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I found a 1960 channel master 14 transister portable radio. It has a jack for an external am/fm aantenna but I can't figure out what kind of jack it is. Any ideas?
Thanks
Jeff
Follow Ups:
I have a similar radio, made by Panasonic back in the early 60s. I listened to that thing every night. Mine has a small hole for an external antenna as well; but it is only for an AM external. The telescoping rod is for FM. As I recall, (a LONG time ago), the AM external was nothing more than a piece of thin, coated wire, possibly tinned, inserted into the small hole. Good luck.
"
"If it measures good and sounds bad, it is bad; if it measures bad and sounds good, you have measured the wrong thing."
- Daniel R. von Recklinghausen
Just a SWAG, though.
If so, and if you go searching for a plug or an earphone, nowadays:
1/8" plugs are typically referred to as 3.5 mm
3/32" plugs are typically referred to as 2.5 mm
Here's some 2.5 mm hardware, e.g.:
http://www.allelectronics.com/make-a-store/item/cb-119/14-cable-w/2.5mm-phone-plug/1.html
Here's an adaptor:
http://www.monoprice.com/Product?c_id=104&cp_id=10429&cs_id=1042909&p_id=7122&seq=1&format=2
(these are just Google results; I have no experience with these products, although I've bought from Allelectronics before)
all the best,
mrh
Yes, that's it!
That's just a standard mini plug as the MH and Joe said..Just goes over to Radio Shack while they are still open and take the radio and they can match it up.Just buy a plug and solder a long wire to the center pin..That's all you need to do.
"If it measures good and sounds bad, it is bad; if it measures bad and sounds good, you have measured the wrong thing."
- Daniel R. von Recklinghausen
Edits: 02/23/15
Also used was a pin plug, just a pin for a single length of wire. You would need to size it. Maybe find stranded wire the right size and tin the end. A single strand wire likely would be too stiff to be practical.
Don Brian Levy, J.D.
Toronto ON Canada
Looks like a pin plug, thanks
And photo would help but it was not uncommon to use a mono 1/8" plug similar to the type and size of the now common headphone plug. You can use a stereo plug as finding a mono version is unlikely.
Some used what is now called the 2.5mm jack used by some cell phones.
Don Brian Levy, J.D.
Toronto ON Canada
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