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" <[EMAIL PROTECTED]> wrote: > On 5/1/06, Rick Brashear <[EMAIL PROTECTED]> 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:[email protected] > 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
