[AMRadio] Dummy Load


Mark Foltarz Foltarz at rocketmail.com
Tue May 2 09:44:39 EDT 2006


Resistor bank out of a Gates 1T comes to mind.
An oil bath would  certainly give the extra thermal mass to go the distance for
checking a 3 KW output.

de KA4JVY
Mark


--- "Todd, KA1KAQ" <ka1kaq at gmail.com> wrote:

> On 5/1/06, Rick Brashear <rickbras at airmail.net> wrote:
> > Does anyone have a nice hefty dummy load capable of 2kw - 3kw they would
> > like to sell or trade?  I need something capable of  handling a 1000
> > watt carrier for more than a few seconds.
> 
> I'd suggest checking with the guys who know of, or are parting out
> some of the big old AM transmitters. Gates and probably others used to
> have a built-in dummy load consisting of a large board or panel
> covered with hefty non-inductive resistors. Even a 1KW version would
> probably work alright for 2-3KW if you added some forced air cooling
> by fan - provided you don't plan on leaving it keyed up for a long
> period of time. I have one here that is rebuilt into a metal
> enclosure, and actually managed to get it warm for the first time this
> past weekend when W1UJR was over at my place helping to get things in
> order. We were dumping a KW-input rig (750w or so) into it for
> extended periods, and it handled it fine with no help from a fan.
> 
> de Todd/'Boomer'  KA1KAQ
> ______________________________________________________________
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio at mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 



More information about the AMRadio mailing list

This page last updated 22 Oct 2017.