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The Fine Things are Always Hand Made

mike hadley
  • Hitchin
  • United Kingdom
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mike hadley's Discussions

30 into 23 will go

Started this discussion. Last reply by Thomas Day Sep 24, 2019. 3 Replies

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

Mcmurdo silver masterpiece v

Started this discussion. Last reply by mike hadley Aug 9, 2019. 4 Replies

Can anyone please help,I have recently managed to get my hands on a masterpiece v, but unfortunately someone in the past has removed the bass boost inductors from the output of the expander circuit,…Continue

Scott logo

Started this discussion. Last reply by Jon Ketron Aug 7, 2019. 3 Replies

Can anyone please help,I need a fairly good photo of the Scott logo from the rear of a speaker, the idea is to reproduce the artwork and make it available on this site,thanks in advance.MikeContinue

philharmionic bezel spring

Started this discussion. Last reply by David C. Poland Jan 11, 2019. 2 Replies

The dial bezel on my philly had tarnished to a dull brown, and the glass locking spring had rusted in position, this proved quite difficult to remove, after working at the old spring with a pick I…Continue

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Latest Activity

mike hadley replied to Kent King's discussion Scott serial numbers
"Scott didn't have much time for Mcmurdo, there is an intresting letter here https://drive.google.com/drive/folders/1RSs9TSToGXg-gGQPuBFsh_Hxdihjz3lT Mike"
Oct 22
mike hadley replied to Jeff Buda's discussion Scott Allwave Deluxe 12 - Cap replacement
"If you are interested here is the insides of a larger bathtub, the cap is on the left and the coil on the right, the junction of the two is marked with a red dot."
Oct 12
mike hadley commented on Kent King's blog post AW23 Alignment issue
"As the local oscillator is running the assumption that the 76 is working ok, is the 50pf grid capacitor ok? and rhe vanes of the tuning cap aren't shorting as only the local oscillator is connected to the vr tubes."
Oct 6
mike hadley replied to John Chidgey's discussion Past and present update
"Look out for the rubber wires that pass thought the chassis from the IF coils to the variable capacitors under the chassis, a good replacement for this is silicone rubber insulated wire, the type that is used on test leads is good, and it looks like…"
Sep 4
mike hadley replied to John Chidgey's discussion Current progress
"Wow, Lat looks very nice."
Aug 29
mike hadley replied to John Chidgey's discussion Antenna suggestions
"Believe it or not it's good old black pvc wire, 0.5mm conductor 16 strand, the coil measures 210uh and it has excellent performance, I was really surprised when I first tried the loop with a cheap radio, local stations can overload the front…"
Aug 28
mike hadley replied to John Chidgey's discussion Antenna suggestions
"A loop for am is a great idea, but for shortwave you cant beat a long wire, if you have a problem with local radio noise you could try an x-phase qrm eliminator, you can get one for a few bucks from ebay, they work really well. This is the folding…"
Aug 24
David C. Poland replied to mike hadley's discussion Philly cap box
"Tis .5  (1/2 MFD) each in the 7 cap box.   Sorry. Some Scott info shows a space between the decimal and the 5. Which is misleading. But it is actually .5 as per Kent."
Aug 16
mike hadley and John Chidgey are now friends
Aug 16
Kent King replied to mike hadley's discussion Philly cap box
"It is 7x 0.5 as noted earlier. I think Dave got an extra 0 in there. I'm in the process of rebuilding one of these myself. Years ago, a fellow here in Ohio was making replacement units. I suspect there would be interest in these again if…"
Aug 16
mike hadley replied to mike hadley's discussion Philly cap box
"Is that seven 0.05mfd or seven 0.5mfd ?"
Aug 16
David C. Poland replied to mike hadley's discussion Philly cap box
"Philly specs info for the box with 7 cap metal box are .05 MFD each  - see part #74 on Riders page 14-60. I use 630 volt film caps. I just cut the old wires a couple inches from the box and use new short orange leads exiting the rebuilt box,…"
Aug 15
mike hadley replied to mike hadley's discussion Philly cap box
"John, this is the other box I made for my radio, it does contain 7 caps at 0.5mfd, it's made and lined with transformer paper, the caps soldered to the metal box, The caps are then put inside the other half of the box with the wires…"
Aug 15
John Chidgey replied to mike hadley's discussion Philly cap box
"Hi David, Would this be 7 X 0.5 mfd? All three Philly's  use the soldered box containing 7 caps at .1 MFD which I rebuild with 630 volt film caps."
Aug 15
John Chidgey replied to mike hadley's discussion Philly cap box
"Thanks, Mike! Cheers"
Aug 15
mike hadley replied to John Chidgey's discussion Philharmonic selectivity/fidelity control popping
"This is caused by the audio filter caps being switched, the popping happens as the control is rotated towards the left, looking at the front of the radio, look at page eleven in the early Philharmonic instruction manual, top of this page, Scott…"
Aug 15

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Comment Wall (2 comments)

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.
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

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