On Tue, Aug 29, 2023 at 02:27 PM, Evan Hand wrote:
An alternative is an SWR indicator based on the same resistor setup.? Here is one from QRPGuys:
Has anyone tried replacing the switch with a relay and worked out a "tune button" (or tune output) that would pull this into the circuit for ## seconds, then release it?
It seems this kind of thing could then be built into the firmware of transmitters like the U3S (or unattended modes of about ay radio) to activate an output for ## seconds before transmission.
This output could then be used to:
? ?a) Switch in the tuning-indicator
? ?b) Activate the auto-tuner (in cases where it requires an input rather than RF sense)
? ? ? ?NOTE: some may not like the input "ON" for that long.???I am thinking of tuners like the LDG Z-100.
Anyway, the first step would be an output that can start the process.
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Rob KB8RCO
