1983 Philips 26CS3890/05R Teletext & Printer
MRG Systems ATP600 Databridge
Teletext Editing Terminal
Microvitec Monitor 1451MS4
BBC Microcomputer TELETEXT Project
Viewdata, Prestel, Philips
Philips Model Identification
1976/77 Rank Arena AC6333 – Worlds First Teletext Receiver
PYE 1980s Brochure
Ceefax (Teletext) Turns 50
Philips 1980s KT3 – K30 Range Brochure
Zanussi Television Brochure 1982
Ferguson Videostar Review
She soon put that down
1983 Sanyo Brochure
Wireless World Teletext Decoder
Unitra Brochure
Rediffusion CITAC (MK4A)
Thorn TRUMPS 2
Grundig Brochure 1984
The Obscure and missing Continental
G11 Television 1978 – 1980
Reditune
Hitachi VIP201P C.E.D Player
Thorn 3D01 – VHD VideoDisc Player
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
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
1983 Philips 26CS3890/05R Teletext & Printer
MRG Systems ATP600 Databridge
Teletext Editing Terminal
Microvitec Monitor 1451MS4
BBC Microcomputer TELETEXT Project
Viewdata, Prestel, Philips
Philips Model Identification
1976/77 Rank Arena AC6333 – Worlds First Teletext Receiver
PYE 1980s Brochure
Ceefax (Teletext) Turns 50
Philips 1980s KT3 – K30 Range Brochure
Zanussi Television Brochure 1982
Ferguson Videostar Review
She soon put that down
1983 Sanyo Brochure
Wireless World Teletext Decoder
Unitra Brochure
Rediffusion CITAC (MK4A)
Thorn TRUMPS 2
Grundig Brochure 1984
The Obscure and missing Continental
G11 Television 1978 – 1980
Reditune
Hitachi VIP201P C.E.D Player
Thorn 3D01 – VHD VideoDisc Player
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
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
B&W TV 60's Pye VHF tuner
This quite compact VHF tuner was used by Pye Australia in the T18, T19, T20 and most T21 chassis.
Very early versions of this tuner were 10 channel, most were 13 channel. My T18 has a 10 channel version.
Pye sourced this tuner from the UK, subsequently changing over to a locally sourced turret tuner from Astor. This worked for both companies - Pye made yokes and Astor made tuners for both brands.
Anyone seen this before?
Who was HDF?
Anyone have a schematic?
Anyone know where to get the rare and unusual RF amplifier bottle, 6FC7?
Thanks Frank. Would never have guessed that's what HDF stood for!
Back in the 60s most techs got very good at putting the index ball back and tightening the nut on the back of the rotor. Very common failure.
The older of the two Pedigrees I picked up has one of these tuners. It had that same fault, as does this one.
This one was fitted to the newer of the two sets, the 24" square corner one. as a means of holding the knobs in place - the correct tuner was left lying in the bottom of the case - fortunately!

Bit of history of HDF: https://tvstudiohistory.co.uk/itv-studios-in-london/highbury-studios/
The valve is a direct equivalent to the ECC89 and Langrex have 42 of those in stock.
(This reminds me that I need to get an output bottle for my Healing 403E)
Thanks for that link to HDF history. And the ECC89 cross to the 6FC7, didn't know that.
Looks like Pye UK must have used an existing shelf company (HDF) when they decided to make tuners. Fascinating story! HD kinescopes in the early 50's!
I can't see a Healing 403 in my Oz TV circuit compilation, only a 400 and a 405. These were late 50s 21" TVs.
Or was there a UK Healing TV?
In any case, if you are looking for a 6DQ6, a 6CM5 (EL36) is a good substitute.
That HDF tuner caused an unexpected problem in the Pedigree.
Because the controls were on the top of the set, the tuner was immediately underneath the (metal) channel knob. With the valves buried inside the tuner case, much heat would be conducted up the tuner shaft, which became so hot it couldn't be used without considerable discomfort!
So here is a pic of the old knob, and the clever fix Pye came up with.
Not needed for electrical insulation of course, as one might think looking at it, all Oz TVs have mains transformers and so the metal knob was safely grounded!
I will use the old knob on the newer all SS Pedigree, it doesn't even get warm!

Posted by: @irob2345can't see a Healing 403 in my Oz TV circuit compilation, only a 400 and a 405. These were late 50s 21" TVs.
I should have been clearer: the 403E to which I referred is in fact the famous "Scales" radio, of which my example was photographed for this years' BVWS calendar. I bought one at a HRSA auction in Sydney just after the Olympics finished as a souvenir of my time there. Whilst I could probably find a 6M5/EL80 here in the UK, the double-diode/pentode within (6AR7GT) has no direct European equivalent and was apparently only made in Australia by AWV.
Would you like me to enquire about the ECC89s for you?
Oh a radio, not a TV!
Yes I know the one.
Is yours the desirable jade green one?
If you can't find a 6M5 a 6CK6 (TV video output) is exactly the same animal with G3 brought out separately.
The 6AR7 was indeed an AWV design, intended specifically for reflexed IF/audio operation. It has an unconventional pinout so you can't sub another bottle such as an EBF32 (without a socket rewire anyway). I could probably source one for you if needed.
Oh does your 6M5 have the crackles? The early Mullard ones had silver plated pins and suffer from silver migration between G2 and G1. You can scrape the silver away between the pins and fix it.
If Langrex ships OS I can go direct. The ECC89 in my Pye T18 is a little weak, although that doesn't make much difference using a modulator, it only takes a minute or so to hit its straps.

@irob2345 Sadly, to my shame the radio remains unrestored to this day but as I now have a source of 1M switched pots with metal shafts for the volume control (the switch on mine has failed), I can do something with it. Mine is the more common cream model with the blue dial.
To my surprise, Langrex have a few 6M5s in stock but not their Pro-Electron counterpart (EL80); of course, the danger here is if there's another valve sharing that type number - here in the UK Mazda had a frequency-changer valve called the 6C9 that was nothing like the Sylvania 6C9!
Should I find I need a 6AR7GT, I'll be in touch - and I'm pretty sure Langrex do international shipping.
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