Since I don't run an afterburner, I typically use bnc connectors on just
about everything, if anything for ease of disconnects/connects. I got that
idea from a broadcast engineer. I know they are only good for about 1000
volts, but wonder what their loss is compared to uhf connectors?
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
To: <tentec@contesting.com>
Sent: Thursday, May 08, 2008 6:09 PM
Subject: Re: [TenTec] Lowest loss matching an antenna for my Argonaut 509
> On Fri, 2008-05-09 at 00:47 +0000, ken.d.brown@hawaiiantel.net wrote:
>> "N" connectors, when properly installed have much less loss than so
>> called "UHF" (PL259/SO239) type connectors. At HF the loss may not be
>> much for a brand new, shiny PL259, and the extra care and expense
>> needed to install "N" connectors may not be worthwhile. With age though
>> a type "N" connector is likely to hold up much better, since they have
>> neoprene (or something like it) seals. Ask a UHF or microwave
>> enthusiast what they think of "UHF" connectors. What is your complaint
>> about "N" connectors?
>>
>> DE N6KB
>
> "UHF" has a sturdier center connection and a very poor outer connection
> that depends on the tightness of the threaded ring. I've burned UHF
> connectors black with only 18 watts of RF at 2m when vibration in the
> mobile shook the connection loose.
>
> I'd rather put on a dozen type N connectors than one UHF. I know the N
> is a lot different (except for some made for ham use that mistakenly
> take on the soldered braid UHF style), but I can do N's consistently
> without burned or worn out fingers. It takes a lot of heat to solder the
> braid of an N, which can do lots of damage to the insulation.
>
> But while lower loss and impedance matched (the other "fault" of UHF),
> the N connector interface is not as sturdy as the UHF connector
> interface. There are many other connector possibilities, I use type C
> for my antenna patch panel because its sturdier than N at the center pin
> (but not the shield connection) and uses a bayonet ring. Then there's H,
> LC, BNC (which will mate with N), SMA (small), SMB (smaller), SMC (even
> smaller), and 7/16 DIN. The 7/16 DIN has the sturdiest of center pins
> and shield connections which none of the US designs have simultaneously
> smaller than L or LC and is the darling connector of the cell phone
> industry because the large connecting surfaces have lower intermod and
> leakage than any other family of connectors.
>
> 73, Jerry, K0CQ
>
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