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Old October 29th 07, 02:25 PM posted to rec.radio.amateur.antenna
The Shadow[_2_] The Shadow[_2_] is offline
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First recorded activity by RadioBanter: Aug 2007
Posts: 147
Default Cushcraft R5/R7 Matching Network (MN-7) Rebuild


"Jimmie D" wrote in message
...

"gb" wrote in message
. ..
This article describes how to rebuild a matching unit of a Cushcraft R5
vertical -- by --G0WCW

http://www.mrs.bt.co.uk/mrs/r5/

Nice work!
http://www.mrs.bt.co.uk/mrs/r5/DSCN2478.JPG
Enclosure

The box is from maplin, product number YM91Y and is one of their 'IP
enclosure' range. The box is 150 x 110 x 70mm in size (product codes
YM91Y - grey, YM93B - grey with clear lid). Cost is around six UK pounds.

It is physically the same size as the Cushcraft variant, but the PCB has
to be slightly 'nibbled' at the corners to get it to fit inside the newer
box. I'd say the original Cushcraft enclosure isn't that good as they
used steel screws into brass fixings. The screws rust over and then shear
off. In my view, the Maplin IP enclosure is a better solution to outdoor
use (IP56 rated).




Anyone have a schematic of the matching network. I have two antennas and
both are missing the box.


Jimmie


See URL:
http://www.pa0fri.geerligs.com/

Click on ANT, then green dot next to Cushcraft R5, maintenance and repair

Lamont - The Shadow Knows