On 8/6/2010 3:20 PM, Carl wrote:
> I thought the Emtron DX3 and 4 were the Aussie national amp(-;
>
They are manufactured there, but sold "out of country".
You missed the DX-5 which uses the 4CX5000R with a separate 3 phase PS
and the DX-2sp which makes a good US legal limit plus overhead amp.
The DX-3sp and DX-4 are for when you have to use those long runs of coax
or have trouble with ice..or birds on the antennas. <:-))
For the timid/economy minded they also have the DX-1sp which is 1KW
nominal output and FCC approved.
73
Roger (K8RI)
> Carl
>
>
>
>
>
>
>> 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@jeremy.mv.com>
>> Sent: Friday, August 06, 2010 8:33 AM
>> To: "Paul Christensen"<w9ac@arrl.net>;<amps@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@arrl.net>
>>> To:<amps@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@arrl.net>
>>>>> To:<amps@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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