Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Hammond transformers for Radiola III A PROBLEM !
#1

I just wrote an e-mail to Hammond Transformers. The transformers they are making to repair the Radiola III A do not fit into the original cans because of the wires used to connect the contact board to the transformer itself. They are too thick and too long. There is no electronic reason for the wires to be as heavy gauge as they are, nor to have as thick insulation as they have.The highest B voltage they will see is +80 volts, according to the Radiola III A manual, nor do they carry that high a current. The original wires were much thinner, probably #24 from what they looked like.
#2

I've almost given up on Hammond as a source, not only are their prices higher then competing products, but they seem to exhibit an indifference to the mechanical needs of antique radio restoration by doing things like this. For example, the bulk of their replacement power transformers are vertical mounted, whereas most vintage radios have horizontal mounted transformers that fit into a sqaure hole in the chassis. About the only ones I've seen that are horizontal mounted are marketed towards those rebuilding guitar amps, and I saw those on the AES website, not in the Hammond catalog, so I am not sure if Hammond made them or not.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT-6 antenna connections
Hi Bridcarl +1 on the others.  Pin 6 of the 7C6 is the AVC Diode so it is appropriate that that pin 4 of the coil con...MrFixr55 — 07:30 AM
462ron
Joseph, this is beyond awesome. A lot of thought and engineering went into this and you hit a home run! Now I must save ...462ron — 07:27 AM
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM

[-]
Who's Online
There are currently no members online.

>