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 Post subject: Trego 3 tube
PostPosted: Mar Wed 14, 2018 2:23 am 
New Member

Joined: Mar Wed 14, 2018 1:33 am
Posts: 2
Hello all, first one posting on the forums, and first experience with battery powered tube radios.

I was recently gifted this radio by a friend and would like to know more about it. Any history or technical info is appreciated.

Specific question would be:

Appropriate A and B voltages?

Is it ok to use a modern batteries my pack to achieve these? (Number of 9v in series or similar)

Why are there 2 terminals for B+ and do the require the same voltages? If not how do I know which is which?

I was also gifted an old pair of headphones with the radio. They have pin type connectors that I am not familiar with. I saw some pictures of a similar set up and the headphone plugs were screwed across the output terminals horizontally. Is this correct for my radio? Any risk of hooking them up backward? They look like they have been rewired.

Also there are three 1/4 inch plugs in the front. What are these for?

Thanks in advance.

 Post subject: Re: Trego 3 tube
PostPosted: Mar Wed 14, 2018 2:42 am 
New Member

Joined: Mar Wed 14, 2018 1:33 am
Posts: 2
Some photos of the radio

71BDE738-DA59-45AE-89ED-30AB712301F8.jpeg [ 34.48 KiB | Viewed 122 times ]
887BFFB2-5DE4-445D-B196-CEAF2471CCA6.jpeg [ 32.82 KiB | Viewed 122 times ]
980876F0-AC72-4324-8039-FCA482686D2A.jpeg [ 34.7 KiB | Viewed 122 times ]
94CAE3FF-F080-4007-8EF6-6BC4E6382A7D.jpeg [ 31.4 KiB | Viewed 122 times ]
 Post subject: Re: Trego 3 tube
PostPosted: Mar Wed 14, 2018 5:23 am 

Joined: Jan Thu 01, 1970 1:00 am
Posts: 36409
Location: Livermore, CA
One B+ should be 90 volts. The other most likely detector, around 45 volts. You can use 9 volt transistor radio batteries.

The "A" battery should be around 6 volts. It's brought down by rheostats on front of your radio. Each 01A tube draws .25 amps for filament so you need a good size battery for this. Best to have a power supply to operate the radio.

Jacks in front on most radios are for head phones connected to different stages.


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