh computer to control the antennas but not the VFO.
73
-----
Jim Walls - K6CCC
jim@?????.???
??
------------------------------
Message: 11
Date: Wed, 6 Feb 2019 19:08:00 -0600
From: Jerry Buxton <n0jy@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Fw: I'm curious
Message-ID: <70fa07d5-64f6-2582-0c29-f4f7332ab405@?????.???>
Content-Type: text/plain; charset=utf-8
And believe me, Drew had a hard time demonstrating that to NOAA when
they audited him because the light in the room kept going on and off
too, so the guy couldn't keep notes in the dark and had to have him
repeat...
Jerry Buxton, N?JY
On 2/4/2019 19:44, Mark L. Hammond wrote:
> Full specs on command station hardware and communications protocol can be
found here:
>
>
https://www.walgreens.com/store/c/the-clapper-sound-activated-on/off-switch/ID
=prod6008505-product
>
> Mark N8MH
>
> At 01:23 PM 2/4/2019 -0600, Adam Whitney via AMSAT-BB wrote:
>> Careful, Roy. I think you just disclosed the master combo on all those
little TSA-approved luggage locks too.
>>
>> -Adam, K0FFY
>>
>>
>>> On Feb 4, 2019, at 12:44 PM, Roy Dean <royldean@?????.???> wrote:
>>>
>>>> I have also been told, and if I remember correctly, due to ITAR, at
>>>> least for the Fox birds, information cannot be shared about their
>>>> command functionality
>>>
>>> Since I'm already on the Fed's "watch list", it won't hurt to let
everybody
>>> know....
>>>
>>> The command sequence is:
>>>
>>> 1 - 2 - 3 - 4 - 5
>>>
>>> Coincidentally, it will also open the Druidia atmospheric dome port....
>>>
>>> --Roy
>>> K3RLD
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
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
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 14, Issue 45
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