[Amps] Relay suggestions please

[Carl]

The rather common 10-13A contact DPDT or 3PDT relays have held up fine in 
many amps for 30-40 years with no problem.

Isolation isnt the greatest at 10M but that wont bother a transceiver. Add a 
30-33pf disc ceramic from the bypass side to ground to cancel the XL and 
resultant VSWR at 10M.

Carl
KM1H


----- Original Message ----- 
From: "Ed Heimbach" <supermechanic18360 at yahoo.com>
To: "Pete Smith N4ZR" <n4zr at contesting.com>
Cc: <amps at contesting.com>
Sent: Friday, March 09, 2012 7:18 AM
Subject: Re: [Amps] Relay suggestions please



The common Bosch-style 12volt 30 amp automotive relay has been used to a bit 
of success. They are available most everywhere.
73, AB3HT
--- On Fri, 3/9/12, Pete Smith N4ZR <n4zr at contesting.com> wrote:

From: Pete Smith N4ZR <n4zr at contesting.com>
Subject: Re: [Amps] Relay suggestions please
To: amps at contesting.com
Date: Friday, March 9, 2012, 5:07 AM

Steve, you might want to take a look at the PCB relays used by Inrad in
their antenna switches. IIRC, they have been tested to 1.5 KW
continuous, 30 MHz and at 3:1 load SWR, and the last time I bought some
they were $2 each. Amazing. W2VJN did the design and test.

73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
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On 3/9/2012 3:38 AM, Steve Thompson wrote:
> I'm looking at a lower cost alternative to a switching system that
> currently uses coaxial relays. Frequencies up to 30MHz, powers in
> the region of 1kW and continuous carrier has to be catered for,
> but no hot switching.
>
> Any suggestions for open frame or pcb types with a track record in
> amplifier products?
>
> Thanks, Steve
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