Can I use RG6 20 Gauge?

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Thayne

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I would say not much difference, don't do it at all unless it is for receiving only and you are listening to 700-800 stuff.
 

GTR8000

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That's not 20 ohm, it's 20 gauge.

Looks like a spool of Belden (not Belkin) 7503A, which is 75 ohm RG6 with 20 gauge stranded center conductor. You're really better off with solid center conductor for a run of any length over 10' or more. That being said, RG6 is very good for receive-only applications, and yes it would definitely be better than RG58, which is very lossy, especially 50' worth.

Since you already have the RG6, give it a try, you really have nothing to lose.

Also the "impedance mismatch" means absolutely nothing for receive-only wideband. It adds no measurable loss across the frequency range a scanner can tune to.
 
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