If there is not a speaker or load attached to the speaker leads, it will make funny noises in the audio.
Gerald Pelnar WD0FYF McPherson, Ks ----- Original Message ----- From: Jim Brown To: [email protected] Sent: Friday, September 12, 2008 6:22 AM Subject: [Repeater-Builder] NHRC-3/M2 Processor Noise I posed this question to the NHRC Group with no response. I wonder if someone here has an answer? I have a NHRC-3/M2 controller installed in a Mastr II mobile and have had it in service for several years. It has a high frequency noise or whine that I can hear and shows about 200 Hz deviation on the service monitor. I am wondering if there is a ground strap that can be added either to the board or to the radio that will reduce this noise. I have the audio amp disabled so that is not the source of the noise. I am just returning this controller to service and would like to reduce or eliminate this whine. Maybe some kind of rebalance of the audio levels is possible to help? 73 - Jim W5ZIT
