Re: External amplifier control for U3

Phil Frost <indigo@...>

The U3S brings PB5 out to a header just for this. Check out the operating manual for the latest firmware and search the document for "amplifier":

I don't know if the U3 has the header connection, so maybe you just need to scab on a wire some other way.

On Sat, Jun 6, 2020 at 2:36 PM Manuel Verde Salmerón <ea7tb@...> wrote:
I have ultimate U3, plate "Rev 2".
I want to put an external applicator to increase the output power
First I'm going to do the transformation to go from U3 to U3S. (Https://
When making this modification, the microprocessor's PB5 signal is not used.
Can this signal be used to activate an external amplifier?
How else could it be done?
Manuel EA7TB

Join to automatically receive all group messages.