…as promised. Sorry about not posting it on Monday, but thanks to Patricia for reminding me. This mod will prevent the transmitter bias from being turned on while the firmware is updated. The red LED will still come on, but that isn’t a problem. Also, there’s no reason to do this if your radio is a receiver only.

Install a 10K (approximately, the one I used is a 9.76K because it was within arm’s length) resistor, 1/8 watt preferably (because it’s small, no significant power will be dissipated) on the top side of the transmitter board a shown in the photo:

Obviously, I’m not calling it the “top” side because it’s the component side. It’s the side that faces up when the transmitter board is installed on top of the receiver.Make sure the resistor’s leads are formed so they don’t touch anything but the two pins, and make sure you don’t create any solder bridges.

Again, this is a pulldown resistor that will keep that pin from floating up from ground potential when it first comes up in its reset state.

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