A while back my SL30 went tango uniform. Took weeks to get it repaired. Had a bad nav circuit board and a couple of other things.
The avionics shop said it was extremely remote that my installation had caused it. Nonetheless, I painstakingly went thru every pin out and connection on the SL30, the CDI it was hooked to, the intercom pin outs, the PTT, and checked the nav and com wiring and coax. No shorts, good continuity,etc.
Well I put the repaired radio back in for a test, with the engine off and only the navcom system turned on. I can now transmit and my helper can hear me on a handheld, 5 x 5. However, I am picking up every unwanted frequency in my headset. I can hear AM radio stations, CB or ham radios, a huge amount of static, the squelch doesn't work and the reception from the dialed-in frequency is poor.
I must have an antenna or wiring system problems somewhere and obviously picking up unwanted RF. How do troubleshoot this further?
Dave A.
The avionics shop said it was extremely remote that my installation had caused it. Nonetheless, I painstakingly went thru every pin out and connection on the SL30, the CDI it was hooked to, the intercom pin outs, the PTT, and checked the nav and com wiring and coax. No shorts, good continuity,etc.
Well I put the repaired radio back in for a test, with the engine off and only the navcom system turned on. I can now transmit and my helper can hear me on a handheld, 5 x 5. However, I am picking up every unwanted frequency in my headset. I can hear AM radio stations, CB or ham radios, a huge amount of static, the squelch doesn't work and the reception from the dialed-in frequency is poor.
I must have an antenna or wiring system problems somewhere and obviously picking up unwanted RF. How do troubleshoot this further?
Dave A.