[K3] jack size

[Ken G Kopp]

I have a large number of "1/8"- plugged patch cords.
None seem to fit the K3's jacks correctly.  I've always
attributed this to the quality of the jacks, not a possible
size mismatch.

The plugs on my several Heil headsets fit so sloppy
that I've sometimes used tape to hold them askew
to maintain contact.

Are there plugs commonly available in the US that -do-
fit properly?

73!
Ken - K0PP
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[Tim Heasman]

Hi,
I have just measured a 3.5 mm jack at 3.46 mm and 0.136 inches, making it 11
thousandths larger than 1/8 of an inch.  Probably makes a better fit that a
nominal 1/8 inch plug (about 10% smaller).  Mine are 3.5 mm and cause no
bother.
73
Tim
gm4lmh

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[Jim Brown-10]

On 1/2/2012 8:24 PM, Ken G Kopp wrote:
> Are there plugs commonly available in the US that -do-
> fit properly?

Hi Ken,

See the Ham Interfacing or RFI documents on my website. Both list high
quality parts made by Switchcraft and Neutrik that do, as well as a good
vendor that sells via the internet.

http://audiosystemsgroup.com/publish.htm

73, Jim K9YC
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[Roy Morris-6]

Thank you, Ron (AC7AC).  The Radio Shack P/N 274-284 plug does indeed fit
the STEREO/MONO jack on the back of the K3.  The Radio Shack package shows
it as a 1/8" Stereo Phone Plug.  Nevertheless, it fits the K3 jack without
wiggling around.  I find it very hard to eyeball the difference between the
1/8" and 3.5mm plugs.  Roy Morris  W4WFB

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