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Re: [Amps] Automotive Relays

To: <amps@contesting.com>
Subject: Re: [Amps] Automotive Relays
From: "Dave Hachadorian" <k6ll@arrl.net>
Reply-to: Dave Hachadorian <k6ll@arrl.net>
Date: Tue, 3 Aug 2010 13:54:42 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Below is some info from W2VJN on inexpensive relays for RF. They 
are available for $2.43 each here:
http://parts.digikey.com/1/parts/747811-relay-pwr-spdt-10a-12vdc-pc-mnt-jw1fsn-dc12v.html

Dave Hachadorian, K6LL
Big Bear Lake, CA


> The relays which we use in the Top Ten Devices boxes are 10 
> amp,
> sealed power relays.  They are very small and have very low
> inductance.  The contacts are connected to the base pins with
> wide conductors.  I have run many power tests on these relays
> and the pc boards they are mounted on with temperature monitors
> and they will take full amateur power (+) to over 30 MHz.  We
> rate our boxes conservatively at 1.5 KW.  The part number is
> JW1FSN-DC12V.  They come with several different brand names on
> them.  Similar relays are being used by other manufactures of
> amateur boxes and they rate them variously at 3 KW and 5 KW.
>
> George, W2VJN
 

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