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Old July 11th 05, 02:46 PM
JB
 
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Use a length of lossy coax for only 3 db. A lot cheaper. None of
the non-inductive wirewound or laser cut resistors will be truly non-
inductive at those frequencies. Realize that the values need not be
exact, because return loss will keep the SWR down. If you can't get
Carbon, Use the coax. You might also want to adjust Drive or ALC in
the amp.

The Collins 30L-1 used to come with a length of lossy coax for this
reason.

ac6tk
http://tekstuff.freespaces.com

"KC4IH" wrote in message
...
I need to build a 3db pad, 50 ohm, 10 watt, to reduce the drive to

my 6
meter amp. I need 2 X 300 ohms and 1 X 18 Ohm resistors and thought

it would
be an easy matter to find them with enough current rating to do the

job but
can't find anything larger than 1 watt carbon (not film, which are

somewhat
inductive ) resistors. I can find want is called non-inductive wire

wound
resistors. I can't understand how a wire wound resistor can be
non-inductive. Could someone explain this?