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Re: [Amps] T/R relay

To: amps@contesting.com
Subject: Re: [Amps] T/R relay
From: Steve Thompson <g8gsq72@gmail.com>
Date: Thu, 26 May 2011 22:45:24 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
I've used similar types at VHF with bits of capacitance to tune 
out the inductance of the internals but found them too touchy at 
UHF. There's also the issue of skin effect and how plating behaves 
at higher frequencies.

For just a few $ you can get relays like Omron G6Y/G6Z which are 
rated for 1 or 2GHz. I can't recall part numbers but I'm sure some 
  of them (maybe Siemens/NAIS/Aromat brand) are rated for 10 or 
20W at UHF.

Steve

> I need to build a T/R circuit for my 70 cm (432 Mhz) amp.  For the output 
> relay 
> I've got a tohtsu CX-800.   I need to find something to switch the exciter.  
> I 
> have a bunch of RTE24012F relays and was thinking about using one for the 
> exciter which should only ever see 30 watts max.  These seem to work OK at HF 
> as I used them for a solid state amp a few years ago. 
> 
> 
> 
> Has anyone used these at UHF before?    Any other recomended relays? 
> 
> 
> 
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