Bill,
I have not heard it discussed here, but I made a little 'jig' with a series 50 ohm carbon resistor sandwiched between
a male and a female coaxial connector (made one for PL259/SO239 and N-male/bulkhead N-female).
You use your standard 246/f * Vf, but make it a little longer than you think.? Short the far end for even half-wave
multiples, leave open for 1/4 wave, 'TUNE' coax by highest return loss/lowest swr.
This is how I tune the coax for transformers (odd multiple of 1/4 wave) or feed lines for an array (even half wave).
I suppose this could be "fun" trying to do this with sma on the Nano!
73
Glen K4KV
ps - there are other iterations, by doubling or halving the target frequency...
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On 3/31/2020 15:10, Bill wrote:
Has anyone used the nanovna to make tunes coaxial stubs? I was thinking you'd need to get rid of the jumper which would add length to the overall stub. I picked up an SMA to SO-239 connector which hopefully would do away with the extra cable.
Anyone have any tips for this?
Thanks
Bill K4FX
