richdolby
Active Member
- Joined
- Jul 8, 2015
- Messages
- 33
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Hi, I had a new Trig radio fitted recently. The engineer who fitted it reported that initially he had a problem with an intermittent unprompted TX with the radio. He said that he'd fixed it, but couldn't identify exactly what the problem was.
I flew the aircraft a couple of times & then the problem resurfaced. I took a look at the install and wasn't entirely happy with it. I have now made a complete new loom (see photo) and the problem is still there.
When first switched on the radio seems fine, and responds to either P1 or P2 PTT correctly. Then after a minute or two these ghost unprompted 'TX' surface, and get steadily worse until the TX is almost continuous. The only other possibility is the P2 PTT switch that was added at the same time as the new Trig. I checked the switch with a circuit tester and it seems fine.
So, what could be the cause??
I flew the aircraft a couple of times & then the problem resurfaced. I took a look at the install and wasn't entirely happy with it. I have now made a complete new loom (see photo) and the problem is still there.
When first switched on the radio seems fine, and responds to either P1 or P2 PTT correctly. Then after a minute or two these ghost unprompted 'TX' surface, and get steadily worse until the TX is almost continuous. The only other possibility is the P2 PTT switch that was added at the same time as the new Trig. I checked the switch with a circuit tester and it seems fine.
So, what could be the cause??
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