In message <Pine.OSF.3.95.970925184752.17011A-100000@jekyll.sgate.com> Frank
Donovan writes:
> Here's a copy of the coaxial cable attenuation chart.
> The loss of 1/2" CATV cable is fairly close to RG-17 at HF frequencies.
> 1.8 3.5 7.0 14.0 21.0 28.0 50.0 144 440 1296
>
> LDF5-50A .04 .06 .09 .14 .17 .19 .26 .45 0.8 1.5
> FXA78-50J .06 .08 .13 .17 .23 .27 .39 .77 1.4 2.8
> 3/4" CATV .06 .08 .13 .17 .23 .26 .38 .62 1.7 3.0
> LDF4-50A .09 .13 .17 .25 .31 .36 .48 .84 1.4 2.5
> RG-17 .10 .13 .18 .27 .34 .40 .50 1.3 2.5 5.0
I find the CATV cable numbers suspect above 2m. There is a much
greater rise in attenuation from 144 to 440MHz for this one cable
(more than a tripling of dB/100ft) than for the others.
Regards,
--
Tony - G3SKR / W2TG email: tgold@panix.com
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