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Re: [IRCA] coax loss
- Subject: Re: [IRCA] coax loss
- From: Russ Edmunds <wb2bjh@xxxxxxxxx>
- Date: Fri, 17 Aug 2007 04:02:57 -0700 (PDT)
--- Chuck Hutton <charlesh3@xxxxxxx> wrote:
> Garden variety RG6 runs 9 or 10 Ohms per 1000' of center conductor,
> so
> Patrick's 75' length really ought to have about .75 Ohms of DC
> resistance.
>
> I'd bet his meter is contributing to the "problem".
>
> A "problem" it isn't - an Ohm or two in series with his 50 Ohm input
> won't
> produce enough loss to be noticeable at all.
>
>
> Chuck
>
>
*** I agree with Chuck - the average meter has an error range greater
than what is being seen here. If you were using professional-grade
equipment, I'd bet you'd see lower readings. Also remember that those
readings are at double your length - out and back - and are also using
the shield as a conductor, which it isn't meant to be, so you could be
adding a bit of resistance in that way as well..
Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'
AM: Hammarlund HQ-150 & 4' FET air core loop
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