Fw: [AMRadio] Dummy Load


W6OM w6om at cox.net
Thu May 15 18:01:26 EDT 2008


> Rick
>
> I use a Navy Surplus Bird Professional Broadcast Dummy Load with a built 
> in watt meter rated at 1KW forever.  I use it frequently to tweak the 
> Gates BC-500T for 160 meters or the Bauer 707 for 75 meters.
>
> There are numerous surplus houses around the country that sell them and 
> depending on your pocket book can range from $250 to $1,500.  I paid 
> $289.00 for mine last year and it runs cool when I put either one of the 
> Big Boxes into it.
>
> Email me directly and I'll send you a digital photo, P/N and the name of 
> the place I bought it.
>
> All the Best
>
> Ron Weaver  W6OM
>
> www.qsl.net/w6om
>
> www.california-am.com
>
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> ----- Original Message ----- 
> From: "Rick Brashear" <rickb at tx.rr.com>
> To: "'Discussion of AM Radio in the Amateur Service'" 
> <amradio at mailman.qth.net>
> Sent: Thursday, May 15, 2008 11:34 AM
> Subject: [AMRadio] Dummy Load
>
>
> I know this has been beaten to death many times, but for the sake of an 
> old
> man with a bad memory could we discuss the most economical (very 
> important)
> way to provide a dummy load for testing a broadcast transmitter.  I have a
> few Cantennas, but they get hot real quick at 1000 watts and I'd like
> something I could be a little more confident in.  If I were to use the
> proper number of series/parallel non-inductive resistors at say 100 watts
> each, what kind of support system would be best to insure at least a one
> minute key down time?  Would immersing them in oil or attaching them to 
> heat
> dissipating metal with a blower be the better choice?
>
>
>
> Thanks for any and all advice you may offer..
>
>
>
> Rick/K5IAR
>
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