Philips G8 - CRT Types - UK Vintage Radio Repair and Restoration Discussion Forum

Paul Godley · 4th May 2017, 9:22 pm

Hello, did the G8 have a 26" 110 degrees CRT , ie: A66-140X ? or were they all 90 degree?

Paul

FERNSEH · 4th May 2017, 9:28 pm

All G8 CRTs were 90 degree delta gun types. 22 and 26" tubes and from 1976 a 20" CRT model was added to the range of G8 models.

Delta tube 110 degree used in the G9.

DFWB.

jayceebee · 4th May 2017, 10:12 pm

The G8 was unusual in using two different types of 90 degree 26" CRTs in their model range, the A66-120X and the electrically similar but slightly larger A67-120X. I don't recall any other UK manufacturers doing so but I could wrong.

John.

FERNSEH · 4th May 2017, 10:52 pm

The A67-120X was sourced from North America. It's most likely an RCA tube.
It has been fitted in other brands such as Pye, Ekco and Invicta.

DFWB.

Philips210 · 4th May 2017, 10:53 pm

Hi.

I recall the 20" version that Fernseh mentions. The CRT was type A51 220X and employed an integral magnetic shield so didn't require the usual external shield as used in the 22" and 26" versions.

Regards
Symon

FERNSEH · 4th May 2017, 11:00 pm

The 20" G8 was incredibly compact yet used standard G8 modules and for all that it turned out be a very reliable set. I think the CRT was imported from Japan, might be wrong though.

DFWB.

Paul Godley · 4th May 2017, 11:08 pm

Thanks chaps for the quick reply. I guess the 110 degree G9 is a very rare set?

regards

Paul

FERNSEH · 4th May 2017, 11:16 pm

The G9 is a very rare set. Only recently after a long search Forum member System A was very lucky to find this excellent set:

http://www.vintage-radio.net/forum/s...d.php?t=134715

DFWB.

jayceebee · 4th May 2017, 11:18 pm

Quote:

Originally Posted by FERNSEH

The A67-120X was sourced from North America. It's most likely an RCA tube.
It has been fitted in other brands such as Pye, Ekco and Invicta.

You learn something new everyday, never seen one in a PYE group set although I suppose a manufacturer had to keep options open during the colour boom period in case of short supply.

Heatercathodeshort · 5th May 2017, 7:55 am

I have seen the '27' inch A67-120X fitted in the Thorn 3500. I presume Mullard could not produce enough tubes in such a busy period. J.

Maarten · 8th May 2017, 2:12 pm

They might have been manufactured under license instead of imported. Mazda probably manufactured them, and possibly SEL and/or Videocolor. According to radiomuseum.org Blaupunkt was the main user of those tubes (I remember being said they had a horrible reputation for going flat) and there is actually a German Philips K7N that uses the A67-120X if that is not a printing error in the original documentation. It would be interesting to know the brand used in G8 sets. If Mullard (or another Philips brand) maybe the stamping on the bell can shed some light on its origin.

Welsh Anorak · 10th May 2017, 12:30 pm

I have an A67-120X in a Decca Bradford which is Mullard badged.
I have a 20" G8 which I need to get going again. It did have an odd CRT which I think was also used in some Pye 20" 725 series TVs.
Glyn

4th May 2017, 9:22 pm	#1
Paul Godley Pentode Join Date: Jan 2014 Location: Doncaster, South Yorkshire, UK. Posts: 158	Philips G8 - CRT Types Hello, did the G8 have a 26" 110 degrees CRT , ie: A66-140X ? or were they all 90 degree? Paul

4th May 2017, 9:28 pm	#2
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Philips G8 - CRT Types All G8 CRTs were 90 degree delta gun types. 22 and 26" tubes and from 1976 a 20" CRT model was added to the range of G8 models. Delta tube 110 degree used in the G9. DFWB.

4th May 2017, 10:12 pm	#3
jayceebee Heptode Join Date: Jun 2007 Location: Durham, County Durham, UK. Posts: 640	Re: Philips G8 - CRT Types The G8 was unusual in using two different types of 90 degree 26" CRTs in their model range, the A66-120X and the electrically similar but slightly larger A67-120X. I don't recall any other UK manufacturers doing so but I could wrong. John.

4th May 2017, 10:52 pm	#4
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Philips G8 - CRT Types The A67-120X was sourced from North America. It's most likely an RCA tube. It has been fitted in other brands such as Pye, Ekco and Invicta. DFWB.

4th May 2017, 10:53 pm	#5
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,578	Re: Philips G8 - CRT Types Hi. I recall the 20" version that Fernseh mentions. The CRT was type A51 220X and employed an integral magnetic shield so didn't require the usual external shield as used in the 22" and 26" versions. Regards Symon

4th May 2017, 11:00 pm	#6
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Philips G8 - CRT Types The 20" G8 was incredibly compact yet used standard G8 modules and for all that it turned out be a very reliable set. I think the CRT was imported from Japan, might be wrong though. DFWB.

4th May 2017, 11:08 pm	#7
Paul Godley Pentode Join Date: Jan 2014 Location: Doncaster, South Yorkshire, UK. Posts: 158	Re: Philips G8 - CRT Types Thanks chaps for the quick reply. I guess the 110 degree G9 is a very rare set? regards Paul

4th May 2017, 11:16 pm	#8
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Philips G8 - CRT Types The G9 is a very rare set. Only recently after a long search Forum member System A was very lucky to find this excellent set: http://www.vintage-radio.net/forum/s...d.php?t=134715 DFWB.

5th May 2017, 7:55 am	#10
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Philips G8 - CRT Types I have seen the '27' inch A67-120X fitted in the Thorn 3500. I presume Mullard could not produce enough tubes in such a busy period. J.

8th May 2017, 2:12 pm	#11
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,203	Re: Philips G8 - CRT Types They might have been manufactured under license instead of imported. Mazda probably manufactured them, and possibly SEL and/or Videocolor. According to radiomuseum.org Blaupunkt was the main user of those tubes (I remember being said they had a horrible reputation for going flat) and there is actually a German Philips K7N that uses the A67-120X if that is not a printing error in the original documentation. It would be interesting to know the brand used in G8 sets. If Mullard (or another Philips brand) maybe the stamping on the bell can shed some light on its origin.

10th May 2017, 12:30 pm	#12
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,924	Re: Philips G8 - CRT Types I have an A67-120X in a Decca Bradford which is Mullard badged. I have a 20" G8 which I need to get going again. It did have an odd CRT which I think was also used in some Pye 20" 725 series TVs. Glyn