[NLRS] WR-75 waveguide parts

Douglas H Reed n0nas at amsat.org
Fri Mar 25 11:46:28 EDT 2011


Does anyone need some WR-75 waveguide parts? I got an assortment of
stuff from a local source and thought maybe somebody could use some
bits and pieces.

Two items are from MDL Labs, one item looks like a 4 port power
combiner and is labeled MDL DIE 122. Can't find it on their web site
but the closest pictures are of power combiners. The other looks like
a high power attenuator. It has no part number but is about 9" long
and has heat dissipating fins down the sides and and a series of small
slots in the wide side of the waveguide under the fins. I don't know
what the ratings are but they were in high-power 14GHz amplifiers.

I have several of each in case anyone can figure out a use for them.
If nothing else, the flanges are 1/4" thick. If nobody has use for
them, they will go for scrap metal. Worst case, you could cut the
flanges off to make a coaxial launcher, if anyone is still thinking
about using waveguide...

I have some other WR-75 waveguide and modules that I haven't even
sorted through yet but it includes bends, straight sections, and
various ferrite isolators and such. If you are trying to build
something with waveguide, let me know what you are looking for and
maybe I have it. Sorry, no waveguide switches that I've seen yet....

There are some microwave bricks in the other stuff I'm stripping but I
haven't tried to inventory any of it yet.... Can't think of anything
to do with the 10 watt 6.5-7.5GHz power amp either..... It will not go
down to 5.7GHz....

I hope to be at the hamfest tomorrow, the breakfast in two weeks, and
of course at Aurora in May.....

73, Doug Reed, N0NAS.


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