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SmartSDR v3.8.21 and the SmartSDR v3.8.21 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
Power Genius XL Utility v3.8.9 and the Power Genius XL Release Notes v3.8.9
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
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TG XL and Antenna Genius 8X2

Mr Radio
Mr Radio Member ✭✭
in Peripherals & Station Integration

I consider connecting these two using two lengths of quality coax about 1 meter each.

My concern is about possible SWR increase. or other potential problems.

Is there a suggested coax length, or lengths to be avoided?

Tom

Best Answer

  • John KB4DU
    John KB4DU Member ✭✭✭✭
    Answer ✓

    As long as not doing VHF/uhf, those lengths are an insignificant fraction of a wavelength on hf. If the coax and connectors are good quality, there should be no issues.

Answers

  • KM4CQG
    KM4CQG Member ✭✭

    no issues have tried equal and different length cables between these devices

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    SWR is always vary along a feedline if you are not using an antenna that is 50 ohms and 100% resistive. This is to be expected.

    You will see a bit of a variance in SWR, but this is normal. And, high SWR is not the evil thing that all hams seem to be afraid of. Yes, it needs to be managed, but anything under 2:1 is considered normal.

    I ran my PGXL for years into SWR up to 2:1 all the time without issue. Also, low SWR is not a guarantee of how well an antenna will actually radiate.

    tldr; you’ll be fine with any length of quality cable.

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