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 Post subject: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sat 01, 2017 6:16 pm 
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Location: Richmond, VA
I found this today in a pawn shop in Knoxville for $5. I'll clean it up when I get home. Made in Japan. Radio Museum shows it as a YT-161 by Yashima Electric Co. also sold under the Hamilton and Universal brands.

I don't have a 9-volt cell handy, so I don't know if it works. But it should clean up nicely.
There's a crack upper left corner, and a small dent in upper front brightwork. It came with the leather case in pretty good condition.

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Last edited by Ed Morris on Jul Sat 15, 2017 10:50 pm, edited 1 time in total.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio
PostPosted: Jul Sun 02, 2017 5:01 am 
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Location: Las Vegas Nevada 89131
good price, great radio. Let us know how it goes


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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio
PostPosted: Jul Mon 03, 2017 6:19 am 
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Location: saint clair shores, michigan
I like the look, although I don't know why they had to put the screw in the face. I would have grabbed it at that price without a second thought. Nice find and good luck with restoration.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio
PostPosted: Jul Sat 15, 2017 10:49 pm 
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The screw is there because you have to remove the upper front trim to gain access to the volume knob, which has to be removed in order for the chassis to clear the case. I learned that today as this is the first chance I've had to take a closer look at the radio.

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The radio was dead when tested, not a peep. When I got the chassis out, I checked for broken wires and a bad earplug switch, but they were OK. I tested the speaker and found it was dead. I hooked another speaker up and got a strong audio hiss.

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Unfortunately, there is no RF reception, not even static. I checked the antenna, and it is not open, and the leads are not broken. I noticed both screws that hold the tuning condenser in place were missing. I found one rattling around in the case, but the other is missing. The last image shows the tuning condenser. If those are the plates visible in the image, they appear to be warped and shorted.


So that is the state of things at this point. I will have to put it aside again for a week or so.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio
PostPosted: Jul Sun 16, 2017 1:59 am 
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Location: Sunnyvale CA
Ed Morris wrote:
Unfortunately, there is no RF reception, not even static. I checked the antenna, and it is not open, and the leads are not broken. I noticed both screws that hold the tuning condenser in place were missing. I found one rattling around in the case, but the other is missing. The last image shows the tuning condenser. If those are the plates visible in the image, they appear to be warped and shorted.


I don't think those are the plates. I think what you see are the free ends of the polyethylene sheets that form the dielectric (hence "polyvaricon"), and they usually look like that.

Brett


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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 2:07 am 
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Thanks, Brett. They are flexible like vinyl, so I was wondering if they were something other than the plates.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 5:46 am 
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Ed Morris wrote:
Thanks, Brett. They are flexible like vinyl, so I was wondering if they were something other than the plates.


The plates are kept separated by the polyethylene sheets, not air. Don't ever put any cleaner in there, or the viscous drag will make it almost impossible to turn and probably tear the plastic if you force it.

Brett


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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 5:50 am 
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Location: Indianapolis, IN
Hey Ed,

Have you verified that the converter is oscillating using the nearby radio "trick" ?

John


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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 7:22 am 
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Replace the four Electrolytic's, and it should sing again. That's been the usual experience for me, in restoring scores of Transistor sets. The values don't even have to be the same, save for the cap that goes to the VC wiper, but AFA the others, I've used 10uF caps to replace 20, 30 and 50, with NP.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 2:56 pm 
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John, haven't had time to get back to the radio, but that's a good suggestion.

Fifties, I will recap. I have to go out of town for a week, but will give it a shot when I return.

Is there a source for those little speakers or do I need to find a donor? Mine has a diameter of 2-1/4". I saw a couple on eBay, but one was too small; others didn't indicate the size.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Sun 16, 2017 8:59 pm 
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Post the exact diameter and height, and I'll look in my Transistor radio speaker junkbox to see if I have something. If so, you can have it for postage.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Mon 17, 2017 1:36 am 
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Location: Mount Pleasant UT 84647 (from Coventry, UK)
Nice radio at a nice price. Definitely worth the gamble.


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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Mon 17, 2017 2:39 am 
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fifties wrote:
Post the exact diameter and height, and I'll look in my Transistor radio speaker junkbox to see if I have something. If so, you can have it for postage.


Speaker diameter is 2-1/4" and the height is 7/8". Thanks!

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Mon 17, 2017 2:43 am 
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Colin, thanks, for $5 I can always polish it up and set it on the shelf.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Mon 17, 2017 3:03 am 
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Ed Morris wrote:
fifties wrote:
Post the exact diameter and height, and I'll look in my Transistor radio speaker junkbox to see if I have something. If so, you can have it for postage.


Speaker diameter is 2-1/4" and the height is 7/8". Thanks!

Closest I have is 2-1/4" x 3/4", with 4 little screw tabs that could be cut off with tin snips if they don't line up. Tested and works fine.
PM your mailing address.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Mon 17, 2017 4:19 am 
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It should do fine. PM sent.

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 Post subject: Re: Captain Six Transistor Shirt Pocket Radio UPDATED
PostPosted: Jul Tue 18, 2017 11:25 pm 
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A good source for 2-1/4" speakers used to be the old Pentium desktops.
I saved quite a few, I don't know if there are still any around but some had bigger magnets than others.
They sure came in handy for transistor radios.


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