>
>I believe it.
>For a few minutes, I've done tests with N up to 6 Kw @ 100 MHz (continuous
>carrier) with no failures or damages.
>This is possible with properly installed N connectors althought I wouldn't
>anyway raccomend to use more than 800 W @ 100 MHz with this type of
>connector.
>Up to 30 MHz there is instad a wide margin when using an N at 1500W.
>Connection pin size is not all that matters since allowable RF current is
>different than a mere DC rating.
>PL259/SO239 is a bit awful under this perspective and one shouldn't be
>misleaded by its size assuming the manageable power is larger than that of
>N, at least above 30 MHz .
>Also isolation is a bit meaningless parameter because 1500W @ 50 Ohms are
>only 275V.
>What counts, under reasonable limits, are impedance, materials, small size,
>mechanical precision etc. and this is valid in all RF connectors, EIA flange
>included (good inners made with berilium make a big difference compared with
>lower quality ones)
>For the same reason large vaacum relays for RF are rated for much smaller
>currents at higher frequencies.
>A 30A DC can easily drop to less than 10 A @ 30 MHz and some other non
>vacuum switch, looking smaller but impedance constant and mechanically
>precise, allows much more power already at 30 MHz and expecially above.
#12 is good for 20a at 60Hz, but only 5a at 30MHz.
>By the way, 1500W represent only 5.5 A @ 50 Ohm and both PL259 and N can
>perfectly withstand it below 30 Mhz.
>Power apart, N has other mechanical advantages that insure a much bigger
>long term reliability than PL does.
Amen to that, Mauri. For extra suds, Type C gets my vote.
ciao
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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