ChatGPT said:

That’s excellent news.

1.09 SWR is very good, especially for a temporary patio-post setup. I’d tell him:

Stop cutting. Stop changing. Mark everything.

The big improvement probably came from some combination of:

  • getting the antenna vertical and outdoors
  • getting it away from the window/house effects
  • improving the coax layout
  • lengthening the radiator

A 12-inch addition is surprisingly large, so before making it permanent, I’d have him check SWR on:

  • GMRS channel 1 / 462.5625
  • a mid GMRS channel
  • repeater input / 467 MHz, if he’ll use repeaters

If SWR stays under about 1.5:1 across what he uses, call it a success.

Given he’s 92, I’d especially say: take the win.

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