Emtech have been offering this Z-Match tuner for years: https://steadynet.com/emtech/zm2-prebuilt-bnc-connectors
I have one but don't use it since I went to a pre-tuned 3 band trapped EFHW for outdoor QRP work.
The nice thing about the Z-match is it does match pretty much any TX to pretty much any antenna. I once plugged a 5/8 telescopic antenna for 2m into the BNC socket and tried to tune it up on 80m. I got a match.
It's also good for doublet antennas which are good practical antennas for the field.
I have one but don't use it since I went to a pre-tuned 3 band trapped EFHW for outdoor QRP work.
The nice thing about the Z-match is it does match pretty much any TX to pretty much any antenna. I once plugged a 5/8 telescopic antenna for 2m into the BNC socket and tried to tune it up on 80m. I got a match.
It's also good for doublet antennas which are good practical antennas for the field.