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CX2SA > SATDIG 03.08.15 22:03l 831 Lines 30446 Bytes #999 (0) @ WW
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Sent: 150803/1954Z @:CX2SA.SAL.URY.SOAM #:25063 [Salto] FBB7.00e $:AMSATBB10229
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Why too much uplink power is bad/eggbeater antennas
onxmit (George Henry)
2. Re: Why too much uplink power is bad/eggbeater antennas on
xmit (David W0DHB)
3. Re: ARISS APRS MIA? (transbets@xxxxx.xxxx
4. Re: ARISS APRS MIA? (Mvivona)
5. Re: Why too much uplink power is bad/eggbeater antennas on
xmit (David)
6. W5PFG/P contacts from NM & CO grids (Clayton Coleman)
7. Re: Why too much uplink power is bad/eggbeater antennas on
xmit (James Duffey)
8. cn76 fo29 (Bob- W7LRD)
9. AO-27 Turned On? (Nicholas Mahr KE8AKW)
10. so50 cn76 (Bob- W7LRD)
11. AO83, 84 orbit (Bob)
12. Re: AO83, 84 orbit (Mike Rupprecht)
13. Re: AO83, 84 orbit (Joe Fitzgerald)
----------------------------------------------------------------------
Message: 1
Date: Sun, 2 Aug 2015 23:10:40 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
To: "Philip Jenkins" <n4hf.philip@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Why too much uplink power is bad/eggbeater
antennas onxmit
Message-ID: <92B62CDCBD884C96BB7CBACB03443313@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I sometimes use an eggbeater for the uplink, and do just fine at 25 watts.
George, KA3HSW
----- Original Message -----
From: "Philip Jenkins" <n4hf.philip@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Sunday, August 02, 2015 6:53 PM
Subject: [amsat-bb] Why too much uplink power is bad/eggbeater antennas
onxmit
> The discussion on uplink power fits right in with a conversation I had
> last
> weekend...
>
> While I was not wearing my AMSAT badge at a hamfest on July 25, a married
> couple - both hams, both fairly recently licensed - recognized me from a
> previous hamfest when I was wearing that badge. Their question for me was
> to why they could hear (a) satellite(s), but no one could hear them...
>
> The satellite in question is SO-50 (and I did take a few minutes
> explaining
> the difference between linear birds and FM-only ones).
>
> Before the OM joined us, his YL told me that her husband doesn't want to
> use antennas like the Elk or Arrow, even on a tripod. I then suggested to
> her that he consider a fixed elevation mount, so as to only have to track
> the azimuth.
>
> Then the OM showed up. He doesn't even want to consider the
> fixed-elevation, because he'd still have to track . I suggested he leave
> the tracking to a computer...still not acceptable
>
> He then explained that they spend a lot of time in a motorhome. For his
> antennas now, he is using eggbeaters. On the 440 receive side, he is
> thankfully using a pre-amp, so he can hear adequately,
>
> For the transmit, he is using 50 watts into an eggbeater, and still can't
> be heard on the satellite. He told me one recommendation he was given was
> to increase the xmit power to 150 watts (*I visibly shuddered*) so as to
> overcome the non-directionality of the eggbeater. (And I explained why too
> much uplink power is bad for both FM and linear sats, in terms of
> bandwidth
> and power consumption on the satellite.)
>
> On further questioning, he knew about the PL tone to turn-on SO-50, but
> didn't know about the different PL to actually access the satellite on
> each
> transmission. I explained to him that it is like terrestrial repeaters; no
> matter how much power you run, the repeater won't "hear" you unless you
> transmit the PL every time.
>
> In a follow-up email the next day, I passed on the SO-50 operating guide
> (PDF) from the AMSAT website, and advised him to try programming his radio
> with the proper PL and frequencies for adjacent memories BEFORE consdering
> increasing transmit power.
>
> I really think his problem is not using PLs, rather than inadequate power
> levels on an omni antenna.
>
> My question is two-fold (I still need to follow-up with him). 1) For those
> of you successfully using eggbeaters for the uplink (and he is adamant
> about not using a yagi, despite my advice that the performance will suffer
> quite a bit with eggbeaters), what output power do you typically use? I
> think 50 watts into an eggbeater is probably still too much power,
> considering 5 watts into an Arrow is usually enough for successful
> communications.
>
> 2) I know that various power levels are suggested for various gain
> antennas, but I'm wondering what the suggested EIRP is for successful -
> not
> ones which would hog the satellite - uplinks.
>
> Philip N4HF
> _______________________________________________
> 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
---
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------------------------------
Message: 2
Date: Sun, 2 Aug 2015 22:25:12 -0600
From: "David W0DHB" <dave@xxxxx.xxx>
To: "'Philip Jenkins'" <n4hf.philip@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Why too much uplink power is bad/eggbeater
antennas on xmit
Message-ID: <008e01d0cda4$63c463d0$2b4d2b70$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
I used eggbeaters and on SO-50 , 15 to 20 watts worked fine.
He does have the reflector spokes on the bottom I hope.
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Philip
Jenkins
Sent: Sunday, August 2, 2015 5:54 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Why too much uplink power is bad/eggbeater antennas on
xmit
The discussion on uplink power fits right in with a conversation I had last
weekend...
While I was not wearing my AMSAT badge at a hamfest on July 25, a married
couple - both hams, both fairly recently licensed - recognized me from a
previous hamfest when I was wearing that badge. Their question for me was to
why they could hear (a) satellite(s), but no one could hear them...
The satellite in question is SO-50 (and I did take a few minutes explaining
the difference between linear birds and FM-only ones).
Before the OM joined us, his YL told me that her husband doesn't want to use
antennas like the Elk or Arrow, even on a tripod. I then suggested to her
that he consider a fixed elevation mount, so as to only have to track the
azimuth.
Then the OM showed up. He doesn't even want to consider the fixed-elevation,
because he'd still have to track . I suggested he leave the tracking to a
computer...still not acceptable
He then explained that they spend a lot of time in a motorhome. For his
antennas now, he is using eggbeaters. On the 440 receive side, he is
thankfully using a pre-amp, so he can hear adequately,
For the transmit, he is using 50 watts into an eggbeater, and still can't be
heard on the satellite. He told me one recommendation he was given was to
increase the xmit power to 150 watts (*I visibly shuddered*) so as to
overcome the non-directionality of the eggbeater. (And I explained why too
much uplink power is bad for both FM and linear sats, in terms of bandwidth
and power consumption on the satellite.)
On further questioning, he knew about the PL tone to turn-on SO-50, but
didn't know about the different PL to actually access the satellite on each
transmission. I explained to him that it is like terrestrial repeaters; no
matter how much power you run, the repeater won't "hear" you unless you
transmit the PL every time.
In a follow-up email the next day, I passed on the SO-50 operating guide
(PDF) from the AMSAT website, and advised him to try programming his radio
with the proper PL and frequencies for adjacent memories BEFORE consdering
increasing transmit power.
I really think his problem is not using PLs, rather than inadequate power
levels on an omni antenna.
My question is two-fold (I still need to follow-up with him). 1) For those
of you successfully using eggbeaters for the uplink (and he is adamant about
not using a yagi, despite my advice that the performance will suffer quite a
bit with eggbeaters), what output power do you typically use? I think 50
watts into an eggbeater is probably still too much power, considering 5
watts into an Arrow is usually enough for successful communications.
2) I know that various power levels are suggested for various gain antennas,
but I'm wondering what the suggested EIRP is for successful - not ones which
would hog the satellite - uplinks.
Philip N4HF
_______________________________________________
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, 3 Aug 2015 07:00:10 -0400
From: "transbets@xxxxx.xxxx <transbets@xxxxx.xxx>
To: Ted <k7trkradio@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx Mark Johns <mjohns@xxxxxx.xxx>
Subject: Re: [amsat-bb] ARISS APRS MIA?
Message-ID:
<CAA=qQdK8BSOZ3QWCzsP0AB4E7k9asH19Pua7nXVmLC5jn=5+aA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
There is a scheduled spacewalk on the 10th, and a lot of activity right
now. I am assuming the ISS is inactive in preparation for that. Hopefully
they won't be off the entire time until the 10th walk, but I am not getting
any activity during the passes as well.
http://www.nasa.gov/mission_pages/station/main/index.html
73,
WB3U
On Sun, Aug 2, 2015 at 6:38 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
> I do not know, but will keep trying. Maybe someone here knows.
>
> 73, Ted
> K7TRK
>
> -----Original Message-----
> From: Mark Johns [mailto:mjohns166@xxxxx.xxxx
> Sent: Sunday, August 02, 2015 6:41 AM
> To: Ted; 'Mark Johns'
> Subject: Re: [amsat-bb] ARISS APRS
>
> Yes, I'm fully aware it's not working, Ted. The question is, "WHY?" There
> are no scheduled dockings or EVAs, so no one seems to know.
> --
> Mark D. Johns, K?MDJ
> Decorah, Iowa USA EN43
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit, you would stay out and your
> dog would go in."
> ---Mark Twain
>
>
> ----- Original Message -----
> From: Ted <k7trkradio@xxxxxxx.xxx>
> To: 'Mark Johns' <mjohns@xxxxxx.xxx>; 'Mark Johns' <mjohns166@xxxxx.xxx>
> Cc:
> Sent: Sunday, August 2, 2015 12:21 AM
> Subject: RE: [amsat-bb] ARISS APRS
>
> Mark...zip on the 05:15 pass
>
> 73, K7TRK cn82oh
>
> p.s. heavy smoke in our valley. Don't know if that impacts signals...it is
> really dense
>
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Mark
> Johns via AMSAT-BB
> Sent: Saturday, August 01, 2015 9:06 AM
> To: AMSAT BB
> Subject: [amsat-bb] ARISS APRS
>
> Does anyone know what's up with APRS on ARISS?
> Nothing heard last two days.
> --
> Mark D. Johns, K?MDJ
> Decorah, Iowa USA EN43
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit, you would stay out and your
> dog would go in."
> ---Mark Twain
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
--
--
Betsy
transbets@xxxxx.xxx
------------------------------
Message: 4
Date: Mon, 3 Aug 2015 08:53:43 -0400
From: Mvivona <Mvivona@xxxxx.xxx>
To: "transbets@xxxxx.xxxx <transbets@xxxxx.xxx>
Cc: Mark Johns <mjohns@xxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>, Ted <k7trkradio@xxxxxxx.xxx>
Subject: Re: [amsat-bb] ARISS APRS MIA?
Message-ID: <D374D318-265E-4AA4-8298-81C722E073A6@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I guess the packet data I heard on Saturday during the evening pass was
probably me hearing a local ground station attempting contact.
Michael Vivona
Sent from my iPad
On Aug 3, 2015, at 7:00 AM, "transbets@xxxxx.xxxx <transbets@xxxxx.xxx> wrote:
There is a scheduled spacewalk on the 10th, and a lot of activity right
now. I am assuming the ISS is inactive in preparation for that. Hopefully
they won't be off the entire time until the 10th walk, but I am not getting
any activity during the passes as well.
http://www.nasa.gov/mission_pages/station/main/index.html
73,
WB3U
> On Sun, Aug 2, 2015 at 6:38 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
>
> I do not know, but will keep trying. Maybe someone here knows.
>
> 73, Ted
> K7TRK
>
> -----Original Message-----
> From: Mark Johns [mailto:mjohns166@xxxxx.xxxx
> Sent: Sunday, August 02, 2015 6:41 AM
> To: Ted; 'Mark Johns'
> Subject: Re: [amsat-bb] ARISS APRS
>
> Yes, I'm fully aware it's not working, Ted. The question is, "WHY?" There
> are no scheduled dockings or EVAs, so no one seems to know.
> --
> Mark D. Johns, K?MDJ
> Decorah, Iowa USA EN43
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit, you would stay out and your
> dog would go in."
> ---Mark Twain
>
>
> ----- Original Message -----
> From: Ted <k7trkradio@xxxxxxx.xxx>
> To: 'Mark Johns' <mjohns@xxxxxx.xxx>; 'Mark Johns' <mjohns166@xxxxx.xxx>
> Cc:
> Sent: Sunday, August 2, 2015 12:21 AM
> Subject: RE: [amsat-bb] ARISS APRS
>
> Mark...zip on the 05:15 pass
>
> 73, K7TRK cn82oh
>
> p.s. heavy smoke in our valley. Don't know if that impacts signals...it is
> really dense
>
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Mark
> Johns via AMSAT-BB
> Sent: Saturday, August 01, 2015 9:06 AM
> To: AMSAT BB
> Subject: [amsat-bb] ARISS APRS
>
> Does anyone know what's up with APRS on ARISS?
> Nothing heard last two days.
> --
> Mark D. Johns, K?MDJ
> Decorah, Iowa USA EN43
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit, you would stay out and your
> dog would go in."
> ---Mark Twain
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
--
--
Betsy
transbets@xxxxx.xxx
_______________________________________________
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: 5
Date: Mon, 03 Aug 2015 09:17:22 -0400
From: "David" <dwarnberg@xxxxxxx.xxx>
To: "'Philip Jenkins'" <n4hf.philip@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Why too much uplink power is bad/eggbeater
antennas on xmit
Message-ID: <003901d0cdee$bbef0a20$33cd1e60$@xxx>
Content-Type: text/plain; charset=US-ASCII
Philip,
I use M2 EggBeaters, both have preamps for receive... I use no more
than 10 watts and am heard fine, if and only if the sat is on a low pass
(i.e. less than 15 degrees above horizon) I may use 15 to 20 watts to be
heard.. 50 watts is way too much power and indicates another problem if
they cannot be heard..
My 2 cents
David
KK4QOE
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Philip
Jenkins
Sent: Sunday, August 02, 2015 7:54 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Why too much uplink power is bad/eggbeater antennas on
xmit
The discussion on uplink power fits right in with a conversation I had last
weekend...
While I was not wearing my AMSAT badge at a hamfest on July 25, a married
couple - both hams, both fairly recently licensed - recognized me from a
previous hamfest when I was wearing that badge. Their question for me was to
why they could hear (a) satellite(s), but no one could hear them...
The satellite in question is SO-50 (and I did take a few minutes explaining
the difference between linear birds and FM-only ones).
Before the OM joined us, his YL told me that her husband doesn't want to use
antennas like the Elk or Arrow, even on a tripod. I then suggested to her
that he consider a fixed elevation mount, so as to only have to track the
azimuth.
Then the OM showed up. He doesn't even want to consider the fixed-elevation,
because he'd still have to track . I suggested he leave the tracking to a
computer...still not acceptable
He then explained that they spend a lot of time in a motorhome. For his
antennas now, he is using eggbeaters. On the 440 receive side, he is
thankfully using a pre-amp, so he can hear adequately,
For the transmit, he is using 50 watts into an eggbeater, and still can't be
heard on the satellite. He told me one recommendation he was given was to
increase the xmit power to 150 watts (*I visibly shuddered*) so as to
overcome the non-directionality of the eggbeater. (And I explained why too
much uplink power is bad for both FM and linear sats, in terms of bandwidth
and power consumption on the satellite.)
On further questioning, he knew about the PL tone to turn-on SO-50, but
didn't know about the different PL to actually access the satellite on each
transmission. I explained to him that it is like terrestrial repeaters; no
matter how much power you run, the repeater won't "hear" you unless you
transmit the PL every time.
In a follow-up email the next day, I passed on the SO-50 operating guide
(PDF) from the AMSAT website, and advised him to try programming his radio
with the proper PL and frequencies for adjacent memories BEFORE consdering
increasing transmit power.
I really think his problem is not using PLs, rather than inadequate power
levels on an omni antenna.
My question is two-fold (I still need to follow-up with him). 1) For those
of you successfully using eggbeaters for the uplink (and he is adamant about
not using a yagi, despite my advice that the performance will suffer quite a
bit with eggbeaters), what output power do you typically use? I think 50
watts into an eggbeater is probably still too much power, considering 5
watts into an Arrow is usually enough for successful communications.
2) I know that various power levels are suggested for various gain antennas,
but I'm wondering what the suggested EIRP is for successful - not ones which
would hog the satellite - uplinks.
Philip N4HF
_______________________________________________
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, 3 Aug 2015 08:23:24 -0500
From: Clayton Coleman <kayakfishtx@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] W5PFG/P contacts from NM & CO grids
Message-ID:
<CAPovOwfe2YGsDugLpOMPuX1NQcX8vzS7Sn3=dJV1m9WW2p2hWg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Thanks to all for the contacts we made last week while I was in DM57
(CO), DM66 (NM), DM67 (CO), and DM76 (NM.)
It may be up to a week before these contacts are uploaded to Logbook
of the World.
Paper QSL requests with Self Addressed, Stamped Envelope (SASE)
included will be answered within two weeks.
73,
Clayton
W5PFG
------------------------------
Message: 7
Date: Mon, 3 Aug 2015 08:06:46 -0600
From: James Duffey <jamesduffey@xxxxxxx.xxx>
To: David <dwarnberg@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx Philip Jenkins <n4hf.philip@xxxxx.xxx>
Subject: Re: [amsat-bb] Why too much uplink power is bad/eggbeater
antennas on xmit
Message-ID: <51CA1C71-EC0B-4620-AC6E-018ED3025A9A@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I wonder what kind of feed line he issuing. RG8X or smaller can really eat
the power up.
On Aug 3, 2015, at 7:17 AM, David <dwarnberg@xxxxxxx.xxx> wrote:
> Philip,
> I use M2 EggBeaters, both have preamps for receive... I use no more
> than 10 watts and am heard fine, if and only if the sat is on a low pass
> (i.e. less than 15 degrees above horizon) I may use 15 to 20 watts to be
> heard.. 50 watts is way too much power and indicates another problem if
> they cannot be heard..
>
> My 2 cents
>
> David
> KK4QOE
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Philip
> Jenkins
> Sent: Sunday, August 02, 2015 7:54 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Why too much uplink power is bad/eggbeater antennas on
> xmit
>
> The discussion on uplink power fits right in with a conversation I had last
> weekend...
>
> While I was not wearing my AMSAT badge at a hamfest on July 25, a married
> couple - both hams, both fairly recently licensed - recognized me from a
> previous hamfest when I was wearing that badge. Their question for me was to
> why they could hear (a) satellite(s), but no one could hear them...
>
> The satellite in question is SO-50 (and I did take a few minutes explaining
> the difference between linear birds and FM-only ones).
>
> Before the OM joined us, his YL told me that her husband doesn't want to use
> antennas like the Elk or Arrow, even on a tripod. I then suggested to her
> that he consider a fixed elevation mount, so as to only have to track the
> azimuth.
>
> Then the OM showed up. He doesn't even want to consider the fixed-elevation,
> because he'd still have to track . I suggested he leave the tracking to a
> computer...still not acceptable
>
> He then explained that they spend a lot of time in a motorhome. For his
> antennas now, he is using eggbeaters. On the 440 receive side, he is
> thankfully using a pre-amp, so he can hear adequately,
>
> For the transmit, he is using 50 watts into an eggbeater, and still can't be
> heard on the satellite. He told me one recommendation he was given was to
> increase the xmit power to 150 watts (*I visibly shuddered*) so as to
> overcome the non-directionality of the eggbeater. (And I explained why too
> much uplink power is bad for both FM and linear sats, in terms of bandwidth
> and power consumption on the satellite.)
>
> On further questioning, he knew about the PL tone to turn-on SO-50, but
> didn't know about the different PL to actually access the satellite on each
> transmission. I explained to him that it is like terrestrial repeaters; no
> matter how much power you run, the repeater won't "hear" you unless you
> transmit the PL every time.
>
> In a follow-up email the next day, I passed on the SO-50 operating guide
> (PDF) from the AMSAT website, and advised him to try programming his radio
> with the proper PL and frequencies for adjacent memories BEFORE consdering
> increasing transmit power.
>
> I really think his problem is not using PLs, rather than inadequate power
> levels on an omni antenna.
>
> My question is two-fold (I still need to follow-up with him). 1) For those
> of you successfully using eggbeaters for the uplink (and he is adamant about
> not using a yagi, despite my advice that the performance will suffer quite a
> bit with eggbeaters), what output power do you typically use? I think 50
> watts into an eggbeater is probably still too much power, considering 5
> watts into an Arrow is usually enough for successful communications.
>
> 2) I know that various power levels are suggested for various gain antennas,
> but I'm wondering what the suggested EIRP is for successful - not ones which
> would hog the satellite - uplinks.
>
> Philip N4HF
> _______________________________________________
> 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
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>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
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AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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------------------------------
Message: 8
Date: Mon, 3 Aug 2015 17:06:21 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] cn76 fo29
Message-ID:
<1653655220.9213771.1438621581086.JavaMail.zimbra@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I plan to be on at 2011z,2153z,2339z
my satpc32 crashed (murphy). will someone send me a quickie sat tracker link
73 Bob CN76
------------------------------
Message: 9
Date: Mon, 3 Aug 2015 13:30:37 -0400
From: Nicholas Mahr KE8AKW <nicholasmahr1@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO-27 Turned On?
Message-ID:
<CAGu+VYvF+b=PL4a9zbm0r+jkbCJZdT7+=xr+gw9HwUv1zusnhw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
New website update on AO-27,
*Aug 1, 2015*
Turned on low power during first pass. Had good tone, received a few TLM
frames but then lost commanding of it as it came over the US. Seems to have
major interference on uplink while over the US.
It faded mid pass and was not heard from for the rest of the pass. Sent off
commands in the blind. Don't know if the TX turned off or not.
The good news is it was at least heard from after last weekend's problems.
- Michael, N3UC
http://www2.umbrasi.com/
73's KE8AKW
------------------------------
Message: 10
Date: Mon, 3 Aug 2015 17:56:17 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] so50 cn76
Message-ID:
<730533460.9249218.1438624577692.JavaMail.zimbra@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I will try so50 at 1848Z
73 bob w7lrd cn76
------------------------------
Message: 11
Date: Mon, 3 Aug 2015 12:27:00 -0600
From: Bob <ki0gqrp@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO83, 84 orbit
Message-ID: <A23C757E-8633-4A18-B88A-BBCC36BCD107@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Is there site where I can get orbit information? My program does not list
these.
Bob
------------------------------
Message: 12
Date: Mon, 03 Aug 2015 21:39:21 +0200
From: Mike Rupprecht <mail@xxxxxxxxxxxxxx.xx>
To: Bob <ki0gqrp@xxxxx.xxx>, "amsat-bb" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AO83, 84 orbit
Message-ID:
<14ef5134288.27c4.fb3187313e361abc70373d48d0fdd1a9@xxxxxxxxxxxxxx.xx>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
http://www.dk3wn.info/tle/amateur.txt
73 Mike
Gesendet mit AquaMail f?r Android
http://www.aqua-mail.com
Am 3. August 2015 21:30:40 schrieb Bob <ki0gqrp@xxxxx.xxx>:
> Is there site where I can get orbit information? My program does not list
> these.
>
> Bob
>
>
> _______________________________________________
> 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: 13
Date: Mon, 3 Aug 2015 15:53:02 -0400
From: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] AO83, 84 orbit
Message-ID: <bce314ec3b1e93d63ce60d29a7a34b35.squirrel@xxxx.xxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
Please note that Mike's list identifies these spacecraft as BRICSAT and
PSAT respectively.
They are identified as NO-83 and NO-84 on the AMSAT site
http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt
-Joe
------------------------------
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 10, Issue 229
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