ID this logo?

[Opcom]

Transformer logo, found on a few 22KCT to 5200 Ohm CT and 600 Ohm CT transformers. Anyone ever seen this one?

[Tom WA3KLR]

Looks similar to the old Lionel logo but I seriously doubt it is them, looks Japanese though.  I don't think they ever made audio transformers.

More likely -
Back in the early 1960's my brother and I had a small battery-operated reel-to-reel tape recorder.  I think the brand name was "Lloyd's", again Japanese I think.

[Pete, WA2CWA]

The typical logo used for Lloyd's:


The Lionel train logo:



Your logo:



Rotate either the Lionel image or your image 90 degrees, and you have the same logo.

[Opcom]

What would Lionel be making such high quality audio transformers for? Military contract? Using otherwise unused capacity? These things are small but seem to have MFP and white ceramic terminals.

[W4RFM]

If Mattel made my M-16 in 'Nam, I guess Lionel could make audio transformers, they already were making variable voltage units for their trains, so they were kinda in the business.

[Pete, WA2CWA]

Lionel has been around since 1900:

Lionel ceased toy production in 1942 to produce nautical items for the United States Navy during World War II.

They merged, bought-out, consolidated, partnered, diversified, etc. a number of times throughout their existence.

[k4kyv]

If Mattel made my M-16 in 'Nam, I guess Lionel could make audio transformers, they already were making variable voltage units for their trains, so they were kinda in the business.

They also made telegraph keys.

[Opcom]

The mystery is solved! Thank you all. These xfmrs state a 200-2500Hz response but they do a bit better at the high end, and if the loading is kept light they do 100Hz well.

[AJ1G]

Remember using one of the bigger Lionel dual control transformers for fixed and variable AC low voltage for my early JN radio projects.  Forget the model number, it was a big cube with controls on top, next model down from the football shaped one with twin throttle levers.  Had several  fixed and variable output taps.

[flintstone mop]

Transformer logo, found on a few 22KCT to 5200 Ohm CT and 600 Ohm CT transformers. Anyone ever seen this one?

LINK by any chance??? Link radio???

[W2PFY]

I think they stole the 7 From the soda company

[k7yoo]

THIS IS DEFINITELY LIONEL. I ORDERED THESE WHEN ARROW WAS SELLING THEM SURPLUS YEARS AGO. I STILL HAVE 'EM IN STOCK! THEY WERE USED IN AN SSB EXCITER PROJECT I CONSTRUCTED. I THINK THE CONSTRUCTION ARTICLE WAS IN 73 BACK IN THE DAY WHEN IT WAS THE COOLEST MAG AROUND AND THE OLD FARTS AT ARRL WERE PUSHING THE "INCENTIVE" LICENSING FIASCO.

[KM1H]

Those transformers have been around as surplus since the mid 50's at least and were used in the W2EWL SSB exciter; I built one around 58. Going by the 7502 date code they had a long life in some piece of military gear.

Either that or they were like the USAF 4D32's where the gear was scrapped soon after the Korean war but the flyboys kept scrapping old stock and reordering new until around 1990.

Your tax dollar at work.

Carl

[KE6DF]

These xfmrs state a 200-2500Hz response but they do a bit better at the high end, and if the loading is kept light they do 100Hz well.

I believe many WWII era audio military transformers were made under government contracts that specified 300 - 3000 Hz frequency response or similar.

But, the transformer company re-packaged transformers that had better frequency response and labeled them 300 - 3000 Hz just because that's what the contract called for.

Similarly, I've often wondered how much real difference there was between the UTC CG series and LS series of audio transformers -- other than the fancy cast case the LS units have.

Dave