[Elecraft] bnc connector

[Charles Harpole]

Most hams know that the standard BNC (not the mini version)

should handle 200-300 watts and not be pushed higher, altho likely will go

higher for some time.

The So-239 is often rated at a Kilowatt of RF but clearly takes double

that in many many shacks.  However, at about 6 KW with a small

SWR, the SO-239 will begin to arc the pin to shield.

The big one that looks something like a BNC, called an N,

has many advantages including taking higher RF, presenting

a lower SWR bump in the line, greater shielding of the shield line,

and a nice twist and pull release removal method (or screw on versions, too).

  These are

seen on antennas for 440 and above often (like Hustler).  

However, they are even harder to install/solder especially if 

u try to keep the O ring that resists water entry in place.

Forget the SMA for ham RF applications.

GL, and I mean, GL...


Charles Harpole

k4vud at hotmail.com






> From: k0pp at rfwave.net
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K2 bnc connector
> Date: Thu, 7 Aug 2008 05:08:28 +0000
>
> Oak Hills Research sells kit containing two very nice, quality
> BNC chassis-mount female connectors with gold-plated pins.
> The kit also comes with mounting plates and hardware to install
> them in standard SO-239 holes. It's their part number OP-SB2
> and sells for $7.50 for a pack of two.
>
> I used these kits when I built my K3 to replace the two SO-239's
> supplied with the kit, and also on my WM-2 wattmeter.
>
> 73! Ken Kopp - K0PP
> ElecraftCovers at rfwave.net
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