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CX2SA > SATDIG 04.01.09 16:44l 795 Lines 24938 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: RH and LH CP simutaniously (R. Chastain)
2. Re: RH and LH CP simutaniously (R. Chastain)
3. ISS V/U active and loud (Bill Dzurilla)
4. Re: ISS V/U active and loud (David - KG4ZLB/M?ZLB)
5. Re: RH and LH CP simutaniously (John B. Stephensen)
6. Re: RH and LH CP simutaniously (Art McBride)
7. Re: ISS V/U active and loud (Greg D.)
8. Re: RH and LH CP simutaniously (Edward Cole)
9. ARISS V/U over UK this morning (andy thomas)
10. Re: ARISS V/U over UK this morning (andy thomas)
11. Re: RH and LH CP simutaniously (Nigel Gunn G8IFF/W8IFF)
12. ISS over US ~13:20z (Alan Sieg WB5RMG)
13. Re: RH and LH CP simutaniously (Tim Tapio)
14. QSL Cards? (Tom Williams)
----------------------------------------------------------------------
Message: 1
Date: Sat, 3 Jan 2009 19:27:18 -0800 (PST)
From: "R. Chastain" <suenrod@xxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: amsat-bb@xxxxx.xxx
Message-ID: <127469.23880.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
>From what I have read from people with switchable RHCP/LHCP, they can switch
to the other polorazation to combat fading. Wouldn't doing this at a fast rate
accomplish the same goal?
?
I admit my antenna theory is very weak and surely someone would have
considered this long ago.
?
Thanks,
RoD
KD0XX
--- On Fri, 1/2/09, Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx> wrote:
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: Re: [amsat-bb] RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>
Cc: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Date: Friday, January 2, 2009, 6:28 PM
Would effectively cause a 3dB loss of antenna gain as seen by another
circularly
polarised antenna as the receiving end would receive negligable signal 50% of
the time.
R. Chastain wrote:
> Hi all,
> ??? Has anyone ever considered the possibilty of using PIN diodes
and a free running square wave oscillator to electronically switch between
RHCP
and LHCP?
> The switching frequency would have to be high enough so as to not
introduce
> a tone to the signal.
> ?
> Just a thought I have had for awhile.
> ?
> RoD
> KD0XX
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database:
270.10.2/1871 - Release Date: 1/1/2009 5:01 PM
>
>
--
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Nigel A. Gunn. G8IFF W8IFF (was KC8NHF)
1865 El Camino Drive, Xenia, OH 45385-1115, USA 937 825 5032
e-mail nigel@xxxxx.xxx www http://www.ngunn.net Member of ARRL,
GQRP #11396, QRPARCI #11644, SOC #548, Flying Pig #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
------------------------------
Message: 2
Date: Sat, 3 Jan 2009 19:32:47 -0800 (PST)
From: "R. Chastain" <suenrod@xxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: Amsat-BB <amsat-bb@xxxxx.xxx>
Message-ID: <14035.90703.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
But if the switching frequency was say.... 30-40khz, wouldn't the sidebands be
so far out of range so as not to cause interferance.
?
RoD
KD0XX
--- On Fri, 1/2/09, John B. Stephensen <kd6ozh@xxxxxxx.xxx> wrote:
From: John B. Stephensen <kd6ozh@xxxxxxx.xxx>
Subject: Re: [amsat-bb] RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>, "Amsat-BB" <amsat-bb@xxxxx.xxx>
Date: Friday, January 2, 2009, 6:30 PM
You can use a 90-degree hybrid splitter/combiner to produce LHCP and RHCP for
two receivers. Switching will produce sidebands at the switching frequency and
alias undesired signals into the receiver passband.
73,
John
KD6OZH
----- Original Message ----- From: "R. Chastain"
<suenrod@xxxxx.xxx>
To: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Sent: Friday, January 02, 2009 23:15 UTC
Subject: [amsat-bb] RH and LH CP simutaniously
Hi all,
Has anyone ever considered the possibilty of using PIN diodes and a free
running square wave oscillator to electronically switch between RHCP and LHCP?
The switching frequency would have to be high enough so as to not introduce
a tone to the signal.
Just a thought I have had for awhile.
RoD
KD0XX
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Sat, 3 Jan 2009 19:55:42 -0800 (PST)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] ISS V/U active and loud
To: amsat-bb@xxxxx.xxx
Cc: fm-satellite@xxxxxxxxxxx.xxx
Message-ID: <923200.6702.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
The ISS repeater will be in V/U mode through January 17, according to
http://www.southgatearc.org/news/january2009/ariss_anniversary_update.htm .
I just had a 20 degree pass and it was really loud, far louder than anything
I've ever heard from AO-51 or any other bird. Quite a lot of activity, I
worked 6Y5RA, N4QWZ, YV5MM, and KG4ZLB. Called N2EHG (good signal) several
times but no answer.
Note that this is NOT the usual ISS repeater configuration (used to be 70cm
uplink, 2 meter downlink). The downlink is now on 437.8, and the uplink is on
145.99 (67hz PL tone needed).
73, Bill NZ5N
------------------------------
Message: 4
Date: Sat, 03 Jan 2009 23:07:04 -0500
From: David - KG4ZLB/M?ZLB <m0zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS V/U active and loud
To: billdz.geo@xxxxx.xxx
Cc: fm-satellite@xxxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <496035E8.3010307@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Really loud and strong signal even at 17 degree maximum for me - great
to work Bill (NZ5N).
I would like to also publicly thank Erich for his fantastic help in
getting my copy of SatPC32 ready for this mode and addition of PL tone -
I didn't have to do anything except talk!
Thanks Erich!
David
KG4ZLB/M0ZLB
www.kg4zlb.com
Bill Dzurilla wrote:
> The ISS repeater will be in V/U mode through January 17, according to
> http://www.southgatearc.org/news/january2009/ariss_anniversary_update.htm .
>
> I just had a 20 degree pass and it was really loud, far louder than anything
I've ever heard from AO-51 or any other bird. Quite a lot of activity, I
worked 6Y5RA, N4QWZ, YV5MM, and KG4ZLB. Called N2EHG (good signal) several
times but no answer.
>
> Note that this is NOT the usual ISS repeater configuration (used to be 70cm
uplink, 2 meter downlink). The downlink is now on 437.8, and the uplink is on
145.99 (67hz PL tone needed).
>
> 73, Bill NZ5N
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 5
Date: Sun, 4 Jan 2009 04:38:40 -0000
From: "John B. Stephensen" <kd6ozh@xxxxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>, "Amsat-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <38CEA1AC48FE4B56A2E00CA8DDAA8058@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
The entire RF spectrum is being modulated, so if there is another signal
30-40 kHz away from the desired signal, it will be modulated and one of the
sidebands will be on the same frequency as the desired signal.
73,
John
KD6OZH
----- Original Message -----
From: "R. Chastain" <suenrod@xxxxx.xxx>
To: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Sent: Sunday, January 04, 2009 03:32 UTC
Subject: [amsat-bb] Re: RH and LH CP simutaniously
But if the switching frequency was say.... 30-40khz, wouldn't the sidebands
be so far out of range so as not to cause interferance.
RoD
KD0XX
--- On Fri, 1/2/09, John B. Stephensen <kd6ozh@xxxxxxx.xxx> wrote:
From: John B. Stephensen <kd6ozh@xxxxxxx.xxx>
Subject: Re: [amsat-bb] RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>, "Amsat-BB" <amsat-bb@xxxxx.xxx>
Date: Friday, January 2, 2009, 6:30 PM
You can use a 90-degree hybrid splitter/combiner to produce LHCP and RHCP
for
two receivers. Switching will produce sidebands at the switching frequency
and
alias undesired signals into the receiver passband.
73,
John
KD6OZH
----- Original Message ----- From: "R. Chastain"
<suenrod@xxxxx.xxx>
To: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Sent: Friday, January 02, 2009 23:15 UTC
Subject: [amsat-bb] RH and LH CP simutaniously
Hi all,
Has anyone ever considered the possibilty of using PIN diodes and a free
running square wave oscillator to electronically switch between RHCP and
LHCP?
The switching frequency would have to be high enough so as to not introduce
a tone to the signal.
Just a thought I have had for awhile.
RoD
KD0XX
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Sat, 3 Jan 2009 23:01:31 -0800
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: "'R. Chastain'" <suenrod@xxxxx.xxx>, "'Amsat-BB'"
<amsat-bb@xxxxx.xxx>
Message-ID: <48067C0BEF1141768F14CB92F838D6BB@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi All,
My thoughts:
The polarization is a function of the pointing angle of the Space Craft
antenna. If you are looking at the back side the polarization will be
opposite rotation. Switching polarization will improve performance provided
the antenna does not have a large front to back ratio. Reflections also will
reverse the polarization but they are at least -15 db lower than the direct
signal.
Switching from right to left hand rotation is something that is done if you
experience a fade and most of the time the change is not beneficial.
Continuous switching will give signal 1/2 the time and noise the other half
of the time. The net result is a 3 dB loss in signal all of the time as the
signal is never equal in both rotations at he same time for the same
observer location.
Art, KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of R. Chastain
Sent: Saturday, January 03, 2009 7:33 PM
To: Amsat-BB
Subject: [amsat-bb] Re: RH and LH CP simutaniously
But if the switching frequency was say.... 30-40khz, wouldn't the sidebands
be so far out of range so as not to cause interferance.
?
RoD
KD0XX
--- On Fri, 1/2/09, John B. Stephensen <kd6ozh@xxxxxxx.xxx> wrote:
From: John B. Stephensen <kd6ozh@xxxxxxx.xxx>
Subject: Re: [amsat-bb] RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>, "Amsat-BB" <amsat-bb@xxxxx.xxx>
Date: Friday, January 2, 2009, 6:30 PM
You can use a 90-degree hybrid splitter/combiner to produce LHCP and RHCP
for
two receivers. Switching will produce sidebands at the switching frequency
and
alias undesired signals into the receiver passband.
73,
John
KD6OZH
----- Original Message ----- From: "R. Chastain"
<suenrod@xxxxx.xxx>
To: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Sent: Friday, January 02, 2009 23:15 UTC
Subject: [amsat-bb] RH and LH CP simutaniously
Hi all,
Has anyone ever considered the possibilty of using PIN diodes and a free
running square wave oscillator to electronically switch between RHCP and
LHCP?
The switching frequency would have to be high enough so as to not introduce
a tone to the signal.
Just a thought I have had for awhile.
RoD
KD0XX
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3733 (20090102) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3733 (20090102) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3734 (20090103) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3734 (20090103) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
------------------------------
Message: 7
Date: Sun, 4 Jan 2009 00:06:02 -0800
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS V/U active and loud
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W268CCC2E28FD84F92D3AD2A9E00@xxx.xxx>
Content-Type: text/plain; charset="Windows-1252"
Agreed! I just worked N4QWZ in Tennessee, and W5GLD in Texas, on a low pass
from central California. The last exchange was with the Station at less than
a degree elevation, plus or minus a couple, and it only a little scratchy
before dropping off. Are you sure it's running low power?
Thanks to the ARISS team, and the folks up on the Station!
Greg KO6TH
> Date: Sat, 3 Jan 2009 19:55:42 -0800
> From: billdz.geo@xxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> CC: fm-satellite@xxxxxxxxxxx.xxx
> Subject: [amsat-bb] ISS V/U active and loud
>
> The ISS repeater will be in V/U mode through January 17, according to
> http://www.southgatearc.org/news/january2009/ariss_anniversary_update.htm .
>
> I just had a 20 degree pass and it was really loud, far louder than anything
I've ever heard from AO-51 or any other bird. Quite a lot of activity, I
worked 6Y5RA, N4QWZ, YV5MM, and KG4ZLB. Called N2EHG (good signal) several
times but no answer.
>
> Note that this is NOT the usual ISS repeater configuration (used to be 70cm
uplink, 2 meter downlink). The downlink is now on 437.8, and the uplink is on
145.99 (67hz PL tone needed).
>
> 73, Bill NZ5N
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_________________________________________________________________
It?s the same Hotmail?. If by ?same? you mean up to 70% faster.
http://windowslive.com/online/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_broad1_122
008
------------------------------
Message: 8
Date: Sun, 04 Jan 2009 00:39:12 -0900
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: "R. Chastain" <suenrod@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <200901040939.n049dCo8088377@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
At 06:27 PM 1/3/2009, R. Chastain wrote:
> From what I have read from people with
> switchable RHCP/LHCP, they can switch to the
> other polorazation to combat fading. Wouldn't
> doing this at a fast rate accomplish the same
> goal? ? I admit my antenna theory is very weak
> and surely someone would have considered this
> long ago. ? Thanks, RoD KD0XX --- On Fri,
> 1/2/09, Nigel Gunn G8IFF/W8IFF
> <nigel@xxxxx.xxx> wrote: From: Nigel Gunn
> G8IFF/W8IFF <nigel@xxxxx.xxx> Subject: Re:
> [amsat-bb] RH and LH CP simutaniously To: "R.
> Chastain" <suenrod@xxxxx.xxx> Cc: "Amsat-BB"
> <amsat-bb@xxxxx.xxx> Date: Friday, January 2,
> 2009, 6:28 PM Would effectively cause a 3dB
> loss of antenna gain as seen by another
> circularly polarised antenna as the receiving
> end would receive negligable signal 50% of the
> time. R. Chastain wrote: > Hi all, > ?????????
> Has anyone ever considered the possibilty of
> using PIN diodes and a free running square wave
> oscillator to electronically switch between
> RHCP and LHCP? > The switching frequency would
> have to be high enough so as to not introduce >
> a tone to the signal. > ??? > Just a thought I
> have had for awhile. > ??? > RoD >
> KD0XX > > >
> _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. Opinions
> expressed are those of the author. > Not an
> AMSAT-NA member? Join now to support the
> amateur satellite program! > Subscription
> settings:
> http://amsat.org/mailman/listinfo/amsat-bb >
> ------------------------------------------------------------------------
> > > > No virus found in this incoming
> message. > Checked by AVG - http://www.avg.com
> Version: 8.0.176 / Virus Database:
> 270.10.2/1871 - Release Date: 1/1/2009 5:01
> PM > > --
> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
> Nigel A. Gunn. G8IFF W8IFF (was KC8NHF) 1865
> El Camino Drive, Xenia, OH 45385-1115,
> USA 937 825 5032 e-mail
> nigel@xxxxx.xxx www
> http://www.ngunn.net Member of ARRL, GQRP
> #11396, QRPARCI #11644, SOC #548, Flying Pig
> #385, Dayton ARA
> #2128, AMSAT-NA LM-1691, AMSAT-UK,
> MKARS, ALC
> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed
> are those of the author. Not an AMSAT-NA
> member? Join now to support the amateur
> satellite program! Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
The problem with switching is knowing when to
switch. If you switch to LHCP when the signal
favors RHCP you will not hear anything due to
20-dB cross polarization loss. The change of
polarization isn't a regular event (or
predictable for the average ham). Another
approach to polarization diversity would be by
using two receivers. One connected to RHCP and
the other to LHCP, The receivers would need to
be in phase sync (use a common LO). Then using a
program like Winrad (or Linrad if you use Linux)
the actual polarization will display and be
maximized. You can feed each receiver to a
stereo headphone and you will hear the shift go
from side to side. Such a system is used on eme
by a few folks. It is a bit more complicated to
do than switching, as you propose.
A better approach for satellite is just having
the capability to switch pol when it is
needed. if signals begin to fade, you switch pol to check if that is better.
73, Ed - KL7UW
------------------------------
Message: 9
Date: Sun, 4 Jan 2009 10:38:36 +0000 (GMT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
Subject: [amsat-bb] ARISS V/U over UK this morning
To: amsat <amsat-bb@xxxxx.xxx>, sarex@xxxxx.xxx
Message-ID: <792344.82337.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Heard myself very clearly on v/u as the ISS came in Westbound over the sea (my
favourite orbit)- but no one to talk to circa 0530utc here in UK/Europe! As
footprint came over continental europe the ususal burps and hisses from an FM
repeater that's overdriven, copied RR in the flow.
0703 at low elevation much the same, talking clearly to myself, missed a qso
with HB9ICC at the end of the pass.
XYL not impressed with my dedication...hi
73 de andy g0SFJ
------------------------------
Message: 10
Date: Sun, 4 Jan 2009 11:38:33 +0000 (GMT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
Subject: [amsat-bb] Re: ARISS V/U over UK this morning
To: amsat <amsat-bb@xxxxx.xxx>, sarex@xxxxx.xxx
Message-ID: <348587.50591.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Eastbound over the sea, from due West, obviously, sorry.
G0SFJ
--- On Sun, 4/1/09, andy thomas <andythomasmail@xxxxx.xx.xx> wrote:
> From: andy thomas <andythomasmail@xxxxx.xx.xx>
> Subject: ARISS V/U over UK this morning
> To: "amsat" <amsat-bb@xxxxx.xxx>, sarex@xxxxx.xxx
> Date: Sunday, 4 January, 2009, 10:38 AM
> Heard myself very clearly on v/u as the ISS came in
> Westbound over the sea (my favourite orbit)- but no one to
> talk to circa 0530utc here in UK/Europe! As footprint came
> over continental europe the ususal burps and hisses from an
> FM repeater that's overdriven, copied RR in the flow.
>
> 0703 at low elevation much the same, talking clearly to
> myself, missed a qso with HB9ICC at the end of the pass.
>
> XYL not impressed with my dedication...hi
>
> 73 de andy g0SFJ
------------------------------
Message: 11
Date: Sun, 04 Jan 2009 13:18:46 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4960B736.2070109@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
But why should I have to check? That's one of the computers jobs.
Edward Cole wrote:
>
> A better approach for satellite is just having
> the capability to switch pol when it is
> needed. if signals begin to fade, you switch pol to check if that is
better.
>
------------------------------
Message: 12
Date: Sun, 4 Jan 2009 07:29:15 -0600 (CST)
From: "Alan Sieg WB5RMG" <wb5rmg@xxxxxxx.xxx>
Subject: [amsat-bb] ISS over US ~13:20z
To: amsat-bb@xxxxx.xxx
Message-ID: <3492.192.168.121.31.1231075755.squirrel@xxx.xxx.xxx.xx>
Content-Type: text/plain;charset=iso-8859-1
Heard several stations working thru ISS u/v repeater,
including Mike Fincke - KE5AIT calling for Ken - N5VHO ...
Pretty strong signals coming down, not enough ERP here to get in.
Thanks /;^)
--
<- Licensed in 1976, WB5RMG = Alan Sieg * AMSAT#20554 ->
<- http://www.somenet.net * http://wb5rmg.somenet.net ->
<- http://www.linkedin.com/in/alansieg * My 'Day Job' ->
------------------------------
Message: 13
Date: Sun, 4 Jan 2009 08:40:40 -0500
From: "Tim Tapio" <tim@xxxxxxxx.xxx>
Subject: [amsat-bb] Re: RH and LH CP simutaniously
To: "'Nigel Gunn G8IFF/W8IFF'" <nigel@xxxxx.xxx>, "'Edward Cole'"
<kl7uw@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <014101c96e72$094bcee0$1be36ca0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Then as suggested, you have a receiver set for each case and let them vote
as to has the best signal...that's letting the computer do the work....
Tim T. K4SHF
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nigel Gunn G8IFF/W8IFF
Sent: Sunday, January 04, 2009 8:19 AM
To: Edward Cole
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: RH and LH CP simutaniously
But why should I have to check? That's one of the computers jobs.
Edward Cole wrote:
>
> A better approach for satellite is just having the capability to
> switch pol when it is needed. if signals begin to fade, you switch
> pol to check if that is better.
>
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Message: 14
Date: Sun, 4 Jan 2009 02:26:57 -0800 (PST)
From: Tom Williams <tdub20120@xxxxx.xxx>
Subject: [amsat-bb] QSL Cards?
To: "AMSAT-BB@xxxxx.xxxx <AMSAT-BB@xxxxx.xxx>
Message-ID: <783462.12262.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
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I'm just starting to work sats - are QSL cards commonly exchanged? How is the
exchange initiated? Also, what is the voice protocol on a busy bird?
Thanks,
Tom Williams
KJ4EAW
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End of AMSAT-BB Digest, Vol 4, Issue 10
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