|
|
|
|
|||||||
| General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
 |
|
|
Thread Tools |
11th Feb 2011, 4:52 pm
|
#1 |
|
Hexode
Join Date: Nov 2006
Location: Biedenkopf, [Hessen], Germany.
Posts: 425
|
QTL valves
hello friends,
I have buyed tubes , nos, CV4014, packed and stamped by QTL. I have not found this manufacturing, is it a english company? CV4014 is very closed to EF91, a 7 pin IF Stage penthode. But its inside with a blue color on the glas, the simply EF91 is transparent. greetings Martin |
|
|
11th Feb 2011, 7:54 pm
|
#2 |
|
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
|
Re: QTL valves
QTL were a distibuter. Enter 'blue EF91' into the search option above and there are a few threads covering this subject.
|
|
|
|
12th Feb 2011, 12:14 am
|
#3 |
|
Hexode
Join Date: Nov 2006
Location: Biedenkopf, [Hessen], Germany.
Posts: 425
|
Re: QTL valves
thank you
it shows the way of the tube: Manufactured by Mullard, stamped and boxed for QTL, they sold it to germany, to Radarleit GmbH (a military equipment Co from Phillips) greetings Martin |
|
|
|
12th Feb 2011, 6:31 pm
|
#4 |
|
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
|
Re: QTL valves
More of an internal transfer than a sale, then, Mullard being also owned by Philips.
__________________
....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
|
|
