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Re: Topband: Relays in RX array

To: <topband@contesting.com>, "Pete Smith" <n4zr@contesting.com>
Subject: Re: Topband: Relays in RX array
From: "K9AY" <k9ay@k9ay.com>
Reply-to: K9AY <k9ay@k9ay.com>
Date: Wed, 22 Mar 2006 09:59:03 -0600
List-post: <mailto:topband@contesting.com>
> Tom wrote:
>
>> I use regular 1-2 amp sealed DIP relays, and never once have
>> had a problem despite having dozens of relays in the signal path.
----------

Agreed -- and as an additional note, many relays are designed for a slight 
wiping action as they make contact.  I use the Tyco (OEG) OMI series for 
this reason -- they are sealed and have wiping action.  I use the OJE series 
for SPST switching.  You might think relays with 5 to 10 amp ratings are 
overkill for receive -- and you'd be right!  I use them because they are 
cheaper than the lower-rated types.

Equivalents include the OMRON G2R series and Tyco (Potter & Brumfield) RT 
series.  I think the Magnecraft 976 series is also the same, and I've seen 
other brands using the same physical construction.

When in doubt, buy a sample and cut it open -- that's what I did when 
evaluating relays for my equipment.

73, Gary
K9AY

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