I have a raddioddity DB25-G unit in my truck. I’m using an NMO mount that attaches directly to the fender using the existing bolt inside the engine compartment. I have a Tram 1126-B antenna. I’m using a surecom meter.
My first test showed SWR of 1.5:1 on channels 1-7, 2:1 on channels 15-21, and greater than 3:1 on repeater channels. I took the mount off and removed the star washer that came with it and reattached the mount then tested again.
My second test showed SWR of 1.01:1 on channels 1-7, 1.45:1 on channels 15-22. I’m good with that. However, on repeater channels the SWR was 2.84:1. Any suggestions on how to get that SWR down?
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WSDT708
I have a raddioddity DB25-G unit in my truck. I’m using an NMO mount that attaches directly to the fender using the existing bolt inside the engine compartment. I have a Tram 1126-B antenna. I’m using a surecom meter.
My first test showed SWR of 1.5:1 on channels 1-7, 2:1 on channels 15-21, and greater than 3:1 on repeater channels. I took the mount off and removed the star washer that came with it and reattached the mount then tested again.
My second test showed SWR of 1.01:1 on channels 1-7, 1.45:1 on channels 15-22. I’m good with that. However, on repeater channels the SWR was 2.84:1. Any suggestions on how to get that SWR down?
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