[AMRadio] Dummy Load


Jim Wilhite w5jo at brightok.net
Thu May 15 16:35:57 EDT 2008


Just wet one finger and touch the antenna port then grab the cabinet 
with the other
----- 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 1:34 PM
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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