Getting the best results!

[abcd567]

@SDMark

I’ve got my antenna on the roof and have connected it down into the house using about 25 feet of RG-6 (75 Ohm) TV/Cable coax, and then I have a TypeF/SMA adapter to connect to the ADSB Dongle. Based on other posts here (and elsewhere on web) it seemed like the impedance mismatch when the cable reached dongle and changed from 75 Ohm to 50 Ohm wasn’t a big concern - as long as it’s in a Rx situation (for Tx the reflected energy is large enough to cause issues). It didn’t occur to me there’s also a potential for a mismatch at the start of the cable, where the antenna plugs in.

Your views are logical and practical.

You may like to brows following post:

Spider Antenna - How Tilt of Radials Affects Impedance and SWR