[amsat-bb] 24GHz stuff

[Mike Kana <cosmo224@xxxxxxxxxx>]

Greetings all

The 2000 proceedings for Microwave Update has some very good articles on

using surplus 22-23ghz down converters made for digital data links.  IF
frequencies
are in the 1 to 3 ghz range and the LO is half the operating frequency.
A 3456 IF
would require a 10368Mhz LO source.  Other IF's would call for 11 to
12ghz
bricks or possibly use a Qualcomm multiplier fed with a 2.X ghz
oscillator.  Refer
to the San Bernadino Microwave Society web page on converting the
Qualcomm
mult as well as other very useful conversion articles.  I think Electro
Mavin
(source for those 2.4ghz hair pin filters) was selling harmonic mixers
at Update
last year that worked at K band.  Update this year is in Silicon Valley
which
is the Eldorado of cool microwave surplus junk.  Im sure K and Ka band
will
be well represented at the flea markets.

73 de AA9IL
Mike

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