Dennis Crawley wrote:
> Hi I'm trying to make a transceptor with a "TX" and "RX" ASK 418Mhz modules.
> Is there any other way to switch the antenna?
> I did this "siwtcher" using DTR singal.
> http://www.geocities.com/proyectosenpic/movies/Schematic.PDF
> 
> A microcontroler will do the same.
> 
> I can't find tranceptors as cheap as WSH modules here in Argentina....
> The only ones costs 99U$S.
> 
> If somebody tell me that I can take away those reed switches I'll be glad.
> 
> 
> You can find a photo of this module here:
> http://www.geocities.com/proyectosenpic/movies/DSC00018.JPG
> 
> 
> Regards,
> Dennis Crawley
> Argnetina
> www.geocities.com/proyectosenpic
> ps:(opinions about "inverted pendulum" are also welcome)

Dennis,

If your modules' RF TX power is fairly low, a pin-diode switch might do 
the job for you.

A google search for "antenna transmit receive switch arrl" turns up lots 
of answers.

Try this one:
http://www.microsemi.com/literature/pinhandbook.pdf

They have all you should need to get rid of those pesky reed relays!

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