[amsat-bb] Re: SATPC32 and FT847

Clare Fowler clarefowler at rogers.com
Sun Apr 10 13:07:15 PDT 2011

There is also the possability the FT-847 is a early production model.
The original design did not include two-way CAT control.
Models withe serial number 8G05xxxx or later provided full CAT control
I have an early unmodified FT-847 which will set the designated doppler
corrected up and down freqs when the C for CAT control is clicked but
it will not follow up with auto updating.


----- Original Message ----- 
From: "Tom Schuessler" <tjschuessler at verizon.net>
To: <amsat-bb at amsat.org>
Sent: Sunday, April 10, 2011 12:38 AM
Subject: [amsat-bb] SATPC32 and FT847

> Hi all,
> In an attempt to dabble my toes in the linear transponder pool, I asked a
> FT847 owner friend to bring his rig over to try and understand the 
> mechanics
> of making it all work with the computer interfaced.  Got SatPC32 to
> communicate at 9600, 8, none, 1, none, with the radio and the radio
> responded to changes I made on the program like using keystrokes to modify
> the frequency of uplink or downlink.  Problem is that although the program
> was tracking Doppler correctly, the radio was not tracking at all.  With 
> the
> multiple lines of possibilities on the Doppler.sqf file as is the case for
> AO-51, I can go to the CAT dialog and change the mode frequencies just 
> fine,
> the radio goes to the new frequencies and even reflects the current state 
> of
> the Doppler shifted frequencies but from there, no Doppler corrections
> occur.
> Now I remember reading the "Manual" that "CAT Delay" for the FT897 needed 
> to
> be set to 20.   Cat Delay is in the "Radio Setup" dialog is defaulted to 
> 70.
> I realize this now after the fact with radio not in my presence.  Is this
> the reason that the above mentioned problem could be occurring?
> I hope to make another go at this in a few weekends in the hope of getting
> ready for Field Day.  Thanks for the help of the list.
> Tom Schuessler
> 2713 Lake Gardens Drive
> Irving, Texas  75060
> 972-986-7456
> 214-403-1464 (Cell)
> n5hyp at arrl.net
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