> -----Original Message-----
> From: towertalk-bounces@contesting.com [mailto:towertalk-
> bounces@contesting.com] On Behalf Of Jim Brown
> Sent: Thursday, February 11, 2010 6:49 PM
> To: Tower and HF antenna construction topics.
> Subject: Re: [TowerTalk] Measuring Coax Loss
>
> Todd asked:
>
> > Tell me again how I can productively use the more precise information
> [0.6
> > versus 0.62 dB loss in 208 feet at 3 MHz.] in constructing my antenna
> feed
> > line system.
>
> That's my point. If you're measuring a long piece of cable at a
> hamfest, the
> MFJ is plenty good enough. If you're measuring a 10 ft piece of cable
> but
> want to know how it would work on a very long run, especially at low
> frequencies, you need the greater precision of the HP setup.
>
> 73,
>
> Jim K9YC
>
Still... a dB or so (or even 3) on a long run of coax isn't going to make a
hill of beans difference for most applications... an S-Unit is ~ 6dB. For
microwave and weak signal... sure, but you probably shouldn't be buying your
coax at a hamfest if that's what your interests and concerns are.
Mike
WM4B
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|