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Comprehensive modification to the GE MASTR II Station 10 Volt regulator card for duplex (repeater) operation
By Kevin Custer - W3KKC

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Concept:
This modification article was out of necessity, as none of the ones I found on the Internet were complete.
This article will ensure your station will not mute when the transmitter is keyed.

Modification:
Cut out C23.   Refer to the photo below - click for larger image:


Cut H16 to H17.   Refer to the photo below - click for larger image:


Make sure H19 to H18 is installed.   Refer to the photo below - click for larger image:


Install H1 to H2 and possibly H9 to H3.   H1 to H2 can be a simple jumper, or you can run wires to a switch on the front panel. (optional).
H9 to H3 needs jumpered if you are using the OEM channel guard encoder.
Refer to the photo below - click for larger image - your browser may give you the option to magnify again (click image yet again).



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This page originally posted on Saturday, March 7th, 2015

Photos and article text © Copyright 2015 by Kevin Custer - W3KKC
Photo annotation by Robert W. Meister - WA1MIK
Artistic layout and hand-coded HTML by Kevin Custer - W3KKC and is © Copyright 2015 and date of last update.

This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.