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Re: Circular Polarity



At 00:16 30/12/2000 +0000, Frederick M. Spinner wrote:
>
........
>
>MMDS antennas are very tempting to try for Mode-S and are linear.
>
>Hey, has anyone else ever tried a MMDS converter other than a Drake
>2880?  It'd be good to find a cheap replacement.
>
>Fred W0FMS
>_________________________________________________________________

Hi Fred
CX6DD use one of California Amplifier. See please his page for description
http://chasque.chasque.apc.org/franky/mmdseng.htm
In Brazil PY6ASV is using the model 130-194 of California Amplifier:
http://www.calamp.com/ . He has bypassed the output IF filter and receive
at 122 MHz. The next pass is to change the crystal to bring the
downconverted frequency to the range of 145-146 MHz.

Rogerio, PT2TD
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