[Amps] Automotive Relays

[Carl]

I'll have to give those a try, I want to experiment with some 6M antenna 
phasing. The 12V coil may be a problem in a very long run, probably have to 
dial back a 24V PS.

Carl
KM1H


----- Original Message ----- 
From: "Paul Christensen" <w9ac at arrl.net>
To: <amps at contesting.com>
Sent: Tuesday, August 03, 2010 5:37 PM
Subject: Re: [Amps] Automotive Relays


> Although not strictly an "automotive" relay, W8ZR has conducted extensive
> tests on the Tyco/Shrack RTB14012, available for USD $1.80 ea. from Mouser
> Electronics:
>
> http://www.mouser.com/Search/Refine.aspx?Keyword=RTB14012
>
> Jim is using these relays for high-power 1.5KW+ switching in his new
> StationPro controller.
>
> http://www.w8zr.net/stationpro/index.htm
>
> He's seeing some very low loss and VSWR numbers up through 6m, with decent
> performance through 2m.  Not bad for a $1.80 PCB sealed power relay.  I
> believe Jim has tested another similar relay with even lower loss in the
> same price class.
>
> Paul, W9AC
>
>
>> ----- Original Message ----- 
>> From: "Dave Hachadorian" <k6ll at arrl.net>
>> To: <amps at contesting.com>
>> Sent: Tuesday, August 03, 2010 4:54 PM
>> Subject: Re: [Amps] Automotive Relays
>>
>>
>>> 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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>>>
>>
>>
>
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