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Re: FT60 Headphones?

 

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Heh. And one more caveat - the Yaesu 3.5mm 4-ring plus isn’t quite standard. It’s about 1/2mm longer than an audio-standard plug, which means that an off-the-shelf plug most likely won’t work, unless it has a plastic shoulder you can carve 1/2mm from. And the audio out signal you want is the tip conductor, so that’s the one conductor that won’t make contact.?

But. If you’re looking for a connector to cannibalize, something like this might serve:


If it helps, I’ve attached the how-to doc for a speaker mic adapter I put together for our local ARES team when I discovered the issue.

(For the math-inclined, the Sony 7506 cans are nominally?80Ω impedance, and what I forgot when I first did my filter calcs is that putting the two sides in parallel for mono effectively halves the impedance. :)

Good luck!

Rick?

KK6WHJ

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On Apr 28, 2020, at 10:16 AM, Gary K9GS <k9gs@...> wrote:
Hi Rick and thanks for the reply.? Others have mentioned buying a speaker mic and plugging in a headset...not what I want.? I don't want a mic, just to listen.

But since you mentioned the DC bias problem you gave me an idea.? I think what I'm going to do is look for a right angle TRRS male plug that comes apart.? Then I'll find a pair of earbuds that I like, cut off whatever plug is on them, and then wire them to the right angle TRRS male plug and put the capacitors inside like you suggested.

I found this plug on Amazon but I'm not about to spend almost $20 for a silly right angle plug:



___________________________________________

Instead what I may do is buy one of these:



and on the un-terminated end install a 3.5 mm TRS JACK (easy to find and inexpensive) to plug the earbuds into and put the capacitors inside the jack housing.? I'm leaning towards this so I can use any headphones including my Sony 7506's if I want.

Regardless, a pain in the butt and maybe not worth the effort.? Just wish I could buy something but I don't think it exists.

73,

Gary K9GS
_



Rick

(303) 589-6700

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