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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Aug Sat 01, 2020 12:51 am 
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Joined: Jan Thu 01, 1970 1:00 am
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That's an extremely interesting bit of Euro-radio history and the fact that a radio-maker dedicated a special band for it. Looks like they were at about 1440 kHz according to a meters-to-frequency conversion chart.

https://earlyradiohistory.us/khzmeter.htm

Dave


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Aug Sat 01, 2020 4:17 pm 
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Location: Indianapolis, IN
Colin---you do have some beauties there ! Don't remember you showing the Ultra before---very nice cabinet !

John


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Aug Sun 02, 2020 12:30 am 
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xrhonda91 wrote:
Colin---you do have some beauties there ! Don't remember you showing the Ultra before---very nice cabinet !

John

Thanks John. I thought I had posted the Ultra soon after I got it, but it is quite a few years ago now, so I could be mistaken. In any case, always happy to share!!


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 05, 2020 5:18 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: moreno valley
Here's my little collection of restored and working radios since I started fixing them up this year. Very few worked well or at all when I got 'em. Recapping almost always does the trick but I have hit two or three with a bad transistor, regular capacitor or coil. I'd recapped a half-dozen vintage tube TVs and a few tube radios long before this but I just wasn't crazy about working on small circuit boards with teeny parts until I finally got up the nerve to tackle them. It's a great hobby and they take up less space, too! I really only use a volt/ohmmeter but I'm going to get a signal tracer too for the faulty radios I am currently stuck on.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 05, 2020 5:23 am 
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^ Nice collection!

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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 05, 2020 5:58 am 
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Very nice collection.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 05, 2020 4:15 pm 
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Location: Palos Verdes, CA
frenchmarky - How do your Zenith 500H radios perform? Nice collection you have there! I've also started to work on some of the transistor radios I've bought some years ago as it seems there was fewer radios for sale on eBay recently that I want for my collection. - Mark


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 05, 2020 5:28 pm 
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Location: moreno valley
3Transistors wrote:
frenchmarky - How do your Zenith 500H radios perform? Nice collection you have there! I've also started to work on some of the transistor radios I've bought some years ago as it seems there was fewer radios for sale on eBay recently that I want for my collection. - Mark


They both work and sound great, one is a 500H, the other a 500H-1. The H had a dead ceramic cap which was cutting reception way down, the good folks in here helped me immensely in tracking it down.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Fri 18, 2020 8:56 pm 
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I picked this radio up on Facebook Marketplace yesterday for $5.00. It is a Ross Triumph RE-800, and I’ve not ever come across it. Radio Museum puts it at a 1962 vintage. Originally listed for $30, the seller dropped it to $10 obo. It had the usual corroded battery connections and very weak volume, but RF seemed to be good. After replacing all 8 electrolytic caps boy did it wake up! Very good volume, tone control has good range and with the substantial ferrite bar it has awesome sensitivity! It is also neat that the Short Wave antenna is built into and extends out of the top of the right side handle.

Very respectable Japanese competition from this era.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sat 19, 2020 5:16 am 
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Good deal on the Ross, Tim.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 1:23 am 
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Location: Palos Verdes, CA
The Drake Model SDI-106 transistor radio has a very small speaker and is powered by 2-AA batteries. Unfortunately, the Drake SDI-106 doesn't work and I've decided to just keep it as a display radio.


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Drake 6 transistor radio 3.JPG
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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 2:13 am 
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Location: Long Beach, CA.
I like the Drake. Looks like it's made in the USA.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 2:32 am 
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Unique radio. A recap would most likely get it singing again. In fact, try jumpering that cap that appears to go to the VC center lug with a close value, and see what happens. Also, the battery connections may be suspect as well, given the rust around them.

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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 12:34 pm 
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Location: Utica, NY 13502 (USA)
I have one of those Drakes. I could never find anything about it. It doesn't work, I've never tried to fix it, so it is in my collection of unusual, non-working transistor radios. Someone posted this in 2011.

viewtopic.php?t=158917

One sold at auction for $275 (!) in 1998.

Dave


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 4:12 pm 
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Joined: Aug Sat 16, 2014 2:19 am
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Location: Palos Verdes, CA
When I acquired the Drake SDI-106 transistor radio, the battery compartment was corroded and I figured the print circuit board had also been damaged, so I just left the radio as a display unit. When I bought a vintage Zenith hearing aid, I found that it had miniature transistors similar to the 3 in the Drake SDI-106, so I decided to take the Drake radio apart. There is only one screw that holds the circuit board into the case after you remove the control knobs and the external antenna on my radio was not connected to anything. I was happy to see that the circuit board was not damaged by the leaking batteries which I should have said earlier are size AAA. However, although the speaker still worked, the Drake radio was dead, even after replacing the one electrolytic capacitor. The 3 miniature transistors in the SDI-106 are not labeled, so I didn't think that trying to replace them would be a worthwhile exercise. Still, the Drake SDI-106 is a neat transistor radio that had 6 transistors at a time that other radios of the same period were significantly larger in size. - Mark


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Sun 20, 2020 10:27 pm 
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Only ONE Electrolytic? Highly unusual. Did you try measuring voltages on each Transistor's elements? The converter would be the prime suspect.

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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Wed 23, 2020 3:09 pm 
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Hi everyone,

This is my first post on the forum. I've been a guest / reader for a little while, but now that I've found a radio to tinker with and bring back to everyday use I thought I would make an account and share my find. This is by date a 1966 Zenith TO 3000-1, in good cosmetic shape. It is missing the battery tray / external power cable, but I am going to make a battery holder for rechargeable Panasonic AAs plus a single holder for the dial light (though I am still reading on how to do those things). I bought it from the original owner's daughter. She told me he was a radio broadcaster for 40 years, and used the TO daily, and brought it on family trips. Here are some photos:


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Wed 23, 2020 4:32 pm 
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Ged117, welcome to the forum. Good luck with the restoration of the Zenith.


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Wed 23, 2020 5:25 pm 
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Location: Indianapolis, IN
Welcome and congrats on your Royal 3000 T/O---also neat history !

Keep us posted on progress and feel free to ask any questions...

John


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 Post subject: Re: Got Transistor Radio Collections? New Finds? Let's See
PostPosted: Sep Wed 23, 2020 6:55 pm 
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Joined: Aug Sat 16, 2014 2:19 am
Posts: 1730
Location: Palos Verdes, CA
Ged117 - Below is a previous posting about the battery plug on a Zenith 1000 that you may find interesting:

viewtopic.php?f=4&t=188174

I've powered my Zenith 3000-1 using a 9 volt battery, but obviously not for long term use. - Mark


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