Dan, When a Micor station is equipped with a PL tone decoder, such as the TRN6002A, a high-pass filter is inserted into the audio chain which blocks any frequencies below about 300 Hz. Since the PL tone can cause problems if it is allowed to pass through the receiver audio chain, it is usually filtered out and regenerated later. If you need to detect an incoming PL tone with an outboard decoder, you will need to use flat (discriminator) audio prior to de-emphasis.
73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Daniel M LePage Sent: Tuesday, March 06, 2007 10:07 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor Repeater can not use TS-64 I have a Micor repeater that I can not get the CTCSS tone through the receiver. I can get a good 1 kHz tone but when I try and put a CTCSS tone through the receiver it is broken up. I did not convert this Micor and it will operate as a repeater with out a CTCSS tone. It does have a circuit that says "RX audio out (White) has a about a 6 dB notch at 100Hz". I take it this is what is causing the problem. Can someone point me in the right direction on this one. 73's Dan /WA1OOH
