Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Bottle ID
I had a little fiddle with an ultrasonic cleaner i have had since the 1970s.
I made a mistake when i wrote the number back on the valve.
I used magic marker and when i was using it to sort out a jammed car door lock in the 1980s that took all day the writing burned off the valve
It looks like a pentode or perhaps a beam tetrode of a transmitting or line output type and will be blasting away at a pretty high voltage in order to drive the huge polo mint shaped piezo transducer.
I powered it up and it went like it always has done
An EL or PL36 perhaps depending on the heater voltage? Looks about right for one of those.
Rich
It is about the same size as a PL509 however it is on an octal base.
So it is a bit more powerful than a PL36.
I would say from the size and weight that the transformer is about 300 - 400 VA.
I will have to find a way of measuring the heater safely as the anode voltage looks pretty high.
I will have to put it on the variac and do it at 24vac input.
There is a getter just spot welded onto the anode and the marking on the glass can be seen in the third photo.
I will have to do it in the daylight though.
The G3 looks like an inner anode with circular cutouts that can be seen through the square cutouts in the anode.
I had a look at the 813 and came to the conclusion that it is not the same as it is directly heated and my beast is indirectly heated and has a warm up time that is consistent with this.
I put the close up photo on while i was looking into the heater and grid count.
6GW6?
See here; http://tubedata.milbert.com/images/RCA/ ... RCA_EF.jpg
Rob.
Thursday night is shed night.
That is the one.
I looked on the UK valve museum site and they had nothing starting 6D and i did have the first two digits of the number remaining.
I thought it showed some common looks to a line output valve.
It is going to be a pain to get a replacement as the audiophools are at it.
The one i have got is working well
6DQ6B/6GW6 looks right.
that is a very useful web link.
Cheers
The G3 looks like an inner anode with circular cutouts that can be seen through the square cutouts in the anode.
These are the beam deflection plates, as this is a beam tetrode not a pentode.
I had a look at the 813 and came to the conclusion that it is not the same as it is directly heated and my beast is indirectly heated and has a warm up time that is consistent with this.
The 813 is a very different beast, much larger and graphite anode.
Rob.
Thursday night is shed night.
I was thinking of a beam tetrode being most likely to start with and that looks indeed like what we have got.
I have now had a look at the rating plate and model and it looks like 100W of power.
The valve is just over an inch and a half wide so it is big enough to handle the power.
The mains rating is 125W and there is about 10W for the heater and 5W for the fan.
The transformer looks a bit large as it has to be de-rated a bit as the valve is running in half wave due to a rectifier not being present.
- 33 Forums
- 7,927 Topics
- 116.2 K Posts
- 8 Online
- 510 Members