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CX2SA > SATDIG 06.06.19 17:43l 688 Lines 23781 Bytes #999 (0) @ WW
BID : AMSATBB14219
Read: GUEST
Subj: AMSAT-BB-digest V14 219
Path: IW8PGT<CX2SA
Sent: 190606/1538Z @:CX2SA.SAL.URY.SOAM #:7487 [Salto] FBB7.00e $:AMSATBB14219
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: SSTV (P. Suryono Adisoemarta)
2. SatPC32/IC-9700 Start Up Issue (Frank Karnauskas)
3. Re: SatPC32/IC-9700 Start Up Issue (Rick Kowalewski)
4. Re: Doppler shift question (KC9SGV)
5. Re: Doppler shift question (Roy Dean)
6. Re: Doppler shift question (skristof@???????.????
7. Re: Doppler shift question (Dave Webb KB1PVH)
8. Re: Doppler shift question (Philip Jenkins)
9. Re: Doppler shift question (Noel Petit)
10. ANS-157 AMSAT News Service Special Bulletin - AMSAT President
Awarded Russian E.T. Krenkel Medal (JoAnne K9JKM)
11. Re: Doppler shift question (k6vug@?????????.????
12. Doppler shift question (David Bartholomew)
----------------------------------------------------------------------
Message: 1
Date: Thu, 6 Jun 2019 03:18:01 +0000 (UTC)
From: "P. Suryono Adisoemarta" <yono_adisoemarta@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] SSTV
Message-ID: <1179477519.671254.1559791081234@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Here is my setup:- I use the USB audio (instead of ACC audio)
On the IC-9700:- Press MENU button then Set then Connectors (on page 2)-
Press USB AF/IF Output, then select AF as output, and set AF Output level to
50%- AF SQL is OFF (Open)
On MMSSTV software in my computer:- Select Option then Setup MMSSTV(O)-
Select Misc tab- on Device ID, you have to try all selection to find the
correct audio input
Hope that helps,
73 de Yono - YD0NXXJakarta - Indonesia
On Tuesday, June 4, 2019, 9:26:58 AM GMT+7, Jim via AMSAT-BB
<amsat-bb@?????.???> wrote:
Anyone try to decode iss sstv with the 9700?
IF so what was the set up?
Jim KI6WJ
_______________________________________________
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: 2
Date: Wed, 5 Jun 2019 23:41:55 -0500
From: "Frank Karnauskas" <n1uw@???????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] SatPC32/IC-9700 Start Up Issue
Message-ID: <000601d51c22$2b771d30$82655790$@???????.???>
Content-Type: text/plain; charset="us-ascii"
After watching Daniel, W5EKG's You Tube video, I had SatPC32 and the
IC-9700 working beautifully on the first try. (Thanks, Daniel!) The
radio frequency tracked the software real-time just like it should.
However, after playing around for a few minutes (changing satellites,
turning the main tuning knob, etc.) The radio suddenly stopped
following the frequency changes from SatPC32. The frequency
intermittently updates after 10-20 seconds accompanied by the
frequency on the radio display flashing white from MAIN to SUB for a
brief moment. Usually nothing happens until I choose another
satellite then the frequency updates once then...crickets.
Pertinent information:
Windows 10
IC-9700 Firmware 1.05
Icom Driver Version 1.30
Baud Rate: 19200 (Tried dropping it to 9600)
The AFC is turned off.
Tried rebooting the software.
Tried rebooting the computer, etc.
Any clues?
73,
Frank
FRANK KARNAUSKAS, N1UW
------------------------------
Message: 3
Date: Thu, 6 Jun 2019 13:23:54 +0800
From: Rick Kowalewski <rick@??????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] SatPC32/IC-9700 Start Up Issue
Message-ID: <351ffdbd-7a50-facc-353a-01d2c3de6b20@??????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Had that happen a few times.? No idea what causes it though.
I just reboot computer and radio.? Everything comes good.
73,
Rick VK6RK
On 6/06/2019 12:41, Frank Karnauskas via AMSAT-BB wrote:
> After watching Daniel, W5EKG's You Tube video, I had SatPC32 and the
> IC-9700 working beautifully on the first try. (Thanks, Daniel!) The
> radio frequency tracked the software real-time just like it should.
>
> However, after playing around for a few minutes (changing satellites,
> turning the main tuning knob, etc.) The radio suddenly stopped
> following the frequency changes from SatPC32. The frequency
> intermittently updates after 10-20 seconds accompanied by the
> frequency on the radio display flashing white from MAIN to SUB for a
> brief moment. Usually nothing happens until I choose another
> satellite then the frequency updates once then...crickets.
>
> Pertinent information:
>
> Windows 10
> IC-9700 Firmware 1.05
> Icom Driver Version 1.30
> Baud Rate: 19200 (Tried dropping it to 9600)
> The AFC is turned off.
> Tried rebooting the software.
> Tried rebooting the computer, etc.
>
> Any clues?
>
> 73,
> Frank
>
> FRANK KARNAUSKAS, N1UW
------------------------------
Message: 4
Date: Thu, 6 Jun 2019 07:42:51 -0500
From: KC9SGV <kc9sgv@?????.???>
To: Paul Stoetzer <n8hm@????.???>
Cc: AMSAT BB <amsat-bb@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <5ABD8E04-CEDF-415C-98A1-A931D0A80572@?????.???>
Content-Type: text/plain; charset=us-ascii
More train Doppler effect.
These are sound waves, but the RF FM principle is the same.
Not sure why they don't use AM in space, like in aviation...I.e. NO Doppler
effect.
https://youtu.be/fWX38qjECyE
KC9SGV
Sent from my iPad
> On Jun 5, 2019, at 9:39 PM, KC9SGV <kc9sgv@?????.???> wrote:
>
> A band on a train explains Doppler effect the best.
> On board the train, the sounds are normal, I.e. the frequency is constant.
>
> https://youtu.be/WgMxtT_jYf0
>
> KC9SGV
>
> Sent from my iPad
>
>> On Jun 5, 2019, at 12:54 PM, 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: 5
Date: Thu, 6 Jun 2019 09:00:36 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Doppler shift question
Message-ID:
<CADGPg2tVzH+ObLejySML93fkiLLVyRxpjWJEA4xNWYG4awO93g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
SSB is just 1/3rd of AM (one sideband, no carrier), and we still have
doppler to deal with on the linear sats.... What do you mean by this?
--Roy
K3RLD
> More train Doppler effect.
> These are sound waves, but the RF FM principle is the same.
> Not sure why they don't use AM in space, like in aviation...I.e. NO
> Doppler effect. https://youtu.be/fWX38qjECyE KC9SGV
------------------------------
Message: 6
Date: Thu, 06 Jun 2019 09:42:10 -0400
From: skristof@???????.???
To: KC9SGV <kc9sgv@?????.???>
Cc: Philip Jenkins <n4hf.philip@?????.???>, AMSAT BB
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <8a5c2a80a0c25bd720593f972a6e0ec3@???????.???>
Content-Type: text/plain; charset=US-ASCII
But AM is just amplitude modulation imposed on an electromagnetic wave.
If you've got waves, I'm pretty sure you're going to have a Doppler
effect.
Maybe aviation doesn't show much Doppler because they are going
relatively slowly (compared to spacecraft) and they operate in the VHF
realm, where Doppler is less obvious (like 2m on the satellites).
Steve AI9IN
On 2019-06-06 8:42 am, KC9SGV via AMSAT-BB wrote:
> More train Doppler effect.
> These are sound waves, but the RF FM principle is the same.
> Not sure why they don't use AM in space, like in aviation...I.e. NO
Doppler effect.
>
> https://youtu.be/fWX38qjECyE
>
> KC9SGV
>
> Sent from my iPad
------------------------------
Message: 7
Date: Thu, 6 Jun 2019 09:51:23 -0400
From: Dave Webb KB1PVH <kb1pvh@?????.???>
To: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID:
<CAEMY9FdY2ynhtcx-z6FuG_grxjHFc-NrXGMRSj_xty3cUvsQog@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I'm pretty sure the reasons for AM in aviation was because equipment was
cheap and easy to build when the aviation band was formed and if 2 stations
doubled they would both be heard.
My guess for not not having perceived doppler in aviation is because
aircraft aren't flying at 17,500mph and they are using VHF frequencies.
Feel free to contact me if I'm wrong.
Dave-KB1PVH
Sent from my Galaxy S9
On Thu, Jun 6, 2019, 8:44 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???> wrote:
> More train Doppler effect.
> These are sound waves, but the RF FM principle is the same.
> Not sure why they don't use AM in space, like in aviation...I.e. NO
> Doppler effect.
>
> https://youtu.be/fWX38qjECyE
>
> KC9SGV
>
> Sent from my iPad
>
>
------------------------------
Message: 8
Date: Wed, 5 Jun 2019 23:25:12 -0400
From: Philip Jenkins <n4hf.philip@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID:
<CAGdEbNZBECMsiw_uEryKDgA2b-eZOEyyOXmf=0B_XQ_KyjnKgg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks for all the replies, both on and off list.
I should have given my satellite background in my first email; it would
have saved some of you quite a bit of typing! :-)
I'm an AMSAT Ambassador, AMSAT-NA Life Member, and my very first satellite
QSO was on AO-13 in 1993 (but then I was inactive on the birds for 20
years) - and did learn a few things I didn't know at Hamvention's AMSAT
Academy. :-) I have given "Satellite 101" talks to about 10 clubs in the
past 2 years, have manned info tables at a few hamfests, and may tackle a
couple of hamfest forums solo during the next year.
I had hoped my question about receive versus transmit was specific enough
(since I know how to operate the birds and explain doppler when I give
presentations at clubs), but as I said, it would have been helpful to you
respondents if you had already been familiar with my background. Perhaps I
could have worded it better, and been more succinct. I'm glad that I got so
many answers - and I did get a comprehensible, clear, answer right off the
bat - and hopefully your responses will help those who just "lurk" on the
BB to understand doppler better and how to work the sats more effectively.
So thanks again to all who replied!
Philip N4HF EM85
On Wed, Jun 5, 2019 at 1:41 PM Philip Jenkins <n4hf.philip@?????.???> 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
>
------------------------------
Message: 9
Date: Thu, 6 Jun 2019 09:37:55 -0500
From: Noel Petit <petitnoel47@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <c40ecf2a-428d-ed31-9cb7-fee021014bf9@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
the other reason to stick with AM is that you can hear if other stations
are trying to break in. FM has capture and blocks all but the strongest
station. AM can superimpose multiple signals and hear if emergency calls
may be made. Additionally, in the '30's FM was nearly impossible to
generate reliably. AM doesn't depend on the transmitter's stability (to
an extent).
Noel Petit - WB0VGI
On 6/6/2019 8:51 AM, Dave Webb KB1PVH via AMSAT-BB wrote:
> I'm pretty sure the reasons for AM in aviation was because equipment was
> cheap and easy to build when the aviation band was formed and if 2 stations
> doubled they would both be heard.
>
> My guess for not not having perceived doppler in aviation is because
> aircraft aren't flying at 17,500mph and they are using VHF frequencies.
> Feel free to contact me if I'm wrong.
>
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Thu, Jun 6, 2019, 8:44 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???> wrote:
>
>> More train Doppler effect.
>> These are sound waves, but the RF FM principle is the same.
>> Not sure why they don't use AM in space, like in aviation...I.e. NO
>> Doppler effect.
>>
>> https://youtu.be/fWX38qjECyE
>>
>> KC9SGV
>>
>> Sent from my iPad
>>
>>
> _______________________________________________
> 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: 10
Date: Thu, 6 Jun 2019 10:03:11 -0500
From: JoAnne K9JKM <k9jkm@???????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] ANS-157 AMSAT News Service Special Bulletin -
AMSAT President Awarded Russian E.T. Krenkel Medal
Message-ID: <e02c1b70-669d-42db-7901-467b3bd768c7@???????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
AMSAT NEWS SERVICE SPECIAL BULLETIN
ANS-157
The AMSAT News Service bulletins are a free, weekly news and infor-
mation service of AMSAT North America, The Radio Amateur Satellite
Corporation. ANS publishes news related to Amateur Radio in Space
including reports on the activities of a worldwide group of Amateur
Radio operators who share an active interest in designing, building,
launching and communicating through analog and digital Amateur Radio
satellites.
The news feed on http://www.amsat.org publishes news of Amateur
Radio in Space as soon as our volunteers can post it.
Please send any amateur satellite news or reports to:
ans-editor at amsat.org.
You can sign up for free e-mail delivery of the AMSAT News Service
Bulletins via the ANS List; to join this list see:
http://www.amsat.org/mailman/listinfo/ans
In this edition:
* AMSAT President Awarded Russian E.T. Krenkel Medal
SB SAT @ AMSAT $ANS-157.01
ANS-157 AMSAT News Service Special Bulletin
AMSAT News Service Bulletin 157.01
From AMSAT HQ KENSINGTON, MD.
DATE June 6, 2019
To All RADIO AMATEURS
BID: $ANS-157.01
AMSAT President Awarded Russian E.T. Krenkel Medal
AMSAT President and ARRL Life Member Joe Spier, K6WAO, has been
awarded the Russian E.T. Krenkel Medal, a prestigious award granted
to individuals and organizations for outstanding global contributions
to Amateur Radio.
Joe Spier, K6WAO is a long time supporter of Amateur Radio in Space
and international cooperation. K6WAO is the President of the Radio
Amateur Satellite Corporation (AMSAT). He has also served AMSAT as
Executive Vice President, and Vice President, Educational Relations.
He is a long term supporter of Amateur Radio on the International
Space Station (ARISS) and scientific, technical, engineering, and
mathematics education. Spier is an AMSAT Life Member. He also is a
Life Member of American Radio Relay League (ARRL) and the Society
of Amateur Radio Astronomers (SARA).
The award's namesake, Ernst Teodorovich Krenkel, was a radio amateur
who, over the years, used the call signs RAEM, U3AA, and UA3AA. Born
in Poland, Krenkel was an Arctic explorer who took part in the first
Soviet "drifting station," North Pole-1. He was made a "Hero of the
Soviet Union" in 1938 for his exploits.
Krenkel's son, T.E. Krenkel, is among the four signatories to the
award certificate. The younger Krenkel, a professor at the Moscow
Technical College of Telecommunication and Informatics, said his
father was an avid radio amateur who served as the first chairman
of the Central Radio Club in the USSR.
Krenkel's image appears on postage stamps from the USSR and Russia,
and he authored a biography entitled My Callsign is RAEM. In the era
when all radio amateurs received QSL cards via Box 88, Moscow, Krenkel
was allowed to have his own postal address on his QSLs and was issued
the non-standard RAEM call sign.
Information about the Krenkel Medal can be found at:
http://krenkelmedal.org/index.php?id=49
[ANS thanks the Russian National Academy of Researches and
?Discoveries for the above information]
In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining
donors to AMSAT Project Funds, will be eligible to receive addi-
tional benefits. Application forms are available from the AMSAT
Office.
------------------------------
Message: 11
Date: Thu, 6 Jun 2019 15:30:23 +0000 (UTC)
From: "k6vug@?????????.???? <k6vug@?????????.???>
To: amsat-bb@?????.???? Noel Petit <petitnoel47@?????.???>
Subject: Re: [amsat-bb] Doppler shift question
Message-ID: <419541466.495393.1559835023764@????.?????.???>
Content-Type: text/plain; charset=UTF-8
About AM vs SSB - AM signals sound the same even if the carrier is a bit
off frequency, whereas SSB signals can become difficult to copy when
off-frequency.? Being able to copy without having to fiddle with the
controls would be important in aviation.?
?
Umesh, k6vug?
?
?
?
On Thursday, June 6, 2019, 7:38:34 AM PDT, Noel Petit via AMSAT-BB
<amsat-bb@?????.???> wrote:
the other reason to stick with AM is that you can hear if other stations
are trying to break in. FM has capture and blocks all but the strongest
station. AM can superimpose multiple signals and hear if emergency calls
may be made. Additionally, in the '30's FM was nearly impossible to
generate reliably. AM doesn't depend on the transmitter's stability (to
an extent).
Noel Petit - WB0VGI
On 6/6/2019 8:51 AM, Dave Webb KB1PVH via AMSAT-BB wrote:
> I'm pretty sure the reasons for AM in aviation was because equipment was
> cheap and easy to build when the aviation band was formed and if 2 stations
> doubled they would both be heard.
>
>? My guess for not not having perceived doppler in aviation is because
> aircraft aren't flying at 17,500mph and they are using VHF frequencies.
> Feel free to contact me if I'm wrong.
>
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Thu, Jun 6, 2019, 8:44 AM KC9SGV via AMSAT-BB <amsat-bb@?????.???> wrote:
>
>> More train Doppler effect.
>> These are sound waves, but the RF FM principle is the same.
>> Not sure why they don't use AM in space, like in aviation...I.e. NO
>> Doppler effect.
>>
>> https://youtu.be/fWX38qjECyE
>>
>> KC9SGV
>>
>> Sent from my iPad
>>
>>
> _______________________________________________
> 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: 12
Date: Thu, 6 Jun 2019 08:34:15 -0700
From: David Bartholomew <dgbartholomew@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Doppler shift question
Message-ID:
<CAMfCzcwSiMgg2+xtH8SKDZZeRYXJNS8cvgJi-unyn3WAQ3zUGA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I am composing a presentation about FM sats, hopefully to be given in a few
months at a hamfest.
How to remember which way to compensate for doppler:
Always adjust the higher frequency. For V/u or U/v sats, this means adjust
the 70cm side and leave the 2m side fixed.
Which way to move it? Very easy to remember.
If 70cm is the UPlink, you'll adjust your transmit frequency UPward through
the pass.
If 70cm is the DOWNlink, you'll adjust your receive frequency DOWNward
through the pass.
I think others have basically explained why.
Dave AD7DB
------------------------------
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!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 14, Issue 219
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