[Elecraft] A "My K3's coming question"

[Robert Tellefsen]

Lyle
Is that rear panel mic jack a true
tip-ring-sleeve jack or a simple mono jack?
If simple mono, I'd be uncomfortable
putting a stereo plug into it.  Too many
folks have had trouble with the K2's
headset jack.    I'm a bit leery of small
jacks in general due to the small leaf
springs in them.
73, Bob N6WG

----- Original Message ----- 
From: "Lyle Johnson" <kk7p at wavecable.com>
To: "elecraft" <elecraft at mailman.qth.net>
Sent: Wednesday, November 07, 2007 7:05 AM
Subject: Re: [Elecraft] A "My K3's coming question"


> > Is there a wiring diagram for the "optimum" K3 RS-232 cable anywhere?
> > I know people are saying "use a standard serial cable"...
> 
> For normal use, you just needs pins 2, 3 and 5, plus the shield to the 
> connector shell.
> 
> If you want to support DTR or RTS signaling (for PTT and/or KEY from a 
> logging program, for example) then you also need pins 4 and 7.  The 
> remaining pins (1, 6, 8 and 9) are currently not connected in the K3. 
> They will cause no harm if they are present, and you lose no 
> functionality if they are not.
> 
> > I'd also like to make up audio interface cables.
> 
> 6.5mm (1/4") stereo for front panel headphones, 3.5mm (1/8") stereo for 
> rear panel jacks.  The rear panel mic is mono, using tip and shell, so a 
> 3.5mm mono plug could be used.  I suggest using a 3.5mm stereo connector 
> anyway.
> 
> The rear apron connectors are so-called RCA or phono, at least here in 
> the USA.
> 
> 73,
> 
> Lyle KK7P
> 
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft    
> 
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com