[Elecraft] [K3] Shorting K3 PHONE jack outputs (WAS OT: Stereo to mono adapters)

[Fred Jensen]

What is a "3-circuit phone plug?"  I know about 1-circuit plugs 
[tip-sleeve providing one circuit] and 2-circuit plugs [tip-ring-sleeve 
providing two circuits -- tip-sleeve and ring-sleeve].  Is this 
referring to 2-wire and 3-wire plugs?  I've seen on the list here that 
the wrong plug will blow the AF amplifier.

I followed the legends on the back panel and I don't use the front panel 
mic or headfone jacks.  Where it said MONO, I use a 1-circuit plug, 
STEREO gets a 2-circuit plug.  I use cables from Radio Shack between 
sound card and radio and they seem to work fine.  I really hope I'm not 
screwing something up in my radio.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org

On 12/3/2010 12:38 PM, Don Wilhelm wrote:
>    James,
>
> That is incorrect.  If you plug a 3.5mm mono plug into the adapter, it
> will short between the ring and sleeve on the 1/4 inch side too.
>
> 73,
> Don W3FPR
>
> On 12/3/2010 2:45 PM, James Sarte (K2QI) wrote:
>> I'm assuming however that a 2 circuit plug into a 3 circuit adapter should
>> be fine; i.e. plugging a 3.5mm mono plug into 1/4" stereo to 3.5mm stereo
>> adapter, which is then inserted into the 1/4" phone socket?
>>
>> Tnx,
>> James K2QI