[Amps] Automotive Relays

[Jeff Blaine]

Carl,

That relay is available in a 24V version.  And there's a 16A contacts rating 
option as well which may be the better choice especially if a guy is running 
at the full AUS/NZ-400w power level instead of the domestic 1500w power 
level.

73/jeff/ac0c
www.ac0c.com


--------------------------------------------------
From: "Carl" <km1h at jeremy.mv.com>
Sent: Friday, August 06, 2010 8:33 AM
To: "Paul Christensen" <w9ac at arrl.net>; <amps at contesting.com>
Subject: Re: [Amps] Automotive Relays

> 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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