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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

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Old 27th Nov 2019, 3:43 pm   #1
Welsh Anorak
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Default What's this Baird?

Hi
My colleague's been offered this and was wondering if it was fully dual standard. I don't think so, but I'd be interested in knowing the model number - possibly a 620?
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Old 27th Nov 2019, 3:46 pm   #2
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Default Re: What's this Baird?

Is that a model number visible at the aerial input panel?
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Old 27th Nov 2019, 4:03 pm   #3
Welsh Anorak
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Default Re: What's this Baird?

Could be, but we don't actually have the TV, just the photos.
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Old 27th Nov 2019, 4:17 pm   #4
slidertogrid
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Default Re: What's this Baird?

I have only seen a couple of this type of Baird but It looks like an unconverted set.
I think the UHF tuner fits where the blanking plug is just above the VHF tuner. I can't see if the UHF aerial socket is fitted or blanked off from the picture. But as there is no visible UHF tuner knob I would think there is no tuner fitted.
If it is a convertible set I wonder how it switched systems as there isn't a system switch visible either maybe a U position on the VHF tuner similar to some Thorn sets with solenoid switching?
A nice set though and probably quite rare...
Rich
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Old 27th Nov 2019, 4:58 pm   #5
Mr Hoover
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Default Re: What's this Baird?

The system switch goes over when the VHF tuner is on the U position,no solenoids
involved,we had the Uhf tuner 23" version for some years.
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Old 27th Nov 2019, 5:57 pm   #6
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Default Re: What's this Baird?

One of those was our family telly for many years.

It came as a purely 405 line set, and only later was fitted with the UHF tuner and a few other bits to enable 625 lines and BBC2. I was there at the time, it seemed to take about 20 mins to convert the set, and a bit longer to fit a second aerial and feeder.

The VHF tuner was a turret job and had a 'U' position as already said, which flipped the system switch to 625.

The UHF tuner was free rotating with a ball drive. The transparent knob had a slower moving scale underneath it.

We were watching one of these sets when Emley moor mast fell and our UHF picture vanished.

David
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Old 27th Nov 2019, 5:57 pm   #7
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Default Re: What's this Baird?

620 series?: https://www.vintage-radio.net/forum/...d.php?t=134764
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Old 27th Nov 2019, 6:05 pm   #8
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Default Re: What's this Baird?

The Baird M646 looks very similar:

https://www.vintage-radio.net/forum/...3&d=1335090016

Lawrence.
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Old 27th Nov 2019, 7:00 pm   #9
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Default Re: What's this Baird?

This series of sets was not bad performance-wise and is fairly easy to work on as well, i have the dual standard version. The UHF tuner drive setup however is the worst piece of stupid and over-complex design I have ever come across: it uses no less than two rubber friction washers, which either develop "flats" or just shrivel up, and an excessively complex string drive for the slow motion part. I think at least another make had a similarly awful design, possibly Pye. I can only assume it was a particularly "bad hair" day for the designer(s) or that they just bore the world a grudge!

Nice looking set Glyn, go for it!
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Old 27th Nov 2019, 7:02 pm   #10
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Default Re: What's this Baird?

Yes, it is a Baird M646. I had one a few years ago and that didn't have the rotary valve UHF tuner unit fitted either.

It's an all valve set, circa 1963/4. CRT type AW59-91. However, in my set, a 660 series main chassis (transistorised IF stages) had been fitted into the set, retaining the original front control panel assembly.

Very nice dark wood cabinet with folding doors and screw-in legs.

Gave a cracking picture after a good 23" Mullard CRT fitted and many components replaced.

Last edited by dazzlevision; 27th Nov 2019 at 7:08 pm.
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Old 27th Nov 2019, 8:58 pm   #11
Andy Green
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Default Re: What's this Baird?

its complete with what look like original legs! they often got taken off or lost/ broken
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Old 28th Nov 2019, 10:33 pm   #12
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Default Re: What's this Baird?

Those legs are back in fashion! Just look at the TV ads for furniture. Screw-in tapered wooden legs on chairs, sofas, and sideboards but unlikely to be seen on Television sets ever again. What goes around, comes around...
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