EL-something output valve? - UK Vintage Radio Repair and Restoration Discussion Forum

Tractorfan · 16th Nov 2015, 9:20 pm

Hi,
When I found the 6AM4 mentioned in my previous thread, I was actually looking for this one.
I think it's possibly a line output valve made by Philips with part of the type no. rubbed off (typical!

).
The pin out is:
1- g2, 2- h, 3- k,g3, 4- g1, 5- g1, 6- k,g3, 7- h, 8- g2, top cap- a. Odd that the pin out is symmetrical.
There's an etched no.
6730
FN-2
What might this valve be? Over to you chaps.
Thanks.
Cheers, Pete.

FERNSEH · 16th Nov 2015, 9:35 pm

Possibly the EL300. Designed as a line output valve. There was also the PL300.
Certain early colour TVs used two in the line output stage, for example the early 60s Bush round CRT colour TV.

From the Radiomuseum: http://www.radiomuseum.org/tubes/tube_el300.html

The valve was developed in France by Clifte.

DFWB.

mickjjo · 16th Nov 2015, 10:00 pm

Yes, EL300/6FN5 line output valve:-

http://www.r-type.org/exhib/abi0016.htm

Regards, Mick.

16th Nov 2015, 9:20 pm	#1
Tractorfan Dekatron Join Date: Mar 2008 Location: St. Frajou, l'Isle en Dodon, Haute Garonne, France.(Previously: Ellesmere Port, Cheshire, UK.) Posts: 3,183	EL-something output valve? Hi, When I found the 6AM4 mentioned in my previous thread, I was actually looking for this one. I think it's possibly a line output valve made by Philips with part of the type no. rubbed off (typical!). The pin out is: 1- g2, 2- h, 3- k,g3, 4- g1, 5- g1, 6- k,g3, 7- h, 8- g2, top cap- a. Odd that the pin out is symmetrical. There's an etched no. 6730 FN-2 What might this valve be? Over to you chaps. Thanks. Cheers, Pete. Attached Thumbnails __________________ "Hello?, Yes, I'm on the train, I might lose the signal soon as we're just going into a tunn..."

16th Nov 2015, 9:35 pm	#2
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: EL-something output valve? Possibly the EL300. Designed as a line output valve. There was also the PL300. Certain early colour TVs used two in the line output stage, for example the early 60s Bush round CRT colour TV. From the Radiomuseum: http://www.radiomuseum.org/tubes/tube_el300.html The valve was developed in France by Clifte. DFWB.

16th Nov 2015, 10:00 pm	#3
mickjjo Rest in Peace Join Date: Jul 2004 Location: Dartford, Kent, UK. Posts: 1,661	Re: EL-something output valve? Yes, EL300/6FN5 line output valve:- http://www.r-type.org/exhib/abi0016.htm Regards, Mick.