When Two Ferrographs become Three! - UK Vintage Radio Repair and Restoration Discussion Forum

Ferrograph723 · 8th Mar 2020, 8:15 pm

I'm excited to announce a new addition to the 'ferrograph family'. Joining my Ferrograph Series 7 (the one that was never made - a model 723, for which there are no records of it ever existing) and my Ferrograph Series 4 (affectionately named the Pig Shed Spiderhouse, on account of it having spent 30 years in a pig shed giving a home to a million arachnids)...... I now have Ferrograph Number Three!

Kindly gifted to me my Dave 'NutterOnTheBus', it's a Ferrograph Series 2 of circa 1950's vintage! It's in really good shape - it powers up on a lamp limiter, the valves glow, the reels turn and the speaker hums (quite a lot!)! I've not managed to get any playback out of it yet, but I have limited tools at my disposal due to recent house move and still not having unpacked the non-essentials.

I'm looking forward to a parallel restoration of both Series 2 and Series 4.

Huge thanks to Dave for gifting this gem of a machine to me - and thanks also for introducing me to the fascinating world of Electrostatic Speakers!

suebutcher · 9th Mar 2020, 3:45 am

I made my Mark 2 722H from an incomplete 722 and two junked 724's bought for $15. It took several years, and there was no mechanical service data service data apart from information in adverts. Pre-Interweb days. The machine worked well, so I remade the control panel using Letraset, and fortunately the exact typeface was still available. That was the biggest expense I think. I wouldn't even consider taking on something like that now!

SteveCG · 9th Mar 2020, 1:51 pm

The Series 2 machine will need all its paper capacitors changing - if yours is anything like one that I dealt with in the past. Built like a tank...

8th Mar 2020, 8:15 pm	#1
Ferrograph723 Triode Join Date: Dec 2019 Location: London, UK Posts: 28	When Two Ferrographs become Three! I'm excited to announce a new addition to the 'ferrograph family'. Joining my Ferrograph Series 7 (the one that was never made - a model 723, for which there are no records of it ever existing) and my Ferrograph Series 4 (affectionately named the Pig Shed Spiderhouse, on account of it having spent 30 years in a pig shed giving a home to a million arachnids)...... I now have Ferrograph Number Three! Kindly gifted to me my Dave 'NutterOnTheBus', it's a Ferrograph Series 2 of circa 1950's vintage! It's in really good shape - it powers up on a lamp limiter, the valves glow, the reels turn and the speaker hums (quite a lot!)! I've not managed to get any playback out of it yet, but I have limited tools at my disposal due to recent house move and still not having unpacked the non-essentials. I'm looking forward to a parallel restoration of both Series 2 and Series 4. Huge thanks to Dave for gifting this gem of a machine to me - and thanks also for introducing me to the fascinating world of Electrostatic Speakers!

9th Mar 2020, 3:45 am	#2
suebutcher Heptode Join Date: Jul 2012 Location: Daylesford, Victoria, Australia Posts: 675	Re: When Two Ferrographs become Three! I made my Mark 2 722H from an incomplete 722 and two junked 724's bought for $15. It took several years, and there was no mechanical service data service data apart from information in adverts. Pre-Interweb days. The machine worked well, so I remade the control panel using Letraset, and fortunately the exact typeface was still available. That was the biggest expense I think. I wouldn't even consider taking on something like that now! __________________ The Waves That Rule Britannia Last edited by suebutcher; 9th Mar 2020 at 3:53 am.

9th Mar 2020, 1:51 pm	#3
SteveCG Nonode Join Date: Jun 2009 Location: Herefordshire, UK. Posts: 2,495	Re: When Two Ferrographs become Three! The Series 2 machine will need all its paper capacitors changing - if yours is anything like one that I dealt with in the past. Built like a tank...