Colin Gibson
Member
- Joined
- Jun 27, 2004
- Messages
- 192
- Location
- Nelson New Zealand
- Aircraft
- Sparrow Hawk ZK RCU
- Total Flight Time
- 142.6
I have an Amptronic GX2 in my Sparrow Hawk and have found that the altimeter drops 200 ft when I transmit on the Tower Frequency here of 129.4 If I transmit on the uncontroled air space frequency of 119.1 the GX2 does not drop the altitude. This also occurs on the ground with the engine running.
I have tried other frequencies above 120 with the same efect
I also have a transponder but it doesn't affect anything.
The radio is an XCOM 760 attatched to a ground independent dipole aerial from Mobile One which is mounted high and left rear of my cabin. I feel there is excelent separation from the other equipment.
I have E mailed Dan Banks and Amptronic in South Africa but have recieved no replies yet
Can anyone explain why the GX2 drops my altitude on the higher frequency please.
I have tried other frequencies above 120 with the same efect
I also have a transponder but it doesn't affect anything.
The radio is an XCOM 760 attatched to a ground independent dipole aerial from Mobile One which is mounted high and left rear of my cabin. I feel there is excelent separation from the other equipment.
I have E mailed Dan Banks and Amptronic in South Africa but have recieved no replies yet
Can anyone explain why the GX2 drops my altitude on the higher frequency please.