That looks more versatile than my PROG 4 setup which needs an adjacent computer and me transporting the loco down the garden to get to the shed, it usually rains!.
A Tx-20 would be good value compared with the cost of a PROG 4 and USB serial adapter cable. I might even be able to build it myself.
Question - will binding a RX-??-22 with Selecta variant to the TX-20 cause any problems?
On David T's suggestion I have been using an eFlite MLP4DSM for programming. It was inexpensive and works well but programming some of the higher functions that require 12 "clicks" gets tiresome. At least I don't have to do it too often!
____________________ Monorail modelers have a one track mind.
I have used a two stick transmitter for programming in the past but now use a Prog 3 which works for me. You set the code you want in the Prog 3 memory then transmit it to the receiver. It's a lot easier than the two stick system as you can correct errors before you transmit the code to the RX.
Dave, I agree that Tx20 is appealing. Or make a simpler version. By default Ch2 is centered with Tx20 which should be Selecta position 6. It would be most convenient if that position was dedicated to the Tx20. Position 6 is also what my test transmitter uses so it would replace that which is also a good choice.
Prog4 can be a problem if you are running Windows 10 as a lot of the serial port emulation USB adapters use an older chip set which Win10 does not recognize. My adapter did this-aargh!
Why? when Win10 switches on it checks for the latest driver and loads it. Of course this disables your serial adapter which uses an older driver. I found a little utility which loads the correct driver and instructs Win10 NOT to update that driver. It works fine except sometimes after a Win10 system update I have to run the utility again.