>
>> Well, I never had an N to fail yet, except if water gets
>> in it will fry at once, but then again almost anything will
>> fry when water gets in.
>> However, nowdays I started to use 7/16 connectors on
>> HF and VHF/UHF also for that matter. One sure will sleep
>> safely with 7/16 connectors in the system.
>>
>> 73, Jim SM2EKM
>
>The weakest connector in the link when N's and UHF's are mixed
>is by far always the N.
>
UHF connectors leak water. Properly installed, N connectors do not leak
water.
>While standard good-quality UHF connectors easily handle 5kW or
>more (I've seen them operated at 15-20 kW) N's will blow their
>lunch at a few KW.
The Plywood Box's 40m feedline was joined through a Type N pair of cable
fittings at its midpoint. The measured breakdown potential was c. 4kV.
The RF potential was c. 1200v (14.4kW). It never leaked water. No
failure occured at 14kW using SSB.
>
>If you work above 200 MHz, are making critical measurements, or if
>the electrical length of the impedance bump in the connector totals
>more than one degree you might need a constant impedance
>connector. But an N is worthless at HF or lower VHF in normal
>applications compared to a standard UHF connector.
>
story time.
end
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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