On TH-F7 transceiver, the “Service Menu” is accessible only by opening the transceiver. The “Service Menu” contacts are shown in the following picture, close to the “1” and “4” keys.
It is obviously that this design is not very flexible for “daily” use. Maybe this is why people are not (yet) playing too much with “Service Menu” on this transceiver.
This is why I decided to build an external switch for “Service Menu”. My best idea was a Reed switch. I bought the smallest one (thanks Good I got two of them ;-) and I started “the best place for Mr. Reed chase”. In the process, one Reed switch died ;-)
The best place I have found is shown in the next picture:
All you need is two pieces of thin wire and one small Reed switch. After the case is closed, entering the ”Service Menu” is done using a small magnet (from about half inch distance).
Using this solution I was able to play with “Service Menu” and find the
“low modulation problem” fix.
I also think the power level on battery will be interesting to “recalibrate”. I’ll be back in a few days with results…