A definitive (hot power) investigation was made by Gray, Frierson,
email@example.com Check with them.....
Some of their data:
Using a KW (!) source signal:
Loss as listed:
FREQ LOSS, WATTS, Loss, DB
.1 mhz: 1 watt, .004 db loss
1 mhz 1.2 watts, .005 db loss
10 mhz 1.3 watts, .005 db loss
20 mhz 1.5 watts, .006 db loss
100 mhz 2.6 watts, .01 db loss
400 mhz 7 watts, .03 db loss
1ghz, 15 watts, .06 db loss;
Connector failed at 1750 mHz, at a KW, due to heating
73, DX de Pat, AA6EG/N6IJ
"The Contest Station from the Government"
Marina Amateur Radio Contest Station; N6IJ
599 DX Drive
Marina CA 93933
On Sun, 14 Jun 1998, Ray LaRue wrote:
> A friend of mine asked the following question. Anyone offer any
> references on the subject?
> "Does anyone have any definitive data which plots PL-259/SO-239
> coax connector losses against frequency? Most ARRL texts say
> this type
> of connector should not be used above about 220 MHz because it
> does not
> exhibit a constant 52 Ohm impedance. However, I can find nothing
> in my
> library stating how much loss might be expected if they are used
> anyway. Any ideas?"
> Your attention is appreciated.
> Ray, W4BYG
> Submissions: firstname.lastname@example.org
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