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CX2SA > SATDIG 19.10.08 20:09l 905 Lines 28254 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: SSTV-MIXW (Fred VE3FAL)
2. xmit sstv to the ISS (Mr Jeffrey L Ross)
3. Board of Directors Agenda? (Timothy J. Salo)
4. Re: SSTV-MIXW vs MMSSTV (Roger Kolakowski)
5. Re: xmit sstv to the ISS (Roger Kolakowski)
6. Re: WB9L cross-satellite again (Joe)
7. Re: Old time change date? (Charlie Schlieper)
8. Satellite Info for real time mobile operator (Robert Bruninga)
9. 0900 PDT ISS Pass (Jim Jerzycke)
10. mixw sstv-iss (charter)
11. Re: WB9L cross-satellite again (Stephen J. Melachrinos)
12. Re: WB9L cross-satellite again (Jeffrey Koehler)
13. NA1SS W5KWQ QSO's 19Oct 163324Z (John Papay)
14. Re: WB9L cross-satellite again (n3tl@xxxxxxxxx.xxxx
15. ISS uplink (WCP)
16. Re: beginner question re: uplink power (Edward Cole)
17. Re: beginner question re: uplink power (corner5)
----------------------------------------------------------------------
Message: 1
Date: Sun, 19 Oct 2008 11:42:14 -0400
From: "Fred VE3FAL" <flesnick@xxxxxxx.xxx>
Subject: [amsat-bb] Re: SSTV-MIXW
To: "'Mr Jeffrey L Ross'" <radiooperator@xxxxxxx.xxx>, "'amsat'"
<amsat-bb@xxxxx.xxx>
Message-ID: <8F52E136B67B4846AB94784FCE46B16A@xxxxxxxxx>
Content-Type: text/plain; charset="US-ASCII"
Jeff:
I had noticed the same thing, I have registered version of MixW of which I
really like for other modes.
Have not got it to print a good picture yet.
MMSSTV is flawess...
Fred
VE3FAL
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Mr Jeffrey L Ross
Sent: Sunday, October 19, 2008 11:35 AM
To: amsat
Subject: [amsat-bb] SSTV-MIXW
Hi Folks, anyone using MIXW for the SSTV?
I am and all my pics are garble or not even there. any ideas how to fix
this?
anyone have some settings?
thanks in advance.
kc8gkf
p.s. using mmstv also and the pics are coming in good.
_______________________________________________
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: 2
Date: Sun, 19 Oct 2008 11:42:39 -0400
From: "Mr Jeffrey L Ross" <radiooperator@xxxxxxx.xxx>
Subject: [amsat-bb] xmit sstv to the ISS
To: "amsat" <amsat-bb@xxxxx.xxx>
Message-ID: <C893A9BC4B5843319BEA340F757BE531@xxxxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi folks, one member just reminded me about what is the chance one station
uplinking one picture uniterrupted?
Maybe we could cordinate here and use are calls as a your turn my turn such
as abzzz goes first as his starts with A, or use the last letter of the call
such as kc8gkf and everyone with f in there call (last letter) thats there
day to xmit up. something like that I think we could work out. That would
cut down on the stations trying to xmit up. Or someone could pass out times
to the users (get a list here) to xmit up. Anyother ideas?
kc8gkf
------------------------------
Message: 3
Date: Sun, 19 Oct 2008 10:19:30 -0500
From: "Timothy J. Salo" <salo@xxxxxxx.xxx>
Subject: [amsat-bb] Board of Directors Agenda?
To: amsat-bb@xxxxx.xxx
Message-ID: <48FB5002.5030306@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Could someone please post the latest agenda for the week's
Board of Directors meeting? It would be nice to have
an approximate schedule as well (so we can attend for the
topics in which we have interest).
Thanks,
-tjs
------------------------------
Message: 4
Date: Sun, 19 Oct 2008 11:46:35 -0400
From: "Roger Kolakowski" <rogerkola@xxx.xxx>
Subject: [amsat-bb] Re: SSTV-MIXW vs MMSSTV
To: "Fred VE3FAL" <flesnick@xxxxxxx.xxx>, "'Mr Jeffrey L Ross'"
<radiooperator@xxxxxxx.xxx>, "'amsat'" <amsat-bb@xxxxx.xxx>
Message-ID: <006e01c93201$df71c0e0$0200a8c0@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
I just want to throw in my $.02 for MMSSTV. Once I cleared my "ground
loops"(hum) MMSSTV took over and decoded all the files I had saved. The
"Smiley face" sync button is a savior as I noticed that the default of the
program was not the correct sync frequency (at least on my computer.)
I'm copying all the passes as .wav files in Cool Edit Pro so that I might be
able to "play" with them and maybe clean them up later.
My thanks to the Crew for spending so much time at the radios. What great
fun!
Roger
WA1KAT
----- Original Message -----
From: "Fred VE3FAL" <flesnick@xxxxxxx.xxx>
To: "'Mr Jeffrey L Ross'" <radiooperator@xxxxxxx.xxx>; "'amsat'"
<amsat-bb@xxxxx.xxx>
> Jeff:
> I had noticed the same thing, I have registered version of MixW of which I
> really like for other modes.
> Have not got it to print a good picture yet.
> MMSSTV is flawess...
>
> Fred
> VE3FAL
>
> -----Original Message-----
> Behalf Of Mr Jeffrey L Ross
> Sent: Sunday, October 19, 2008 11:35 AM
> To: amsat
> Subject: [amsat-bb] SSTV-MIXW
>
> Hi Folks, anyone using MIXW for the SSTV?
>
> I am and all my pics are garble or not even there. any ideas how to fix
> this?
------------------------------
Message: 5
Date: Sun, 19 Oct 2008 11:49:42 -0400
From: "Roger Kolakowski" <rogerkola@xxx.xxx>
Subject: [amsat-bb] Re: xmit sstv to the ISS
To: "Mr Jeffrey L Ross" <radiooperator@xxxxxxx.xxx>, "amsat"
<amsat-bb@xxxxx.xxx>
Message-ID: <007501c93202$4dd68e80$0200a8c0@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Probably use call areas as the passes go over them to better picture quality
(reception).
----- Original Message -----
From: "Mr Jeffrey L Ross" <radiooperator@xxxxxxx.xxx>
To: "amsat" <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 19, 2008 11:42 AM
Subject: [amsat-bb] xmit sstv to the ISS
> Hi folks, one member just reminded me about what is the chance one station
> uplinking one picture uniterrupted?
> Maybe we could cordinate here and use are calls as a your turn my turn
such
> as abzzz goes first as his starts with A, or use the last letter of the
call
> such as kc8gkf and everyone with f in there call (last letter) thats there
> day to xmit up. something like that I think we could work out. That would
> cut down on the stations trying to xmit up. Or someone could pass out
times
> to the users (get a list here) to xmit up. Anyother ideas?
>
> kc8gkf
------------------------------
Message: 6
Date: Sun, 19 Oct 2008 11:06:30 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: WB9L cross-satellite again
To: n3tl@xxxxxxxxx.xxx
Cc: sparkycivic@xxxx.xxx AMSAT-BB@xxxxx.xxx
Message-ID: <48FB5B06.6090606@xxx.xxx>
Content-Type: text/plain; charset=us-ascii; format=flowed
This is indeed a strange situation.
But in my mind a "QSO" did not happen.
I don't know.
This is making my Brain Hurt.
Cross bird doesn't fit. Cross bird I would say were if the output from
one bird went into another and got relayed.
Again My brain is hurting here.
>
>WB9L is intentionally working AO-51, which is thousands of km away from and
pretty much opposite AO-16, which N3TL is intentionally working. Indeed, both
satellites have the same FM/VHF uplink. WB9L copies N3TL on AO-51 at 435.300
+/-, in FM. N3TL copies WB9L on AO-16 at 437.026 +/-, in SSB. It seemed clear
to me that a complete contact between these two stations occurred across both
satellites.
>
>I'm open to any suggestions regarding a term more accurate than cross-
satellite for such contacts.
>
>73 to all,
>
>Tim - N3TL
>AMSAT Member No. 36820
>Athens, Ga. - EM84ha
>
>
>-------------- Original message from Nigel Gunn G8IFF/W8IFF
<nigel@xxxxx.xxx>: --------------
>
>
>
>
>>Jeffrey Koehler wrote: > Wouldn't it have to be, for true cross-satellite
operation to occur, the
>>downlink of one satellite to be on the uplink of another?
>>
>>Yes
>>
>>
>>_______________________________________________
>>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: 7
Date: Sun, 19 Oct 2008 11:20:09 -0500
From: "Charlie Schlieper" <n5td@xxx.xxx>
Subject: [amsat-bb] Re: Old time change date?
To: "Doug Kuitula" <ka8qcu@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <1C473BB0653446E6A2F12057849A448F@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
A quick note about InstanTrack, and the new time changes.
I have quite a few Satellite Tracking programs to use, but InstanTrack
(1.55) is still one of my favorites.
Each year when the new Daylight/Standard time change occurs, I have to go
into the INI file of InstanTrack and change the "time selection" to get it
to track properly for a short week or so. (Just having TzEdit and the
correct computer clock time for Daylight or Standard isn't enough! The
tracking program needs an update PATCH to fix this problem.)
--- Charlie, N5TD
----- Original Message -----
From: "Doug Kuitula" <ka8qcu@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, October 19, 2004 7:43 AM
Subject: [amsat-bb] Old time change date?
> Hi all,
> Would this have been the date for the old time change back standard time
> inthe U.S.? Seems like my sat passe are off by a bunch using Instant
> Track.
> 73 de Doug KA8QCU
> _______________________________________________
> 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: 8
Date: Sun, 19 Oct 2008 12:22:41 -0400
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Satellite Info for real time mobile operator
To: <amsat-bb@xxxxx.xxx>
Message-ID: <26FD635EA74F4BC2BD9D4183F50C9891@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
AMSAT Application Programmer wanted:
For years there has been an APRS program that puts out local
real-time satellites-in-view information to the front panels of
mobile users with the D7 and D700 radios:
www.aprs.org/APRSdata.html
When a satellite comes into view, the user is given the
satellite direction and range, and also the frequency and
doppler all right there on the front of his radio if someone in
the region is putting out the info on APRS.
What is new, here is that we just realized that there are tens
of thousands of additional handheld satellite radios that can
also display this local information. The FT-51R and TH-78
radios can also display TEXT messages, and so with the right
application written, these radios which are already used by many
AMSAT satellite operators, can also receive these alerts while
traveling, and thus enjoy more satellite time.
Please see the page: www.aprs.org/FT51-TH78.html
If anyone is looking for a great programming project and wants
to get
More use out of these TH78 and FT51R radios, this is a great
opportunity.
Bob, WB4APR
------------------------------
Message: 9
Date: Sun, 19 Oct 2008 09:39:07 -0700 (PDT)
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Subject: [amsat-bb] 0900 PDT ISS Pass
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <73839.5646.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Just heard Richard working a bunch of people. Had my TH-D7 and Arrow, and he
was full scale. Wonderful signals, but no chance to work him with 5 Watts!
Maybe later today when I'm back home at my "real" station.
Jim KQ6EA
------------------------------
Message: 10
Date: Sun, 19 Oct 2008 11:49:09 -0500
From: "charter" <willmarbrowns@xxxxxxx.xxx>
Subject: [amsat-bb] mixw sstv-iss
To: <amsat-bb@xxxxx.xxx>
Message-ID: <B2D744C94B3A45649E3A819AAF29BC77@xxx>
Content-Type: text/plain; charset="iso-8859-1"
mixw does not have all the formats that mmsstv has.
one pix came down from iss in pd50 mode. other modes mebbe used as well...
bruce ke?lx
------------------------------
Message: 11
Date: Sun, 19 Oct 2008 12:51:34 -0400
From: "Stephen J. Melachrinos" <melachri@xxxxxxx.xxx>
Subject: [amsat-bb] Re: WB9L cross-satellite again
To: AMSAT-BB@xxxxx.xxx
Message-ID: <48FB2D56.4861.16ABC12B@xxxxxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII
Well hams use the term "cross-band contact" to refer to a QSO made
using two bands, where one band is the medium from station A to
station B, and the other band is the medium from station B to station
A. By logical extension, a "cross-satellite contact" is exactly what
was going on here.
Note that nothing stated a "cross-link" (or crosslink) between the
satellites, or a "multi-hop" satellite contact. That's what you and
Auke are referring to. But I'll admit that it's an unusual term that
should be defined prior to use.
73,
Steve
W3HF
Oct 19, 2008 07:42:09 AM, jeffk13057@xxxxx.xxx wrote:
Wouldn't it have to be, for true cross-satellite operation to occur, the
downlink of one satellite to be on the uplink of another? I am also not sure
this is true "cross satellite" operation. I would have to agree with Auke,
that any signal heard by the other sat would have to be a fluke.
73, Jeff WB2SYK
--- On Sun, 10/19/08, Auke de Jong, VE6PWN
> From: Auke de Jong, VE6PWN
> Subject: [amsat-bb] Re: WB9L cross-satellite again
> To: AMSAT-BB@xxxxx.xxx
> Date: Sunday, October 19, 2008, 12:30 AM
> isn't cross-satellite operation involving signals
> travelling BETWEEN
> satellites before being heard by the other station? AO-16
> and AO-51 have
> their uplinks in the SAME BAND, and downlinks also in the
> SAME BAND so
> wouldn't that make it impossible to for either
> satellite to react to the
> other??
> The way I read this... you are hearing unintentional
> uplinks to the
> satellite you're listening on, just because the second
> sat has an identical
> uplink, and overlapping footprint. Please correct me if
> I'm interpreting
> this wrongly.
>
>
> 73
> Auke
> ----- Original Message -----
> From:
> To: <>
> Sent: Thursday, October 16, 2008 5:15 PM
> Subject: [amsat-bb] WB9L cross-satellite again
>
>
> > Hey folks,
> >
> > Mike, WB9L, and I worked cross-satellite at 22:50 UTC.
> Mike was on AO-51
> > to the northeast, while I was working AO-16 to the
> southwest. I heard some
> > other stations that I know were working AO-51, but
> didn't get any other
> > contacts. Both satellites were low elevation to me
> here in north Georgia.
> >
> > 73,
> >
> > Tim - N3TL
> > AMSAT Member No. 36820
> > Athens,
------------------------------
Message: 12
Date: Sun, 19 Oct 2008 09:52:45 -0700 (PDT)
From: Jeffrey Koehler <jeffk13057@xxxxx.xxx>
Subject: [amsat-bb] Re: WB9L cross-satellite again
To: n3tl@xxxxxxxxx.xxxx Joe <nss@xxx.xxx>
Cc: sparkycivic@xxxx.xxx AMSAT-BB@xxxxx.xxx
Message-ID: <69876.89627.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
How about "an inadvertent QSO'??
73,Jeff WB2SYK
--- On Sun, 10/19/08, Joe <nss@xxx.xxx> wrote:
> From: Joe <nss@xxx.xxx>
> Subject: Re: [amsat-bb] Re: WB9L cross-satellite again
> To: n3tl@xxxxxxxxx.xxx
> Cc: nigel@xxxxx.xxxx jeffk13057@xxxxx.xxxx sparkycivic@xxxx.xxx AMSAT-
BB@xxxxx.xxx
> Date: Sunday, October 19, 2008, 12:06 PM
> This is indeed a strange situation.
>
> But in my mind a "QSO" did not happen.
>
> I don't know.
>
> This is making my Brain Hurt.
>
> Cross bird doesn't fit. Cross bird I would say were if
> the output from
> one bird went into another and got relayed.
>
> Again My brain is hurting here.
>
> >
> >WB9L is intentionally working AO-51, which is thousands
> of km away from and pretty much opposite AO-16, which N3TL
> is intentionally working. Indeed, both satellites have the
> same FM/VHF uplink. WB9L copies N3TL on AO-51 at 435.300
> +/-, in FM. N3TL copies WB9L on AO-16 at 437.026 +/-, in
> SSB. It seemed clear to me that a complete contact between
> these two stations occurred across both satellites.
> >
> >I'm open to any suggestions regarding a term more
> accurate than cross-satellite for such contacts.
> >
> >73 to all,
> >
> >Tim - N3TL
> >AMSAT Member No. 36820
> >Athens, Ga. - EM84ha
> >
> >
> >-------------- Original message from Nigel Gunn
> G8IFF/W8IFF <nigel@xxxxx.xxx>: --------------
> >
> >
> >
> >
> >>Jeffrey Koehler wrote: > Wouldn't it have to
> be, for true cross-satellite operation to occur, the
> >>downlink of one satellite to be on the uplink of
> another?
> >>
> >>Yes
> >>
> >>
> >>_______________________________________________
> >>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
> >
> >
> >
> >
> >
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
------------------------------
Message: 13
Date: Sun, 19 Oct 2008 13:05:03 -0400
From: John Papay <john@xxxxxx.xxx>
Subject: [amsat-bb] NA1SS W5KWQ QSO's 19Oct 163324Z
To: amsat-bb@xxxxx.xxx
Message-ID: <200810191703.m9JH3I7l026070@xxxx.xxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Congratulations to N7RYW, VE4AMU, W9ORW, K8DID?
N0MUA, N8DZM, WF1F, KB2M, and W1YX
for making contact with Richard
Garriot NA1SS/W5KWQ on 19Oct2008 on the pass
starting at 1633Z.
A mp3 recording of these qso's with the dead
air mostly removed can be downloaded at:
http://www.papays.com/ISS_19Oct2008_163324z.mp3
Enjoy.
73,
John K8YSE
------------------------------
Message: 14
Date: Sun, 19 Oct 2008 17:03:47 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: WB9L cross-satellite again
To: AMSAT-BB@xxxxx.xxx
Message-ID:
<101920081703.21779.48FB6873000680090000551322193100029B0A02D2089B9A019C
04040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
"But in my mind a 'QSO' did not happen."
On 16 Oct. at 22:50 UTC, WB9L was in a public parking lot doing a satellite
demo for some folks using an Icom W32A HT and an Arrow handheld antenna. The
only mode he could transmit and receive in is FM. I was here at home,
transmitting in FM through a Yaesu VX-7R HT into an eFactor dual-band omni
antenna. I was receiving through an Elk dual-band log periodic, handheld, into
a Yaesu FT-817ND that was set to receive in USB. No mic was connected to the
817.
As I already have done with Joe, directly, I'll be happy to provide anyone
who's interested with an MP3 clip I recorded from the earphone jack on the FT-
817 directly into my digital recorder. If what I recorded is not a QSO, I am
again open to suggestions about what else to call an amateur radio contact
involving two stations whose operators clearly are talking to each other
across two separate and distinct satellites that shared a common uplink
frequency at the time of this contact. If our contact is not cross-satellite,
what is it?
73 to all,
Tim
-------------- Original message from Joe <nss@xxx.xxx>: --------------
> This is indeed a strange situation.
>
> But in my mind a "QSO" did not happen.
>
> I don't know.
>
> This is making my Brain Hurt.
>
> Cross bird doesn't fit. Cross bird I would say were if the output from
> one bird went into another and got relayed.
>
> Again My brain is hurting here.
>
> > >WB9L is intentionally working AO-51, which is thousands of km away from
and pretty much opposite AO-16, which N3TL is intentionally working. Indeed,
both satellites have the same FM/VHF uplink. WB9L copies N3TL on AO-51 at
435.300 +/-, in FM. N3TL copies WB9L on AO-16 at 437.026 +/-, in SSB. It
seemed clear to me that a complete contact between these two stations occurred
across both
> satellites.
> > >I'm open to any suggestions regarding a term more accurate than cross-
satellite
> for such contacts.
> >
> >73 to all,
> >
> >Tim - N3TL
> >AMSAT Member No. 36820
> >Athens, Ga. - EM84ha
> >
> > >-------------- Original message from Nigel Gunn G8IFF/W8IFF :
> --------------
> >
> >
> >
> >
> >>Jeffrey Koehler wrote: > Wouldn't it have to be, for true cross-satellite
> operation to occur, the
> >>downlink of one satellite to be on the uplink of another?
> >>
> >>Yes
> >>
> >>
> >>_______________________________________________
> >>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
> >
> >
> >
> >
> >
> _______________________________________________
> 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: 15
Date: Sun, 19 Oct 2008 13:06:01 -0400
From: "WCP" <wcp2@xxxxx.xxx>
Subject: [amsat-bb] ISS uplink
To: <amsat-bb@xxxxx.xxx>
Message-ID: <000701c9320c$f6fc5c60$1401a8c0@xxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Voice 145.200 or 144.490 US should be 145.200 right
------------------------------
Message: 16
Date: Sun, 19 Oct 2008 09:22:09 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: beginner question re: uplink power
To: amsat-bb@xxxxx.xxx
Message-ID: <200810191722.m9JHM9tq093268@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 09:30 PM 10/18/2008, 12.01 wrote:
>hello,
>
>I have a beginner question. I am in the process of setting up my first
>satellite station. My initial investment is minimal and I have chosen
>to start out with a pair of 2m and 70cm omni antennas on the roof. To
>help out a bit I am also adding a mast mount preamp on each antenna. To
>protect the preamps they will be switched out of line by a RF sense
>switch (one for each amp). For reference the two preamps and the pair
>of RF switches are all made by Ramsey (I know there are better preamps,
>but not available in my current budget). I am keeping this initial
>adventure limited to the LEOs (and ISS, etc.).
>
>_The question: _ When I assemble the RF switches I must choose a RF
>range for the switch to work within. The range is determined by the
>choice of a specific resistor. The default three ranges suggested are
>0-10 watts, 10-30 watts, and 30-100 watts. I would be able to change
>the range later but it would require removing the unit from the mast.
>
>So... not having any experience (yet),_ what uplink power range is
>recommend for non-gain antennas?_ Is there one range that should cover
>the LEOs? If not, how much should I expect the required uplink power
>needs to vary across various satellites? Is it different for each band?
>I have read that it is always best to never be louder than the beacon
>and that's fine. I'm just needing to know where to start off my
>hardware choices.
>
>Thanks in advance for any help from you folks with the know-how. I look
>forward to a qso with you.
>
>.paul ac0z
>_______________________________________________
>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
I'm surprised that you have had only one reply. I am not QRV on the
Leos so my advise is not as good as what you might get. My
"understanding" is that one can work most of the Leos with power
<10w. This is IF the stations on the bird also comply by not using
more power than is needed. If a "power war" ensues to try to capture
the satellite then running low power may be less effective to "break in".
But seeing that so many folks run HT's that typically are 5w, I think
you might chose the lowest range as long as your equipment output
matches. You have to consider that you will have no antenna gain
using omni-directional antennas so uplink RF power needs are
affected, accordingly. NOW if some experienced sat op will add their
input on this subject you should have the info you need.
I wonder if the Ramsey preamps allow for "hard" switching. That is
by separate control line that the radio PTT controls. Then You have
no issue with RF power and would run the units with the RF sense
disabled. I should state that "many" (dare I say most) experienced
VHFers that run high power (>100w) use hard-wired switching. I know
of NO eme stations that use RF sense control lines.
PS: when my standard AO-10/13/40 ground station is re-installed I
will have available 5-60w with 16.5 dBc UHF uplink (all-mode).
***********************************************************
73, Ed - KL7UW BP40iq, 6m - 3cm
144-EME: FT-847, mgf-1801, 4x-xp20, 185w
1296-EME: DEMI-Xvtr, 0.30 dBNF, 4.9m dish, 60W
http://www.kl7uw.com AK VHF-Up Group
NA Rep. for DUBUS: dubususa@xxxxxxx.xxx
***********************************************************
------------------------------
Message: 17
Date: Sun, 19 Oct 2008 10:42:08 -0700
From: corner5 <corner5@xxxxxxx.xxx>
Subject: [amsat-bb] Re: beginner question re: uplink power
To: Roger Kolakowski <rogerkola@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <48FB7170.9090904@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Roger,
Thanks very much for the reply. I did forget to mention that I will be
using my Kenwood TS2000 for this purpose. This allows me the full 0-100
watts choice for 2m, and 0-50 watts choice for 70cm. The preamps are
only for receive. The RF switches are between the rig and the preamps
and will bypass the preamps upon transmit. I can start out my RF out
anywhere within the above stated ranges.
Any further thoughts?
.paul
Roger Kolakowski wrote:
>> My initial investment is minimal
>>
>
>
>> When I assemble the RF switches I must choose a RF
>> range....The range is determined by the
>> choice of a specific resistor. The default three >ranges suggested are
>> 0-10 watts, 10-30 watts, and 30-100 watts.
>>
>
> The answer is actually in what transmitters or power amplifiers are you
> planning to use that fit within your budget?
>
> Watts cost money...
>
> With a limited gain omnidirectional you might best aim toward the middle
> range but if you are looking at used SSB/CW equipment at 430, many of the
> less expensive older radios only ran 10 watts out. Of course a "Linear
> Amplifier" for SSB/CW could move you up but is not necessarily inexpensive.
>
> You might want to just accept the fact that you may need to "climb the
> tower" again once you settle on your transmitters.
>
> Roger
> WA1KAT
>
> Sent: Sunday, October 19, 2008 1:30 AM
> Subject: [amsat-bb] beginner question re: uplink power
>
>
>
>> hello,
>>
>>
>
> My initial investment is minimal
>
> When I assemble the RF switches I must choose a RF
> range....The range is determined by the
>
>> choice of a specific resistor. The default three ranges suggested are
>> 0-10 watts, 10-30 watts, and 30-100 watts.
>>
>
>
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 3, Issue 538
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