[AMRadio] Dummy Load


Bob Macklin macklinbob at msn.com
Thu May 15 17:01:15 EDT 2008


We used to use a couple of aluminum plates in a bucket of salt water.

Bob Macklin
K5MYJ
Seattle, Wa,
"Real Radios Glow in the Dark"

----- Original Message ----- 
From: "Jim Wilhite" <w5jo at brightok.net>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Thursday, May 15, 2008 1:35 PM
Subject: Re: [AMRadio] Dummy Load


> 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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