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Re: Re: SL-137 Manual Request



Now I see your dilemma....

The receiver and the card are from two different systems

The actual matching cards and their matching receivers along with setup are
all in the 150 page pdf of QFAX (no schematics however),

As for the future of APT...from the horse's mouth (NOAA):

"NOAA still has ....NOAA-19 yet to be launched, and both... (it and
NOAA-18)... will will still carry APT (See launch schedule)...Based on the
typical life expectancy of the satellites, we would expect APT will be
available on at least one NOAA satellite until about 2010. APT will no
longer be available on NOAA satellites after NOAA-19, and will be replaced
by digital services on the next generation NPOESS satellites expected to be
launched beginning in 2009."

Sorry I can't be of more help,

Roger
WA1KAT

----- Original Message ----- 
From: "Heather" <heather@execulink.com>
To: <amsat-bb@amsat.org>
Sent: Sunday, May 21, 2006 1:24 PM
Subject: [amsat-bb] Re: SL-137 Manual Request


> A "capture board" came with the SL-137. It is an "OFS WeatherFAX" ISA
> card with one audio input. It originally came with software, but that
> did not accompany the board. I'm not too concerned about either of
> these; I can happily decode an audio signal if I can find one coming out
> of the SL-137. I have often used WxSat or JVComm32 or WxToIMG and other
> software for this purpose.
>
> Weirdly, the hardware came with two cables, a DB9-to-DB9 and a
> low-density DB15 to 3 mono audio plugs. Neither of these gives me any
> clues as to the pinouts, power requirements or command functions of the
> SL-137.
>
> Someone suggested in email that the box probably takes 12V somewhere on
> the DB9, scans for satellites (with no command input) and, upon lock,
> puts out a 1V RMS audio signal, probably on pin 3 or pin 4. I was also
> warned that there may be a 5V pre-amp supply on the VHF port.
> Unfortunately, there is a "To PC" label above the DB9 that confuses the
> issue. Neither RS232 nor RS422 standards include 12V power. If the DB9
> is not standard RS232, then all bets are off on the rest of the pins, too.
>
> Looking at the board, it looks like power may be on pins 8-9. Pins
> 1,2,3,6,7 are also in use. The RS232 standard  reserves 2 & 3 for Tx and
> Rx, 1 & 7 for shield and signal ground. 6 is DCE ready, so it looks like
> this unit is fully equipped for serial communications.
>
> I didn't know about any impending demise of 137 MHz APT. NOAA-18 has
> fairly recently gone on-line, and I thought there were upcoming launches
> in the NOAA-N series that would keep the system on-line until 2011 or
> something. Since I'm setting up a museum display, I can just change the
> sign from "Live Satellite Weather" to "Historical Satellite Hardware"
> anyway.
>
> Thanks very much all!
>
> Heather
> ----
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----
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