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Old 26th February 2003, 06:38 PM   #11
dhaen is offline dhaen  Europe
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Connector C must be the one then. I was confused by the wire that runs from C to a valve, but now I see it actually goes to an earth tag.


There's probably no way of determining the speaker impedance, but I would guess at 4 ohms. 8 ohms would be fine too, but the power output would then be less.
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Old 26th February 2003, 06:46 PM   #12
JDeV is offline JDeV  South Africa
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Default Re: Help - tube radio

Quote:
Originally posted by JDeV
I got an old "Pilot" tube radio from a friend and want to know the following:

2) What are the functions of selectors 1...6?

Thanx for all help.
Anybody have suggestions on the functions of these selctor buttons?
(See top of page, post#1)
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Old 26th February 2003, 06:47 PM   #13
EC8010 is offline EC8010  United Kingdom
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Default FM?

Are you sure it's FM capable?

There's only one tuning capacitor that I can see, and it would only be suitable from LW/MW/SW. To be able to tune VHF/FM, it needs a much smaller set of vanes of the variable capacitor, or perhaps slug tuning. Can we have a detail shot of the tuning capacitor? (It's the big vaned lump with the pulley and string.)
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Old 26th February 2003, 06:50 PM   #14
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Hi John,

Quote:
There's probably no way of determining the speaker impedance, but I would guess at 4 ohms. 8 ohms would be fine too, but the power output would then be less.
I would have thought that a late fifties early sixties radio was most likely to be 15 or 16 ohms for an external speaker?

From memory, most of the ones of that vintage I worked on were that with some 12 ohm and some 8 ohm.

I saw very few 4 ohm until mid to late sixties...

maybe my memories wrong... what do you think?

James
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Old 26th February 2003, 06:53 PM   #15
dhaen is offline dhaen  Europe
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Buttons: I would guess that:

FM
Phono
Medium wave
Others are probably "favourite stations (MW).

EC8010: The FM tuning is in the tuner-head. Look at the depth of the box. The FM tuning might be "permeability tuning".
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Old 26th February 2003, 06:55 PM   #16
dhaen is offline dhaen  Europe
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James,

In fact my UK experience is almost the opposite
Most were actually 3 ohm, with some 15 ohm high quality stuff.
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Old 26th February 2003, 07:05 PM   #17
EC8010 is offline EC8010  United Kingdom
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Quote:
Originally posted by dhaen
The FM tuning is in the tuner-head. Look at the depth of the box. The FM tuning might be "permeability tuning".
I wondered about that, but couldn't see any string going below the variable capacitor.
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Old 26th February 2003, 07:07 PM   #18
JDeV is offline JDeV  South Africa
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Default Re: FM?

Quote:
Originally posted by EC8010
Are you sure it's FM capable?

There's only one tuning capacitor that I can see, and it would only be suitable from LW/MW/SW. To be able to tune VHF/FM, it needs a much smaller set of vanes of the variable capacitor, or perhaps slug tuning. Can we have a detail shot of the tuning capacitor? (It's the big vaned lump with the pulley and string.)
I'am back. Here is another pic. The thingy behind the valve (is it valve or tube?) got 2 pieces on 1 shaft that can move upo and down.
Attached Images
File Type: jpg cap.jpg (94.3 KB, 137 views)
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Old 26th February 2003, 07:08 PM   #19
dhaen is offline dhaen  Europe
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EC8010,

Top left of post 2 shows a silver looking drive wheel, I think
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Old 26th February 2003, 07:10 PM   #20
dhaen is offline dhaen  Europe
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Beaten to it!

Yes, it's permeability

Tube = valve

Cheers,
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