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Where To Get Sets and Parts For discussions about swapmeets, rallies, NVCF and BVWS, car boot sales, antique and charity shops, dealers, newspaper adverts, the local tip and just about any other source of equipment (other than eBay). |
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28th Mar 2011, 1:09 pm | #41 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
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Re: Marconiphone 702 coming to auction
Possibly, or it might just switch the EHT transormer, leaving the receiver and timebases powered. Except that it's unconnected in my set so I don't know. Difficult to tell if it was a factory fitment or not. Judging by the engraved plate it's not a modern addition.
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28th Mar 2011, 1:36 pm | #42 |
Tetrode
Join Date: Aug 2007
Location: Eastbourne, E. Sussex, UK.
Posts: 96
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Re: Marconiphone 702 coming to auction
The instruction manual interior shots are now uploaded. To make life a little easier, use this link to get straight to the lot in the sale:
http://www.bonhams.com/eur/auction/19034/lot/1/ As you can see, the typed strips are additions, but from the same time as the manual was born. The foxing to the pages creeps over the strips evenly. The use of a very sharp razor blade to one corner reveals the standard printed text in the manual, although I am not taking the strips off to find out what they say. I used a very bright lightbulb and sure enough, the printing underneath is the 'correct' way around, instead of this way around. Have fun. Laurence |
28th Mar 2011, 4:06 pm | #43 | |
Tetrode
Join Date: Oct 2009
Location: Chepstow, Monmouthshire, UK.
Posts: 60
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Re: Marconiphone 702 coming to auction
Quote:
Rob. |
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28th Mar 2011, 7:12 pm | #44 |
Dekatron
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Location: Warnham, West Sussex. 10 miles south of DORKING.
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Re: Marconiphone 702 coming to auction
The high quality sound transmission on 41.5mc/s was originally thought to be wasted for the limited television transmissions and it was intended to transmit the National Radio programme at high quality before the days of the F.M. service. The idea was to transmit the National Programme on the television sound channel when vision transmissions were not taking place. A switch was provided to kill the timebases and EHT leaving the sound channel in operation. A number of early post were receivers also had this feature. Other than late night news broadcasts the idea never became a feature. J.
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28th Mar 2011, 11:04 pm | #45 | |
Dekatron
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Re: Marconiphone 702 coming to auction
Quote:
Much appreciated, Peter |
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29th Mar 2011, 2:18 am | #46 |
Tetrode
Join Date: Oct 2009
Location: Chepstow, Monmouthshire, UK.
Posts: 60
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Re: Marconiphone 702 coming to auction
I would like to second that. I found the instruction manual a very interesting read.
Rob. P.S. I picked up some EMI documents on eBay recently. I haven't mentioned them before because I have little time to scan and post-process them, but if anybody desperately wants to see them, I'll try and get them scanned. 1. Colour brochure for Marconiphone 701 (1936) 2. Instruction manual for HMV 903 (1938) 3. Technical circular No.36, supplement 10, Marconiphone 704, HMV 903 (26/4/37) 4. Spare parts list for 704 & 903 (presumably part of supplement 10) 5. Technical circular No.36, supplement 10A, circuit diagrams for above (28/5/37) 6. 3 (original) copies of voltage & current readings for HMV 903 (24/6/38, signature and date 17/6/38) 7. Service sheet for Marconiphone 709 & HMV 907 (Nov 1938) (with tracing paper overlay showing signal paths) 8. Service manual for Marconiphone 706,707 & HMV 904,905 (Jan 1939) 9. Two photostat copies of Service sheet for Marconiphone 702, HMV 901 (Sept 1938). 2) & 5) Have stamp of "Radio Branch, Dollis Hill". 7) has stamp of "P.O. Television Laboratory, Wembley". One of (6) has embossed stamp of the coat of arms. 9) have stamp of "Post Office Laboratories, Palace of Engineering, Wembley", but this looks to be copied. One has written in pencil "Room 31 W/D Branch, Dollis Hill". Last edited by Dave Moll; 29th Mar 2011 at 11:31 am. Reason: unnecessary full quote of preceding post removed |
29th Mar 2011, 9:25 am | #47 |
Rest in Peace
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Location: Burghfield, Reading, Berkshire, UK,
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Re: Marconiphone 702 coming to auction
I would love copies of anything on the 703, 706 and 709 (costs met etc.). I'm quite happy to clean them up using photoshop and make the cleaned versions available - better than playing solitaire on the computer!
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29th Mar 2011, 11:20 am | #48 |
Tetrode
Join Date: Oct 2009
Location: Chepstow, Monmouthshire, UK.
Posts: 60
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Re: Marconiphone 702 coming to auction
Hi Brian,
Nothing on the 703 unfortunately. The 706 manual seems to be identical to the 1954 reprint already available (I wanted to see the foldout circuit diagram in it's entirety, rather than split over 3 pages in the 1954 scan; I can try to rescan this better, or failing that take a high resolution photo). I'll also get the 709/907 info scanned as soon as possible (probably the weekend). Rob. Last edited by Dave Moll; 29th Mar 2011 at 11:32 am. Reason: please DO NOT keep quoting the immediately preceding post in full |
29th Mar 2011, 11:23 am | #49 |
Tetrode
Join Date: Oct 2009
Location: Chepstow, Monmouthshire, UK.
Posts: 60
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Re: Marconiphone 702 coming to auction
P.S. I have little processing software as I run Linux. As you've offered, can I just send you the raw scans (as JPEGs) and let you do the rest?
Last edited by Dave Moll; 29th Mar 2011 at 11:33 am. Reason: see edit reason on previous post |
29th Mar 2011, 4:17 pm | #50 |
Tetrode
Join Date: Aug 2007
Location: Eastbourne, E. Sussex, UK.
Posts: 96
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Re: Marconiphone 702 coming to auction
No problem gentlemen - That's what's great about my job; it also happens to be my hobby. Bonhams pay me to enjoy myself - rock on!
If anyone would like to receive the raw 702 manual scans directly to their email address, please ring me or email me 0207 393 3984 or laurence.fisher@bonhams.com and I will gladly send them. I've also got that invoice scanned of course, and with a bit of photoshoping, one can alter the name (hint, hint.) If you come to the view armed with a laptop, scanner, camera and/or AVO, you will be most welcome to copy anything you want. In exchange for a beer in the pub next door. Viewing reminder - Starts from 11am-3pm on Sunday 17th April. Laurence |
29th Mar 2011, 6:24 pm | #51 |
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Location: Burghfield, Reading, Berkshire, UK,
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Re: Marconiphone 702 coming to auction
Hi Rob
Please for the 709 scans. I'll PM you with my email address. Hi Laurence - yes please for the raw scans of the 702 info. You have my email address. Thanks to both of you. |
4th Apr 2011, 7:34 am | #52 |
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Location: Southampton, Hampshire, UK.
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The oldest TV set in Britain
In the Daily Mail today... 1936, the Marconi type-702
http://www.dailymail.co.uk/news/arti...es-hammer.html |
4th Apr 2011, 7:50 am | #53 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
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Re: The oldest TV set in Britain
BTW, I'm pretty sure that this set is older than mine, which won the Digital UK competition in 2009.
Last edited by Station X; 4th Apr 2011 at 12:10 pm. Reason: Threads merged. |
4th Apr 2011, 8:57 am | #54 |
Dekatron
Join Date: May 2003
Location: Edinburgh, UK.
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Re: The oldest TV set in Britain
Journalist Gets Confused by History
"Unfortunately for the original owner, three days after he bought it the Crystal Palace burned down and that was where the transmitter was" |
4th Apr 2011, 12:32 pm | #55 |
Tetrode
Join Date: Aug 2007
Location: Eastbourne, E. Sussex, UK.
Posts: 96
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Re: Marconiphone 702 coming to auction
Quote:: Journalist Gets Confused by History
"Unfortunately for the original owner, three days after he bought it the Crystal Palace burned down and that was where the transmitter was" yes, what one submits to the press and what one sees in print are two different matters. Still, at least anyone who is missed off the list for any reason who needs to see this and have the opportunity to view and buy it, should now be informed of its location and date. Laurence |
4th Apr 2011, 5:11 pm | #56 |
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Re: Marconiphone 702 coming to auction
It's strange that both the Daily Mail and the Daily Telegraph report that the transmitter was burned down. It sounds as though thew press release was wrong, not the journalists! Baird had a fire in his studios at Crystal Palace - was this where the confusion arose?
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4th Apr 2011, 6:54 pm | #57 |
Dekatron
Join Date: May 2003
Location: Edinburgh, UK.
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Re: Marconiphone 702 coming to auction
He also had a transmitter at Crystal Palace although not relevant to the BBC transmissions but no doubt reporters put two and two together because it made a good story.
Peter |
5th Apr 2011, 8:12 am | #58 |
Tetrode
Join Date: Aug 2007
Location: Eastbourne, E. Sussex, UK.
Posts: 96
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Re: Marconiphone 702 coming to auction
Yes, they have proved 2 + 2 = 83.69. Anyways, on with the preparation for the sale. I shall be getting this baby ready for its journey from the warehouse to the gallery at Knightsbridge today.
To those who have asked for the high-res scans of the booklet, I hope you can reproduce it well to accompany your set(s). As a reminder, I have also a res-high scan of the invoice - if at any time you would like these scans, please do ask and I shall send. Image these printed out on old-stock paper, made into a booklet then left in a damp basement for a while - cool! Laurence |
5th Apr 2011, 10:17 am | #59 |
Heptode
Join Date: Jul 2008
Location: Selby, North Yorkshire, UK.
Posts: 979
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Re: Marconiphone 702 coming to auction
'The Register' also just copied the story about Crystal Palace - but some of us from here have put them right about the fact that the equipment was already moved and operational at Ally Pally by then.
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6th Apr 2011, 12:34 pm | #60 |
Dekatron
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Location: West Cumbria (CA13), UK
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Re: Marconiphone 702 coming to auction
Five off-topic posts concerning legal/safety issues have been removed. I think it's reasonable to assume that a professional auction house such as Bonhams has covered the legal considerations of selling items.
Let's keep the thread on-topic.
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