OpenBCM V1.07b12 (Linux)

Packet Radio Mailbox

IW8PGT

[Mendicino(CS)-Italy]

 Login: GUEST





  
CX2SA  > SATDIG   31.10.17 01:15l 672 Lines 22365 Bytes #999 (0) @ WW
BID : AMSATBB12279
Read: GUEST
Subj: AMSAT-BB-digest V12 279
Path: IW8PGT<CX2SA
Sent: 171030/2310Z @:CX2SA.SAL.URY.SOAM #:24841 [Salto] FBB7.00e $:AMSATBB12279
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. another new sat ?? (Bill Booth)
   2. Re: another new sat ?? (Paul Stoetzer)
   3. Special AMSAT Membership Offer for RadFxSat..download	issue
      (Jack Strother)
   4. Building a new system (Roger)
   5. Re: M2 yagi problem (W3AB/GEO)
   6. Re: Special AMSAT Membership Offer for	RadFxSat..download
      issue (Andrew Glasbrenner)
   7. Re: M2 yagi problem (Alan Biddle)
   8. RS0ISS Digipeater (Alex Weimer)
   9. Re: M2 yagi problem (Richard Lawn)
  10. Re: RS0ISS Digipeater (Scott)
  11. Re: M2 yagi problem (Paul Andrews)
  12. FO-29 transponder block diagram (Dani EA4GPZ)
  13. Re: FO-29 transponder block diagram (Robert Bruninga)
  14. Re: FO-29 transponder block diagram (Dani EA4GPZ)


----------------------------------------------------------------------

Message: 1
Date: Mon, 30 Oct 2017 08:14:07 -0400
From: Bill Booth <ve3nxk@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] another new sat ??
Message-ID: <59F7178F.7060003@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed

In this mornings Satnews there is an article on Jordan's First Satellite ?
JY1-SAT.  The article quotes "The satellite carries the name JY1-SAT to
commemorate His Majesty the Late King Hussein, for his radio call was JY1.  It
appears to be a cubestat with the ability to " communicate wirelessly with
Earth
stations around the world"

Does this wording mean another hamsat.....


--
Bill Booth VE3NXK
Sundridge ON, Canada
79.23.37 W x 45.46.18 N
FN05ns

Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html

Organ and Tissue Donation - The Gift of Life
Talk to your family.  Your decision can make a difference.


------------------------------

Message: 2
Date: Mon, 30 Oct 2017 12:30:46 +0000
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Bill Booth <ve3nxk@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] another new sat ??
Message-ID:
<CABzOSOobAB_gM5nXvpCsU7VES1FTaW+nJ0MwsQxf=h9-Vw3d=A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Yes, it will carry a FUNcube transponder. See here:
https://amsat-uk.org/2017/10/24/jordans-first-satellite-jy1-sat/

73,

Paul, N8HM

On Mon, Oct 30, 2017 at 07:22 Bill Booth <ve3nxk@xxxxx.xxx> wrote:

> In this mornings Satnews there is an article on Jordan's First Satellite ?
> JY1-SAT.  The article quotes "The satellite carries the name JY1-SAT to
> commemorate His Majesty the Late King Hussein, for his radio call was
> JY1.  It
> appears to be a cubestat with the ability to " communicate wirelessly with
> Earth
> stations around the world"
>
> Does this wording mean another hamsat.....
>
>
> --
> Bill Booth VE3NXK
> Sundridge ON, Canada
> 79.23.37 W x 45.46.18 N
> FN05ns
>
> Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html
>
> Organ and Tissue Donation - The Gift of Life
> Talk to your family.  Your decision can make a difference.
> _______________________________________________
> 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: Mon, 30 Oct 2017 09:25:14 -0400 (EDT)
From: Jack Strother <strotherbj@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Special AMSAT Membership Offer for
RadFxSat..download	issue
Message-ID: <1731988019.162271.1509369915398@xxxxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

Hi Paul,

I have already left a note to the webmaster, no reply yet.

I tried to download from the link in the receipt e-mail, and a message comes
back saying that I have no downloads available.

I have not down loaded squat, yet.

Thanks in advance, for any help on this.

I am so excited about the launch..

Jack

KD9ERA


------------------------------

Message: 4
Date: Mon, 30 Oct 2017 09:02:36 -0700
From: Roger <ai7rogerroger@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Building a new system
Message-ID:
<CAEahN0+SgHi2VyQUOvOnMf6e+Koum1oStzOAy1w9FQ1k2ryksw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

I'm in the process of assembling a new system dedicated to sats and the
like. I have a decent steerable array, quality preamps, dedicated
computers, and radio with panadapter. I'm focusing on telemetry, decoding,
and other interesting downlinks. I am literate in Satpc32 and have it
running already. I'm soliciting information or ideas that I can incorporate
that might benefit the AMSAT community, recommendations for specific
satellite software, uploads, etc.

Thanks for your time.

73, Roger
W7TZ
CN83ia
Grid Busters
w7tz.webs.com


------------------------------

Message: 5
Date: Mon, 30 Oct 2017 09:29:12 -0700
From: W3AB/GEO <w3ab@xxxxx.xxx>
To: Richard Lawn <rjlawn@xxxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] M2 yagi problem
Message-ID: <af2ac056-fe74-41d4-8b11-c10fbe0f7394@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

1 - Open it and see. It's obviously faulty now, you can't break it anymore
than it is.
2 - Contact M2. They may have repair ideas, or maybe just sell you the
driven unit assy.

?___
Sent from my two way wrist watch
73 de W3AB/GEO?

On Oct 29, 2017, 19:24, at 19:24, Richard Lawn <rjlawn@xxxxx.xxx> wrote:
>I have a problem with my 70cm cir Pol yagi. A feed line got tangled in
>the
>antenna apparently when I moved the antennas from a high angle back to
>0
>degrees. A driver element was bent and nearly pulled completely out of
>the
>insulator and matching unit. I pushed it back in through the insulator
>but
>the analyzer shows no resonance at frequency. Is it possible to open up
>the
>small matching unit box and repair such a problem or am I destined to
>buy a
>new unit from M2?
>
>73
>Rick, W2JAZ
>--
>Sent from Gmail Mobile
>_______________________________________________
>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: Mon, 30 Oct 2017 12:47:28 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "'Jack Strother'" <strotherbj@xxxxxxx.xxx>,	<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Special AMSAT Membership Offer for
RadFxSat..download	issue
Message-ID: <085101d3519e$c57702b0$50650810$@xxxxxxxxxx.xxx>
Content-Type: text/plain;	charset="us-ascii"

I emailed it to your Comcast email, as well as your Paypal email...sorry you
had a problem downloading it, and thanks for joining.

73, Drew KO4MA

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Jack
Strother
Sent: Monday, October 30, 2017 9:25 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Special AMSAT Membership Offer for RadFxSat..download
issue

Hi Paul,

I have already left a note to the webmaster, no reply yet.

I tried to download from the link in the receipt e-mail, and a message comes
back saying that I have no downloads available.

I have not down loaded squat, yet.

Thanks in advance, for any help on this.

I am so excited about the launch..

Jack

KD9ERA
_______________________________________________
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: 7
Date: Mon, 30 Oct 2017 11:55:38 -0500
From: Alan Biddle <wa4sca@xxxxx.xxx>
To: Richard Lawn <rjlawn@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] M2 yagi problem
Message-ID:
<CAFS0bqmLaj6g9yJc_eNaVjjsiH2gT_E+X6QLegPGvgdynn7M+w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Cracked it open and look.  Nothing fancy inside.  Just a relay and
connecting wires.  Sounds like one is broken.

73s
Alan
WA4SCA


On Oct 29, 2017 9:23 PM, "Richard Lawn" <rjlawn@xxxxx.xxx> wrote:

> I have a problem with my 70cm cir Pol yagi. A feed line got tangled in the
> antenna apparently when I moved the antennas from a high angle back to 0
> degrees. A driver element was bent and nearly pulled completely out of the
> insulator and matching unit. I pushed it back in through the insulator but
> the analyzer shows no resonance at frequency. Is it possible to open up the
> small matching unit box and repair such a problem or am I destined to buy a
> new unit from M2?
>
> 73
> Rick, W2JAZ
> --
> Sent from Gmail Mobile
> _______________________________________________
> 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: 8
Date: Mon, 30 Oct 2017 15:56:11 +0000 (UTC)
From: Alex Weimer <kc7mg@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] RS0ISS Digipeater
Message-ID: <1317495283.6888628.1509378971899@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

 Thanks for the info on others also having problems with the ISS packet
digipeater. Thanks to K4KDR and KG4AKV. this confirms that I am not the only
one experiencing problems. I also noticed that once the sat is no longer
approaching that I cannot get into the digipeater and have trouble hearing
it ..Evidently it seems to be the ISS antenna is?no longer accessible from
my location ???Thought it was just Me !!!? 73? JACK-KC7MG

------------------------------

Message: 9
Date: Mon, 30 Oct 2017 18:02:17 +0000
From: Richard Lawn <rjlawn@xxxxx.xxx>
To: Alan Biddle <wa4sca@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] M2 yagi problem
Message-ID:
<CADQmrTHn1YahS_VdqB0--h2vDrr8Z+4jtsLRsY1b9vh0HZbPaQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

I'll try and open it up later today or tomorrow.

On Mon, Oct 30, 2017 at 12:55 PM Alan Biddle <wa4sca@xxxxx.xxx> wrote:

> Cracked it open and look.  Nothing fancy inside.  Just a relay and
> connecting wires.  Sounds like one is broken.
>
> 73s
> Alan
> WA4SCA
>
>
> On Oct 29, 2017 9:23 PM, "Richard Lawn" <rjlawn@xxxxx.xxx> wrote:
>
>> I have a problem with my 70cm cir Pol yagi. A feed line got tangled in the
>> antenna apparently when I moved the antennas from a high angle back to 0
>> degrees. A driver element was bent and nearly pulled completely out of the
>> insulator and matching unit. I pushed it back in through the insulator but
>> the analyzer shows no resonance at frequency. Is it possible to open up
>> the
>> small matching unit box and repair such a problem or am I destined to buy
>> a
>> new unit from M2?
>>
>> 73
>> Rick, W2JAZ
>> --
>> Sent from Gmail Mobile
>>
> _______________________________________________
>> 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 from Gmail Mobile


------------------------------

Message: 10
Date: Mon, 30 Oct 2017 14:37:46 -0400
From: Scott <scott23192@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] RS0ISS Digipeater
Message-ID:
<CAJCSnOaBgpxDmBFDUQ+c+GYbNzzHZ4Jt-06kCRa4w1x=nFURWQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Glad to help, Jack.

Not to state the obvious, but just in case anyone on the list is just
getting started, be sure to keep an eye on:

http://www.ariss.net/

... to be aware of how long it's been since ANYONE has been digipeated &
picked up by an iGate.  I had a direct overhead pass today but heard
nothing.  It was very helpful to have ariss.net to let me know that it
wasn't a problem on my end (THIS time!), but instead that apparently the
digipeater is not currently turned on.

-Scott,  K4KDR


============================

On Mon, Oct 30, 2017 at 11:56 AM, Alex Weimer via AMSAT-BB <
amsat-bb@xxxxx.xxx> wrote:

>  Thanks for the info on others also having problems with the ISS packet
> digipeater. Thanks to K4KDR and KG4AKV. this confirms that I am not the
> only one experiencing problems. I also noticed that once the sat is no
> longer approaching that I cannot get into the digipeater and have trouble
> hearing it ..Evidently it seems to be the ISS antenna is no longer
> accessible from my location ?? Thought it was just Me !!!  73  JACK-KC7MG


------------------------------

Message: 11
Date: Mon, 30 Oct 2017 15:08:35 -0400
From: Paul Andrews <w2hro.fn20@xxxxx.xxx>
To: Richard Lawn <rjlawn@xxxxx.xxx>
Cc: Alan Biddle <wa4sca@xxxxx.xxx>, AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] M2 yagi problem
Message-ID:
<CAOsf+NT2Y9EBZhFfWjZzc2WbTi7Y6DwM6Fo4+0U8jWcj1Yo8vg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Richard,

What is broken?   The feed block or the splitter used to generate the
CP wavefront?

Can you send me a picture of the broken item?

73 - Paul - W2HRO


On Mon, Oct 30, 2017 at 2:02 PM, Richard Lawn <rjlawn@xxxxx.xxx> wrote:
> I'll try and open it up later today or tomorrow.
>
> On Mon, Oct 30, 2017 at 12:55 PM Alan Biddle <wa4sca@xxxxx.xxx> wrote:
>
>> Cracked it open and look.  Nothing fancy inside.  Just a relay and
>> connecting wires.  Sounds like one is broken.
>>
>> 73s
>> Alan
>> WA4SCA
>>
>>
>> On Oct 29, 2017 9:23 PM, "Richard Lawn" <rjlawn@xxxxx.xxx> wrote:
>>
>>> I have a problem with my 70cm cir Pol yagi. A feed line got tangled in the
>>> antenna apparently when I moved the antennas from a high angle back to 0
>>> degrees. A driver element was bent and nearly pulled completely out of the
>>> insulator and matching unit. I pushed it back in through the insulator but
>>> the analyzer shows no resonance at frequency. Is it possible to open up
>>> the
>>> small matching unit box and repair such a problem or am I destined to buy
>>> a
>>> new unit from M2?
>>>
>>> 73
>>> Rick, W2JAZ
>>> --
>>> Sent from Gmail Mobile
>>>
>> _______________________________________________
>>> 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 from Gmail Mobile
> _______________________________________________
> 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: 12
Date: Mon, 30 Oct 2017 22:53:15 +0100
From: Dani EA4GPZ <daniel@xxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FO-29 transponder block diagram
Message-ID: <2e0bd994-f7b8-8f1e-8313-8a7c0822afff@xxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8

Hi all,

A few days ago I have transmitted and recorded a (low-power) FT8 signal
through the FO-29 linear transponder to test some Doppler correction
algorithms I'm developing (see
http://destevez.net/2017/10/wsjt-x-and-linear-satellites-part-ii/)

After Doppler correction, I'm left with a linear frequency drift both in
my downlink signal and in the satellite CW beacon. However, the drift
rate of my signal and the beacon are different. Specifically, my signal
drifts 1.26 times faster than the beacon. I suspect that this drift is
due to one of the local oscillators in FO-29.

To understand this better, I need to look at a block diagram of the
FO-29 linear transponder. The best I've found is this:

http://www.jarl.org/English/5_Fuji/systeme.gif

However, I need something similar to this:

https://funcubetest2.files.wordpress.com/2010/11/funcube_rf_board_block_diagra
mv2-1_pa3weg_open-1.pdf

Since I need to see the frequencies of all the local oscillators
involved in the transponder and CW beacon.

Is there a more detailed block diagram for FO-29 or does anyone know
something about this information?

73,

Dani EA4GPZ.


------------------------------

Message: 13
Date: Mon, 30 Oct 2017 18:23:57 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Dani EA4GPZ <daniel@xxxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FO-29 transponder block diagram
Message-ID: <3696608662b7ca087c0d11946e3bcdb6@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Im not following this closely, but the transponder I think is inverting.
Thus the uplink dopper is subtracted from the downlink dopper whereas the
beacon on the satellite is impacted by the full dopper of the speed of the
spacecraft.  So they will not be the same.  Do the math and see if that
comes out to the 1.26  you observed.

Bob, WB4APR


-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Dani
EA4GPZ
Sent: Monday, October 30, 2017 5:53 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] FO-29 transponder block diagram

Hi all,

A few days ago I have transmitted and recorded a (low-power) FT8 signal
through the FO-29 linear transponder to test some Doppler correction
algorithms I'm developing (see
http://destevez.net/2017/10/wsjt-x-and-linear-satellites-part-ii/)

After Doppler correction, I'm left with a linear frequency drift both in
my downlink signal and in the satellite CW beacon. However, the drift rate
of my signal and the beacon are different. Specifically, my signal drifts
1.26 times faster than the beacon. I suspect that this drift is due to one
of the local oscillators in FO-29.

To understand this better, I need to look at a block diagram of the
FO-29 linear transponder. The best I've found is this:

http://www.jarl.org/English/5_Fuji/systeme.gif

However, I need something similar to this:

https://funcubetest2.files.wordpress.com/2010/11/funcube_rf_board_block_di
agramv2-1_pa3weg_open-1.pdf

Since I need to see the frequencies of all the local oscillators involved
in the transponder and CW beacon.

Is there a more detailed block diagram for FO-29 or does anyone know
something about this information?

73,

Dani EA4GPZ.
_______________________________________________
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: 14
Date: Tue, 31 Oct 2017 00:00:37 +0100
From: Dani EA4GPZ <daniel@xxxxxxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] FO-29 transponder block diagram
Message-ID: <2e1acbd0-520c-1e59-fd00-d93800c65c35@xxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8

El 30/10/17 a las 23:23, Robert Bruninga escribi?:
> Im not following this closely, but the transponder I think is inverting.
> Thus the uplink dopper is subtracted from the downlink dopper whereas the
> beacon on the satellite is impacted by the full dopper of the speed of the
> spacecraft.  So they will not be the same.  Do the math and see if that
> comes out to the 1.26  you observed.

Hi Bob,

I'm not looking for a Doppler effect here. I've already corrected for
that using the TLEs. It's the local oscillator drift in FO-29 that I'm
trying to study.

However, I've done some math that matches my observed 1.26 within 5%
error. The transponder is indeed inverting, with uplink on 145.95MHz and
downlink on 435.85MHz. Assuming that the IF frequency f is below
145.95MHz (a 10.7MHz or 70MHz IF would be typical), there are two
possibilities:

a) The first LO runs at 145.95 - f and the second LO runs at 435.85 + f
b) The first LO runs at 145.95 + f and the second LO runs at 435.85 - f

In both cases, the total frequency shift through the linear transponder
is 145.95 + 435.85. Assuming that both LOs are derived from the same
oscillator (or that otherwise drift similarly), then the drift in the
transponder would be proportional to 145.95 + 435.85, whereas the drift
in the beacon would be proportional to 435.85. Now the quotient

(145.95 + 435.85)/435.85 = 1.33

matches the 1.26 I've measured within 5% error.

So for me this explains completely the effect I'm seeing, but it would
be good to confirm it with the block diagram.

73,

Dani.


------------------------------

Subject: Digest Footer

_______________________________________________
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb

------------------------------

End of AMSAT-BB Digest, Vol 12, Issue 279
*****************************************


Read previous mail | Read next mail


 12.05.2024 05:27:45lGo back Go up