On Sat, 21 Nov 2009 18:56:07 +0100, "Ronald" wrote:


It started when the dummyload was too small for a job. It's for 40 mtrs.
But making it is barely possible. It should have a Zo of 50 ohms ? And what
about the Q factor ? Looking on my swr meter it gets better when i put my
hands near it and at a very small C rate but still in the red.
Anyone ?

Hi Ronald,

If you mean by "dummy load" something with a 50 Ohm match and
resistive (somewhat redundant to the 50 Ohms) then it has to be a
resistor (department of triple redundancy).

Finding a resistor that is sufficiently power rated is not a simple
(cheap) chore. Making your own will take time and ingenuity.

Consult:
Caddock Electronics, Inc.
17271 North Umpqua Hwy
http://www.caddock.com

for resistors that will fill the bill - once you build the heatsink.

73's
Richard Clark, KB7QHC