[hpsdr] Center frequency

[Chris Albertson]

Frank,

Better to adopt some widely used "standard" serial protocol for your box.
 Then you will find you have a wide choice of software that already speaks
that protocol.  Also if one of the SDR programs were to by modified to send
out serial data when the frequency is changed it would be best if it send a
"standard" format so that it could drive more hardware.   One example of a
standard is Icom's CT-17. But there are others maybe better.

Then what you'd have to do is add a little uP that has a serial port and 16
output pins.  A pic or avr like that can be found in a 20 pin dip package
for about $3.   The uP would contnously monitor the serial port looking for
commands it recognizez then when it sees one change the values of the 16
output pins.

On Sun, Jan 30, 2011 at 6:55 AM, FRANCIS CARCIA <carcia at sbcglobal.net>wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
>
> Hi everyone,
> I wonder if there is a way to output the HPSDR center frequency on the
> display? I only need 10 kHz resolution. A while ago I picked up a nice cubic
> pre-post selector with a built in T/R relay. It takes 4-4bit BCD parallel
> control bits to tune 1.6 to 30 MHz. All built in a 1u rack panel.  A serial
> stream of frequence through a shift register would be an easy interface.
> Binary would be okwith the addition of a look up table.
> Thanks Frank
> WA1GFZ
>
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-- 
=====
Chris Albertson
Redondo Beach, California
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