The NHRC-2 is polarity independent for COS... I've built & installed 3 of them.
It uses an optoisolator with both inputs floating, so it can be used for either positive- or negative-going COS as well. 73, George, KA3HSW / WQGJ413 ----- Original Message ----- From: John To: Repeater-Builder@yahoogroups.com Sent: Friday, July 04, 2008 9:38 AM Subject: Re: [Repeater-Builder] TKR 820 The COR signal is opposite. I had to use a transistor invertor circuit to use with the NHRC-2. Then we got an NHRC-7 which has a pos or neg COR switch and that solved it John -- John Mc Hugh, K4AG Coordinator for Amateur Radio National Hurricane Center, WX4NHC Home page:- http://www.wx4nhc.org [EMAIL PROTECTED] wrote: >does anyone have a controller model they can share as I have been working >with a nhrc controller and don't seem to be able to get it to key the >repeater. >also using rus instead of cor, didn't see a cor signal on this repeater ? >suggestions welcome... >N9ex >
