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 Post subject: WD-12 tube sub please
PostPosted: Nov Mon 27, 2017 11:20 pm 
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Joined: Sep Sat 22, 2007 3:19 am
Posts: 543
I have an ACE B-3 regenerative receiver that uses three WD-12 tubes. Are there other tubes I could sub?
Fred


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Mon 27, 2017 11:36 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 36085
Location: Livermore, CA
Fred

A WD12 is similar to 01A except for filament voltage. WD12 1.1 volts while 01A, 5 volts. There are other tubes but some do not have a bayonet base.

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Norm


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Mon 27, 2017 11:36 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Massachusetts
tubes with the same tube base are 864, #30, UX2O!A, UX-99.


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Mon 27, 2017 11:54 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 334
Location: Sandhills of Nebraska, 69170
I'm not 100% sure on the 3B, but on other Crosley models, like the 50 series (50, 51, 52) the sets could use 01a's, '99's, and the wd-12s. The manual for the 51 and 52 show the battery connections depending on what tube you used.

I would think the rheostats in the 3B would be the same or very close to these others. My 3B has 01a's in it.

Travis


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Tue 28, 2017 12:25 am 
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Joined: Sep Sat 22, 2007 3:19 am
Posts: 543
Thank you very much for the answers fellows. I do need a schematic for this radio so should I ask for it in another forum here?
Fred


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Tue 28, 2017 12:31 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 36085
Location: Livermore, CA
Here is the schematic:

http://www.nostalgiaair.org/pagesbymode ... 039630.pdf

99's will work but require an adapter. They have a smaller base.

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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Tue 28, 2017 5:25 am 
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Joined: Sep Sat 22, 2007 3:19 am
Posts: 543
This tag came with the radio so how did you guys make the Crosley connection?


Image


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 Post subject: Re: WD-12 tube sub please
PostPosted: Nov Tue 28, 2017 6:34 am 
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Joined: Nov Fri 30, 2012 3:35 am
Posts: 161
Location: Phoenix, AZ
Crosley identified a market opportunity for low cost radios and started marketing parts (not complete radios) in 1921. The market grew, so by 1922 complete radios were the next logical step ... and to get maximum performance from a minimum number of tubes (low cost) he needed to use a regenerative circuit; to do that he needed to get a license to use the Armstrong regenerative circuit. A limited number of Armstrong regen licenses had been issued, and no more were available ... except the Precision Equipment Company, also in Cincinnati, had signed up for one in mid-1920 and was selling radios under the 'Ace' brand. Crosley's solution was simple ... buy out Precision in early 1923. The Armstrong license was not transferrable, so Crosley sold radios under the Precision Ace name for a while, then did some corporate name and merger maneuvers that combined the companies. The Crosley chapter in Alan Douglas' excellent book series "Radio Manufacturers of the 1920s" describes it in better detail.
R/ John


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 Post subject: Re: WD-12 tube sub please
PostPosted: Dec Wed 13, 2017 5:02 pm 
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Joined: Dec Mon 05, 2011 1:10 am
Posts: 248
FreeElectron wrote:
I have an ACE B-3 regenerative receiver that uses three WD-12 tubes. Are there other tubes I could sub?
Fred


The Ace 3-B will actually work BETTER using an 00-A or 01-A tube in the left (detector) socket, an 01-A in the middle and an 01-A (or 112-A if driving a horn) in the right hand socket. If you are using headphones rather than a speaker, don´t even light up the second audio stage; any gain in volume will be more than offset by the muddying of the sound quality with two audio stages operating. Save your WD-12´s for a Crosley Pup (AFAIK, the ONLY radio ever designed specifically to use the WD-12), or sell them for enough to buy a lifetime+ supply of 01-A´s.

The multi-wound Crosley filament transformers in this radio will work fine with most any of the early 1920´s filamentary triodes, from the lowest-current
types like the 99´s up to the older 1+ Amp tubes like the UV-200 & UV-201.

I have used one of these sets, connected up to several voltage and current meters as a "tube tester" to check just about all the tube types in common use during the early 1920´s, from VT-1´s and WD-11´S on through WE-216 and UV-202 (at reduced voltage).


^^;;^^


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 Post subject: Re: WD-12 tube sub please
PostPosted: Dec Wed 13, 2017 8:52 pm 
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Location: Ohio 45177
You really don't want to mess with the early 1 amp filiment tubes if you can help it. Stick to quarter amp tubes like 01A series or such. Unless you got unlimited batteries or a big rechargeable battery. Or want to build a power supply.


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 Post subject: Re: WD-12 tube sub please
PostPosted: Dec Thu 14, 2017 1:19 am 
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Joined: Dec Mon 05, 2011 1:10 am
Posts: 248
wazz wrote:
You really don't want to mess with the early 1 amp filiment tubes if you can help it. Stick to quarter amp tubes like 01A series or such. Unless you got unlimited batteries or a big rechargeable battery. Or want to build a power supply.


EXCEPT for breadboard or other exposed-tube sets where they look super dazzle. The ARBE power supply can handle 2 (maybe 3 with a fan on the cooling fins?). I agree that you probably wouldn't want to run them in a closed-box set like the Ace 3-B, though I guess that the little "portholes" in those sets were meant mainly for visually adjusting the filament brightness of exactly those tubes.


^^;;^^


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