[amsat-bb] Re: Satellite Transceiver

[Alan]

Clarification needed:

The schematic below is for a DB25, I said it fits in DB9.  This is correct
except that  pin numbers on DB9 are different.

See here:

http://picasaweb.google.com/ve4yz.alan/RS232TTL#5321286979431019122



> -----Original Message-----
> From: Alan [mailto:ve4yz at mts.net] 
> Sent: April 5, 2009 1:55 PM
> To: 'kq6ea at pacbell.net'; 'AMSAT BB'; 'Sebastian'
> Subject: RE: [amsat-bb] Re: Satellite Transceiver
> 
> TTL/RS232 for FT 736r.
> 
> You can fit it inside a DB9
> 
> I've used this circuit that uses a couple of 2N2222
> 
> http://www.mindspring.com/~n2wwd/html/body_doppler_compensation.html
> 
> 
> 
> 
> > -----Original Message-----
> > From: amsat-bb-bounces at amsat.org
> > [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Jim Jerzycke
> > Sent: April 5, 2009 1:18 PM
> > To: AMSAT BB; Sebastian
> > Subject: [amsat-bb] Re: Satellite Transceiver
> > 
> > 
> > IIRC, the IF-232 is just a simple TTL-to-RS232 interface. 
> it should be 
> > fairly easy to homebrew on with any of the available chips 
> out there, 
> > like the Maxxim MAX232.
> > jim  KQ6EA
> > 
> > 
> > -
>