"As Dave mentioned earlier the larger bathtub caps have a cap and a coil, they are riveted to the rear apron and the backs are soldered on, here is a photo from one removed from an allwave fifteen, yes a later radio but does share a lot of similar…"
The Fine Things are Always Hand Made
mike hadley's Discussions
agc transformer
Started this discussion. Last reply by Brad Winder Jun 12, 2022. 4 Replies 0 Likes
Working on my Phantom I decided to remove and replace the caps in the agc amplifier transformer. When I removed the transformer I found that the coil was damaged with half of the winding missing and…Continue
re cone a phantom speaker
Started this discussion. Last reply by David C. Poland Mar 23, 2022. 2 Replies 3 Likes
I have a Magnavox speaker from a Scott phantom to repair,it is fitted…Continue
Making a field coil speaker
Started this discussion. Last reply by mike hadley Jun 13, 2021. 3 Replies 1 Like
After rebuilding both permanent magnet and field coil speakers the next step for me was to build a field coil speaker from the bottom up,besides there is an awful lot of radios out there without the…Continue
30 into 23 will go
Started this discussion. Last reply by Thomas Day Sep 24, 2019. 3 Replies 2 Likes
I thought that I would like to share the last installment of my Philharmonic,the cabinet started life as an Allwave 23 Tasman, but the radio has sadly long gone, and there was some horrible…Continue
mike hadley's Page
Latest Activity
"Hi Mike,
Thanks for your patients with me. I am looking for escutcheons for my AW 23, 7 knobs. The cabinet is looking good, but missing them. I have the chassis fully restored and working well. I also need a speaker. If you have…"
"David,
You need to check the friends link on your page to enable us to talk via email
Mike"
"Mike,
I have checked my in box, email, spam etc. and found no reply. Could you respond again?
Thanks"
"Is the radio dead on all wavebands?
have you checked that the local oscillator is running?
have you checked the tubes to see if they are ok?
(one of mine had a detached cathode)
did you manage to get the wavechange cam back in the correct position…"
"Hi Doug,
5v is way to low check the continuity of your field coil windimgs and the connections to and from your speaker plug.
the aw15 has two windings, onr as part of the main ht filter, the other as the cathode load for the 2a3 output tubes
here…"
"Absolutely amazing work on all this! "
"Hi Mike,
Your work continues to be nothing short of amazing.
John"
"David,
Check your inbox
Mike"
"Does Anyone Know if reproductions are still available. I am looking for escutcheons for my AW 23.
David"
"Brush on plating does work with excellent results but be careful, as the layer is only micrometers thick any surface marks will show, the part also has to be chemically clean and if it's made from any aluminium or zinc alloy it will present…"
"here is a photo of the undersise of my Phantom in the rarly stages of restoration, the two modules that dave is referring to can be seenone mounted on the rear apron and the other nest to the center divider,
these can be a swine to get out but they…"
"I have tried both alignment with a wobbulator and the method posted by Norman both work.
The meter needs to be dc as you are looking at the signal after the detectors and the signal here is dc,
over here in the UK the nearest I could get to a 30ua…"
"Joe;
Unfortunately all of the bathtubs are riveted in, as my aw15 was in such a mess when it came into my ownership I decided to restuff the bathtubs.
They all have soldered on backs and they are all potted in tar, there are two caps that I didnt…"
"Hi Joe,
The Bathtubs mounted on the rear wall backs are filters they consist of a choke and cap,
the backs are soldered on, once removed the filter networkcan be seen
The choke is on the right and the paper cap is on the left in the photo, be…"
"The earlier schematic that Joe was refering to was the result of not having the correct diagram for my aw15,
https://ehscott.ning.com/forum/topics/allwave-fifteen-schematic
I put it together from the Riders documentation and included a decent image…"
mike hadley's Photos
Comment Wall (3 comments)
- At 8:40pm on March 24, 2024,
David Dodgen said…
Hi Mike,
Thanks for your patients with me. I am looking for escutcheons for my AW 23, 7 knobs. The cabinet is looking good, but missing them. I have the chassis fully restored and working well. I also need a speaker. If you have any source, I would appreciate it.
David Dodgen
- At 6:29pm on February 28, 2020,
mike hadley said…
Thom;
Thank heaven for Hammond, my Mcmurdo v had the tone stack hacked out, long before the set came into my possession, I ran the tone schematic through ltspice to get the inductor values, Mouser provided.
I now have accumulated parts to build the combined psu and amp, luckily I have enough bench supplies to prove the radio is working.
I quite often find that if you keep chipping away, rather than tearing into a project, it allows thinking time. This helps to find the best way around a problem.
And as you know I found a way around the seven pin socket problem for my Philly a while ago.
Mike
- At 5:27pm on February 28, 2020,
Thomas Day said…
- Mike: Nice power supply. I can source a similar used Heathkit supply here on Ebay.
I worked for them from 1967 thru 1974. I left in 1975. Here, Hammond transformer company makes suitable transformers for tube equipment at reasonable prices. I also have several Hammond organ Leslie amplifiers that have a balanced input. Since I would also need 6.3 volts at 5 amps for the filaments, a complete transformer supply would be better. When I bought my Allwave 23, the one question I didn't ask was does it work? The answer as I found out was no. The power transformer had a shorted winding. Thru this list I was able to find a company in Michigan that could wind a new one. Took several months, and since we go the Muskegon Mi. in October, and the company is on the way, I was able to pick up the new one. Minor construction differences required a custom mount, but it works just fine. For my needs, I would only need the tuner B+ and -20 volts for the bias circuits. I would also need to source the 7 pin socket to match the tuner plug. Since it is different from the standard 7 pin, that could be hard to find. I enjoy your posts on restorations.
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