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 Post subject: Airline 62-331 11 tube 6v console with Hi-Fidelity switch
PostPosted: Apr Sun 05, 2020 2:43 pm 
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Joined: Jul Sun 26, 2015 11:34 pm
Posts: 977
Location: Hurdle Mills, North Carolina
I have this small console, not sure about how common it may be. Uses six #30s, three #34s, one #32 and one 6N5. The vibrator power supply has been hacked, missing the 7 pin vibrator and the transformer. I'm thinking slim chance of finding an original for this radio. It would be easy to build a regulated 6 volt and 140 plate supply, question should I go ahead and build the supply in the original vibrator chassis or see if I could find one?

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Larry in NC


Last edited by LarryAD on Apr Wed 08, 2020 12:54 am, edited 2 times in total.

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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Sun 05, 2020 2:57 pm 
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Joined: Jan Mon 18, 2010 2:13 am
Posts: 21470
Location: Dayton Ohio
amazing to hear of an 11 tube farm radio!
The fact that its been already hacked and missing major components would have me thinking of building a supply to replace it.

The chances of finding a correct 6 volt power transformer will be slim and none. I doubt building a new AC supply would affect value as it stands.

-Steve

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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Sun 05, 2020 7:22 pm 
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Joined: May Wed 27, 2009 5:24 pm
Posts: 243
Location: n9842 n birch rd, tomahawk, wisconsin, 54487
Seeing that that vibrator is a synchronous type, and it does the job of a rectifier tube, you might even say this is equal to a 12 tube set.


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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Sun 05, 2020 7:51 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 26730
Location: Detroit, MI USA
There's no reason not to build an AC power supply at this point. It will work better than the vibrator supply anyway, less noise and more reliable.

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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: Airline 62-331 11 tube 6v console question
PostPosted: Apr Sun 05, 2020 8:51 pm 
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Joined: Jan Mon 18, 2010 2:13 am
Posts: 21470
Location: Dayton Ohio
Personally, I try to keep the original type tubes, but That's your call. :D

-Steve

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Radio Interests
-Zenith
-Sparton
-Pre-War FM
Consoles and floor models, the bigger, the better!


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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Mon 06, 2020 12:08 am 
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Joined: Jul Sun 26, 2015 11:34 pm
Posts: 977
Location: Hurdle Mills, North Carolina
Thanks for the feedback, I'm going to keep the main chassis original and build a power supply in the separate vibrator chassis. The movie dial is near perfect, probably because the lamp is control by a monetary push button. I have attached a photo of the set.


Attachments:
62-331.jpg
62-331.jpg [ 206.45 KiB | Viewed 961 times ]

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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Mon 06, 2020 5:19 am 
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Joined: Jan Tue 07, 2020 1:41 am
Posts: 3127
Location: Fenton, MI 48430
My friend has identical radio. It is in good condition and he wants $125 for it. The dial light bulb is unobtainable. I suppose one could build an array of pen light bulbs with the focus lens to replace the dial light bulb.

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 Post subject: Re: Airline 62-331 11 tube 6v console question
PostPosted: Apr Mon 06, 2020 11:52 am 
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Joined: Jul Sun 26, 2015 11:34 pm
Posts: 977
Location: Hurdle Mills, North Carolina
The bulb is an 1156, 6v tail light. I've ordered an led equivalent to save on current, hopefully it will not introduce noise.

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 Post subject: Re: Airline 62-331 11 tube 6v console, powered up
PostPosted: Apr Tue 07, 2020 12:24 am 
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Joined: Jul Sun 26, 2015 11:34 pm
Posts: 977
Location: Hurdle Mills, North Carolina
Spent part of the day recapping the radio and then building a power supply for the hacked vibrator supply. The transformer is a half wave with a filament winding, for the B+ I used a bridge rectifier, a dropping resister, high voltage Zener and a filter capacitor. The vibrator supplied two -6 volts to the chassis for this I again used a bridge rectifier, two LM337T negative adjustable regulators and filter capacitors. Powered up the radio with the standard broadcast band selected and tuned in stations across the band, the 1 watt output sounded pretty darn good. I'm going to try and use a 6V led lantern bulb for illuminating the dial. Since I don't have to be concerned with battery life I may replace the momentary push button with a push on/push off for the lamp. Sure was a lot of engineering going on to produce a farm set of this magnitude!


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IMG_1447.JPG
IMG_1447.JPG [ 298.44 KiB | Viewed 854 times ]
IMG_1446.JPG
IMG_1446.JPG [ 276.31 KiB | Viewed 854 times ]

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 Post subject: Re: Airline 62-331 11 tube 6v console, powered up
PostPosted: Apr Tue 07, 2020 12:32 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 26730
Location: Detroit, MI USA
It will be interesting to see if the LED replacement for the movie dial projection lamp works out or not. The critical issue there is the focal length between the lamp's filament and the film and the screen. I'm guessing that it will be blurry if you can read the dial scale at all with the LED.

Years ago Zenith used a similar system for channel number projection onto a frosted screen in some of their TV's and nothing other than the correct lamp could be used because that was the only one with the filament in the correct position to get the proper focal length.

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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: Airline 62-331 11 tube 6v console with Hi-Fidelity switc
PostPosted: Apr Wed 08, 2020 1:06 am 
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Joined: Jul Sun 26, 2015 11:34 pm
Posts: 977
Location: Hurdle Mills, North Carolina
The 6v led lantern bulb works fine, I soldered two leads to it and made a right turn with the cable added a piece of heat shrink to keep it at a right angle. I had a 1 inch diameter piece of Delrin that I made a bracket for the bulb. I decided to keep the lamp on when playing the radio, rather than the momentary push button. I will place it back in the hole on the cabinet. Discovered that part of the tone control has a hi-fidelity switch at one end, does make a difference, but high fidelity in a farm and AM set! Pleased with the way it all came together, now a little cleaning and back in the box.


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IMG_1458.JPG [ 154.13 KiB | Viewed 769 times ]
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IMG_1452.JPG [ 221.05 KiB | Viewed 769 times ]
IMG_1451.JPG
IMG_1451.JPG [ 216.54 KiB | Viewed 769 times ]
IMG_1450.JPG
IMG_1450.JPG [ 188.4 KiB | Viewed 769 times ]

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