[JRC] JST245 Band info decoding...

[Bob Spooner]

Fabio,

Between the electronic keyer on/off switch and the linear amp connector is a
9-pin connector labeled ANT TUNER on my JST-245. This connects to the
NFG-230 external automatic tuner. I have one of these. It stores settings by
frequency, and automatically follows as I tune, so you should be able to
decode the output for changing antennas as you change bands.

73,
Bob  AD3K

                            Robert L. Spooner
                     Registered Professional Engineer
                       Associate Research Engineer
                  Intelligent Control Systems Department
 
         Applied Research Laboratory        Phone: (814) 863-4120
         The Pennsylvania State University  FAX:   (814) 863-7841
         P. O. Box 30
         State College, PA 16804-0030       rls19 at psu.edu
 

> -----Original Message-----
> From: jrc-bounces at mailman.qth.net 
> [mailto:jrc-bounces at mailman.qth.net] On Behalf Of Fabio IZ4AFW
> Sent: Sunday, March 12, 2006 3:59 AM
> To: jrc at mailman.qth.net
> Subject: [JRC] JST245 Band info decoding...
> 
> Hi guys,
>     I am going to build a microprocessor-controlled antenna 
> switch, to automatically switch my antennas when I change bands.
> Originally my idea was getting band data from the PC (running
> Logger32 and/or Writelog), available on the parallel port, 
> but actually I am thinking that the very same data should be 
> somewhere available from the radio (JST-245) itself.
> Unfortunately, the task seems to be more difficult than what 
> I originally thought, because in this case we don't have a 
> separate connector with band data (like in some Yaesu rigs, I think).
> Anyway, I think that the data should be available, because if 
> you connect a JRL-2000F linear amplifier that one can be 
> tuned remotely from the '245, so it has to know the frequency.
> Looking at the various connectors available on the back of 
> the '245, I noticed a TXD and RXD pin in the Linear Amp 
> connector, respectively "Bus line output" and "Bus line 
> input". Could the info be here?
> 
> Does anyone have more info on this, please?
> Thanks a lot in advance,
> 73
> Fabio
>   IZ4AFW
> 
> 
> --
> EMail                   mantoz at alice.it
>                          iz4afw at amsat.org
> Home Page               http://www.qsl.net/iz4afw
> 
> 
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