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[NHRC REPEATER CONTROLLERS]
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Modification Articles for NHRC Controllers

A feature comparison chart of the various NHRC controllers   (offsite link)

PL and the NHRC-2 or NHRC-3 Controllers   A modification for allowing a PL decoder to be used.   by Kevin Custer W3KKC
PL and the NHRC-4 Controller   A modification for allowing an active-high PL decoder to be used.   by Kevin Custer W3KKC
PL only during COS with the NHRC-3/M2 and the TS-64   Allowing keyed encode with reverse burst   by Kevin Custer W3KKC
PL only during COS with the NHRC-4/M2 and the TS-64   Allowing keyed encode with reverse burst   by Kevin Custer W3KKC
PL only during COS with the NHRC-4 and the ST-139   A GIF image showing keyed encode with reverse burst   by Eric Vincent VE2VXT
A COR inverter (local copy)     Original location at the NHRC web site     Some of the controllers (like the NHRC-5) do not offer a low-going COR signal imput (i.e. they only accept a high-true input). This circuit when placed in front of the controller will fix that.

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This page originally posted on 11-Dec-2006

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.