Mazda 30FL2. - UK Vintage Radio Repair and Restoration Discussion Forum

FERNSEH · 21st May 2014, 2:07 pm

The Mazda 30FL2 was introduced as a replacement for the earlier 30FL1. I think the reason for this was that Thorn Valves and Tubes Ltd had stopped making TV valves and simply sourced the replacement from another valve maker. First it was Mullard and later on after Mullard had stopped making valves from just about any other manufacturer Thorn could find, from East Europe for example. The pro-electron number for the 30FL2 is the PCF812.
I was surprised to learn that Mazda actually made a 6.3 volt heater version of the 30FL2, the 6FL2. Possibly for export only as it is branded an Ediswan.
The 30FL1 is a triode-beam-tetrode. The 30FL2 is a triode-pentode and looks like a PCF80.

http://www.radiomuseum.org/tubes/tube_6fl2.html

DFWB.

Focus Diode · 22nd May 2014, 8:27 pm

Interesting info about an interesting valve, perhaps best known for their line oscillator function in BRC 1400 and 1500 sets. The 1400's is actually a 30FL1 yet the 30FL2 functions well in this posistion. I assumed the 30FL2 was an improved version of the 30FL1.

I also had no idea about the 6FL2 variation.

Cheers,
Brian

21st May 2014, 2:07 pm	#1
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Mazda 30FL2. The Mazda 30FL2 was introduced as a replacement for the earlier 30FL1. I think the reason for this was that Thorn Valves and Tubes Ltd had stopped making TV valves and simply sourced the replacement from another valve maker. First it was Mullard and later on after Mullard had stopped making valves from just about any other manufacturer Thorn could find, from East Europe for example. The pro-electron number for the 30FL2 is the PCF812. I was surprised to learn that Mazda actually made a 6.3 volt heater version of the 30FL2, the 6FL2. Possibly for export only as it is branded an Ediswan. The 30FL1 is a triode-beam-tetrode. The 30FL2 is a triode-pentode and looks like a PCF80. http://www.radiomuseum.org/tubes/tube_6fl2.html DFWB.

22nd May 2014, 8:27 pm	#2
Focus Diode Octode Join Date: Jan 2006 Location: Borough of Gateshead, UK. Posts: 1,420	Re: Mazda 30FL2. Interesting info about an interesting valve, perhaps best known for their line oscillator function in BRC 1400 and 1500 sets. The 1400's is actually a 30FL1 yet the 30FL2 functions well in this posistion. I assumed the 30FL2 was an improved version of the 30FL1. I also had no idea about the 6FL2 variation. Cheers, Brian