Dear Friends. I have had the following piece of service data on a shelf in my workshop for many years.
I have finally scanned it before it completely crumbles or is lost.

I believe it to be from a Kriesler. The valve line-up is unusual and should be easy to find for anyone who has a searchable database of radio Manufacturer/valve line-up/Model. Please let us know what it is.

Also the use of two dial strings, while not totally unknown in Australia, would certainly be a trap to someone who gets one of these without any dial string attached.

Bye the way, does anyone care to nominate a set more difficult to restring than a Tasma with rollbar tuning?

Wayne

I have restrung three of those, its a matter of technique. Leaving the dial on is not part of it & you normally have to undo it & unsolder the lower globe holder to change the bulb anyway.

One significant commonality with all of those (1103) is the ill conceived design. To get at one valve socket to rewire it was, easier to remove the coil above it & the resistor under there was cactus any way (& had friends of the same ilk). In all three the rubber wire to the heaters & filaments had to be replaced as its deterioration was clearly exacerbated by scanting: The wire is overloaded, and had been getting warm. Two things that cause a catastrophe, The sliders being dirty & having dried lubricant on them. Circuit board cleaner; Whatever is in it sends that old nylon cordage semi rigid & then it will not drive.

If you like a real challenge, I have a collector friend with a National (USA) SW5 receiver. The springs are inside a drum & the pulley system is a nightmare, even with long tweezers. In order to get at those drum springs, the whole line of gangs has to be dismantled. I can easily see over two hours, being taken to sort it out.

Wait till you get a double string one where there are two strings with the pointer on both and one cord runs contra to the other.

Marc

Digitally remastered.

The use of three 6N8s should shortlist the possible models nicely.

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A valve a day keeps the transistor away...

With that line-up and IF 457.5 kHz and BC and SW, I get four HMV models from 1950 to 1953:

R53A
R43B
R53B
R53D
R53E

That chart is HMV: For one that's a HMV IF frequency: Two it looks like R53B, R54B Radiogram "Ernst Fisk model. One of which is sitting in my shearing shed.

It should have two B+ chokes one for the radio & One exclusively for the 807. It has the most ill conceived, piece of mechanical junk, masquerading as a turntable, that I have ever dealt with.

We were using it at Radio Club displays & it can comfortably fill a cattle pavilion with noise.

Marc

The circuit of this HMV model is interesting.

HMV R43B R53B Circuit Diagram

HMV could of used a 6L6 in the output stage. But then why bother using a 6L6, when at the time you could easily source a cheap and endless supply of war-surplus 807's. The specs in the Miniwatt data book for the 6L6 & 807 is identical for single-ended use.

One of the 6N8's (2nd AF amp) has both its diode plates grounded and therefore not in use. Later on Philips/Miniwatt introduced the 6BH5, which is very close to the 6N8 minus the diode plates.

It has the most ill conceived, piece of mechanical junk, masquerading as a turntable, that I have ever dealt with.

Was this a Plessey or Collaro turntable? Restoration wise - neither are for the faint hearted!

Pretty sure its the Collaro & its actually in AORSM's in the HMV section. It did at one point lock part of the mechanism due to frozen grease soap. That I thought I had sorted out. but it was misbehaving when we took it out a fortnight ago.

One of the issues is that it gets transported & it is not designed for that, especially as one member will persist with putting it in a trailer. I have already had to add extra support for the chassis due to this (vertical & heavy).

Marc