What you need is a standard Piston attenuator whose performance is
largely calculable. Forget about dinky wire-ended resistors whose
performance in attenuators is a matter of guesswork.
----
Reg.

====================================

"Gary Smith" wrote in message
...
Hi, i would like to build a variable attenuator for 450-500MHz. It
will be
used for RDF assistance.
Could people please give me construction details of different
designs or
different ideas on the topic.

I woould love an electronic RDF unit but havn't found many kits here
in
Australia so an attenuator will be
a good start.

Thanks


Gary