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 Post subject: Zenith phono jack connector
PostPosted: Feb Sat 03, 2018 4:12 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Long Beach, CA USA
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What sort of plug fits this jack on my Zenith radio? Seems like the pins would be very slender. Pin spacing is 1". Can't find a plug that even comes close.

Allen


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sat 03, 2018 7:37 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1154
Location: 77001
Post:
1. Model #

2. Complete photos of your unit

3. You more than likely will retro-fit an RCA input
jack on the radio for use as phono amplifier/speaker.

Hotwax


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sat 03, 2018 9:22 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Long Beach, CA USA
Hotwax thanks, I can fit another connector easily, but was curious about what the original plug would look like. Anyone ever seen one? Photo?


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sun 04, 2018 3:26 am 
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Joined: Dec Thu 10, 2015 7:01 pm
Posts: 180
Location: Aurora, IL
Might be like the ones used on my Hickok Mutimeter Model 450 made around 1951. Here is a photo of the original cables w/plugs and jacks on the meter. These plug pins measure about .094 inch or 2.4mm. Yours might have been a custom made dual connector that you could only get from Zenith. Manufacturers liked doing that sort of thing. Making a part you could only get from them. Personally I'd make up a plug that would plug into that existing connector before modifying the radio. But that's just me.


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sun 04, 2018 3:29 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 26087
Location: Detroit, MI USA
Those jacks take standard tip connectors, which were common at the time on headphones and many pieces of test equipment. They rarely had a grip on them, but some did as seen in the photo just above. There was never a dual plug configured for the Zenith, it simply used two tip connectors at the end of the cable from the phono attachment.

You can use a couple of pieces of steel, brass, or copper rod the correct diameter with wires soldered to them to make your connections. Note that on many Zeniths, the "ground" side of the phono input isn't chassis ground but goes to another point in the circuit.

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Dennis

Experience is what you gain when the results aren't what you were expecting.


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sun 04, 2018 3:46 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Long Beach, CA USA
Ah interesting, no wonder I had never seen such a plug. Thank you.


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sun 04, 2018 4:05 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 26087
Location: Detroit, MI USA
Steve showed us a photo of one he made, if you wanted to get a small box it looks pretty easy to assemble:

viewtopic.php?f=1&t=335361

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Dennis

Experience is what you gain when the results aren't what you were expecting.


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 Post subject: Re: Zenith phono jack connector
PostPosted: Feb Sun 04, 2018 4:49 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1428
Location: Long Beach, CA USA
Excellent. I know I have some of those tips around here somewhere.


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