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 Post subject: Radiola III Demo
PostPosted: Sep Tue 21, 2021 5:56 pm 
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Joined: May Sat 30, 2015 11:49 pm
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Location: Keystone Heights, FL, USA 32656
Here is a demo of a Radiola III, all original except for the rubber support straps. Using WD-11 tubes, 1.3v A, 45v B, and -4.5v C with an ARBE III battery eliminator. It plays quite loud with headphones and is listenable with an external Peerless speaker.

Here is a video, if interested: https://youtu.be/3OwCb5JOFOI

Edit: Darn, I already did this with a different radio. viewtopic.php?f=1&t=390233&hilit=Radiola

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 Post subject: Re: Radiola III Demo
PostPosted: Sep Tue 21, 2021 6:36 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Bristol TN 37620
Nice, Jeff.


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Tue 21, 2021 7:57 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Lafayette, CO
I heard one of those at the Bowie (MD) radio and television museum many years ago. There was a storm heading up the east coast which may become a hurricane. It did. That was the first l heard of it. Craig


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 3:58 am 
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Location: Seattle, WA
Thanks Jeff. Very decent!

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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 6:42 pm 
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Joined: Oct Thu 04, 2018 2:11 pm
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Location: Suburban Chicago
I have a Radiola III partially restored and a Radiola 100A speaker which is still working so your videos are shaming me into getting the III playing again! I have restored the transformers and ordered some modern tubes that should work. And just a few days ago I ordered some tube adapters from China so I could be close to getting it on the air before the end of this year, the 100th anniversary year for broadcast radio. There's a reasonable chance then that the radio could drive the 100A speaker directly? Or were you using another amp in between?


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 6:44 pm 
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Joined: May Sat 30, 2015 11:49 pm
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Location: Keystone Heights, FL, USA 32656
I had the Radiola III connected to the Peerless speaker directly. No amplifier.

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“Nothin’s worth nothin ‘till somebody wants it.”—Irv Metter


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 7:07 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Boston, Massachusetts
Nice video, brave soul using the original WD-11's.

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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 9:55 pm 
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Joined: Jan Thu 09, 2020 6:46 am
Posts: 203
Location: Lexington, KY, USA
mrx wrote:
Nice video, brave soul using the original WD-11's.


Don’t know much about tubes, much less early tubes, just had to find out why you wrote that.

https://en.wikipedia.org/wiki/WD-11


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 10:43 pm 
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Posts: 3928
Location: Boston, Massachusetts
OldHack wrote:
mrx wrote:
Nice video, brave soul using the original WD-11's.


Don’t know much about tubes, much less early tubes, just had to find out why you wrote that.

https://en.wikipedia.org/wiki/WD-11


They are pricey,$50 for two on ebay,used.

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 Post subject: Re: Radiola III Demo
PostPosted: Sep Wed 22, 2021 11:14 pm 
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Joined: May Sat 30, 2015 11:49 pm
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Location: Keystone Heights, FL, USA 32656
mrx wrote:
Nice video, brave soul using the original WD-11's.

May be the only time for me that they get used. Have to triple check the filament voltage and handle carefully. They do not like to be dropped.

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“Nothin’s worth nothin ‘till somebody wants it.”—Irv Metter


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 Post subject: Re: Radiola III Demo
PostPosted: Sep Thu 23, 2021 4:45 am 
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Joined: Sep Mon 18, 2017 2:23 am
Posts: 8209
Location: Plymouth, MI
mrx wrote:
OldHack wrote:
mrx wrote:
Nice video, brave soul using the original WD-11's.


Don’t know much about tubes, much less early tubes, just had to find out why you wrote that.

https://en.wikipedia.org/wiki/WD-11


They are pricey,$50 for two on ebay,used.


That's not pricey, the BBT WD-11s are pricey, $150 or more for a good one. :shock: The later ones Jeff is using are not as delicate, much tougher than the originals.

Nice video Jeff.

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https://roaringtwentiesantiqueradiomuseum.com/


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