Here's a simple product that can be used to couple a typical headphone
output to a hearing aid that has a T-coil. The plug is almost certainly
a 2-circuit (Tip-Sleeve) plug, so you would need to change it to a
3-circuit (Tip-Ring-Sleeve) to use it with a K3.
73, Jim K9YC
http://www.comtek.com/ntc102.html
When I was designing systems, I told my clients to buy a few of these.
Comtek is a fine US company based near Salt Like City. I've known them
and used their products for nearly 30 years.
73, Jim K9YC
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