[Elecraft] K3(s) Headphone Splitter

[Josh]

Good answer!! Fast, too. Hihi

Sent from my mobile device

> On Apr 25, 2018, at 11:12 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>> On 4/25/2018 10:54 AM, Rich wrote:
>> Is there a commercial item for this purpose?
> 
> Yes, the RANE HC-6 would work. And they make several other small mixers that make it easy to switch and route audio.  While the mixers may not have a stereo headphone output, you could easily make a cable adapter from the outputs to a cable-mounted stereo jack. I would study their catalog and look for the products used on ebay.
> 
> There's also a discontinued Shure product that does what you want. It's the model FP22 headphone amplifier. Runs on internal batteries or 12VDC. Very nice.
> 
>> 
>> I know I will need an audio isolation transformer between each radio and the splitter/switch.   Any suggestions on what a good impedance value would be for those transformers?
> 
> No, a transformer is NOT needed. All that is needed is proper bonding between all equipment in your station, including audio gear like the HC-6 or FP22.  Study
> http://k9yc.com/GroundingAndAudio.pdf
> 
> 73, Jim K9YC
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