museum-of-communication : Messages : 31-60 of 330

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31	From: Phil Phillips (phil4CCML@...) on behalf of Museum of Communications To: Xerxes Mazda (x.mazda@...) CC: John Crompton (wjc@...),...	Phil4CCML@...	Aug 30, 1999 6:09 pm
32	Does anyone have information about the Baudot instruemnt for sending Morse. It had 5 keys. Is there one in any of the museums I wonder ? I have recently been...	Geoffrey.Walsh geoffrey.walsh@...	Sep 26, 1999 6:11 am
33	I see I have been a bit careless in what I have posted, the Baudot system was a form of telegraphy but not, of course, Morse. -- Geoffrey.Walsh@... ...	Geoffrey.Walsh geoffrey.walsh@...	Sep 26, 1999 7:23 pm
34	I understand that mobile phones use frequencies aound 900 M Hz or 1800 M Hz. Some people apparently blame on their use headaches and perhaps many other...	Geoffrey.Walsh geoffrey.walsh@...	Nov 4, 1999 5:28 am
35	I have now a comparatively inexpensive system for getting signals into a PC, displaying them as oscilloscope tracings and saving the results as numbers in a...	Geoffrey.Walsh geoffrey.walsh@...	Nov 13, 1999 7:47 pm
36	... Answer: If you have Excel, you have all the required functions already: STDEV will calculate standard deviation based on sample, STDEVP will do the same...	Dave Pack david.pack@...	Nov 14, 1999 9:58 pm
37	For MEGS try http://www.joates.demon.co.uk/megs/ There is also a site related to the magazine Morsum Magnificat - http://www.morsum.demon.co.uk/ I think. I...	Ian Reid 100533.3462@...	Nov 15, 1999 9:24 pm
38	To send Morse is a skill which takes time to develop. Some telegraphists no doubt reach close to the limits of human attainments and have controls of the level...	Geoffrey.Walsh geoffrey.walsh@...	Feb 21, 2000 7:28 pm
39	Hello Geoffrey I was very sorry to hear of the death of Harry Matthews. I had heard so much about him and regret not having had the opportunity of a personal...	Zyg Nilski zyg@...	Feb 21, 2000 11:05 pm
40	... Yes please do that. If you wish to edit the text before going to press please Email the adjusted version. I understand that someone is writing an obituary...	Geoffrey.Walsh geoffrey.walsh@...	Feb 22, 2000 7:41 am
41	Hi, Geoffrey and Zyg Further to Geoffrey's comment about Harry's obituary, you may like to know that this is being co-ordinated by Tom Stevenson (...	David Brown davidwbrown@...	Feb 22, 2000 8:39 pm
42	Someone yesterday drew my attention to an article in the Scotsman giving evidence that Oliver Lodge and a Patrick Muirhead were the first to �broadcast� a...	Geoffrey.Walsh geoffrey.walsh@...	Mar 18, 2000 5:43 am
43	Hi, Geoffrey A few other papers have now picked this story up too. Apparently, an exhibition of Lodge and Muirhead's work was to open this weekend at the ...	David Brown davidwbrown@...	Mar 19, 2000 5:32 pm
44	Not that I am a biographer of Sir Oliver Lodge but this is the first reference to any connection with Oxford that I have read. He was assistant prof of maths...	Zyg Nilski zyg@...	Mar 19, 2000 11:06 pm
45	... The following is taken from: 'Bright Lights' The Stevenson Engineers 1752 - 1971 ISBN 0 9535514 0 7 Published by Prof. Roland Paxton Heriot Watt...	Dave Pack david.pack@...	Mar 21, 2000 6:11 pm
46	CW is normally received by superhets. There is one or sometimes two frequency conversions, a beat frequency oscillator and often a sharp filter. The results...	Geoffrey.Walsh geoffrey.walsh@...	Apr 2, 2000 7:26 am
47	Hi Martin, and everyone else.... this is just to help Martin with his lost his adress book. We are all fine, I'm looking forward to my imminent 'retriral'.......	Chris Gill chris@...	May 13, 2000 10:19 pm
48	I have in my possession an electrical �magneto� housed in a varnished wooden box. When the handle is turned gearing and a belt drive caused an armature to...	Geoffrey.Walsh geoffrey.walsh@...	Jun 4, 2000 6:45 am
49	Can anyone tell me what Vinkor is? I think it has something to do with magnetic cores for transformers, but I'm not sure. Also, can anyone tell me if the...	Andy Dailey a.j.dailey@...	Jul 7, 2000 5:44 pm
50	Hi Andy As I recall, Vinkor was the name given to a range of ferrite core products which were available in the 60s and 70s for winding your own transformers. ...	rshivas@...	Jul 8, 2000 11:50 pm
51	Can anyone tell me about the history of the magneto. Who first made one ? Am I right in thinking that magnetos use a coil which rotates in a magnetic field....	Geoffrey.Walsh geoffrey.walsh@...	Aug 17, 2000 6:25 pm
52	Subject: Re: [museum-of-communication] Magneto ... internal-combustion ... turns ... 385 ... magnetic ... of ... no ... voltage ... closure ... which ... ...	Dave Pack david.pack@...	Aug 24, 2000 8:37 pm
53	I was recently doing a technical report on an early 1960's solid state receiver. On the inside back cover was a list of what each device did e.g.IF Amp. One...	Andy Dailey a.j.dailey@...	Oct 10, 2000 11:21 pm
54	Has anyone got any details of a WW2 Radar facility that was built in the Braid hills to the south of Edinburgh? I don't know if it was an operational station,...	Dave Pack david.pack@...	Nov 26, 2000 5:46 pm
55	I have lived in Liberton for years. I was told long ago that it was to do with Ferrantis and was secret, but I cannot verify this supposition. There must be...	Geoffrey Walsh geoffrey.walsh@...	Nov 26, 2000 6:51 pm
56	Try Colin Latham, e-mail: colin@... He has researched and written books on the history of radar. Zyg Nilski ...	Zyg Nilski zyg@...	Nov 27, 2000 11:50 am
57	In the first half of the 19 th century wire for electrical equipment will not have been available commerciall6y. I think I have read that in his experiments on...	Geoffrey Walsh geoffrey.walsh@...	Jan 15, 2001 6:24 pm
58	'The History, Theory and Practice of the Electric Telegraph' by George B. Prescott - 1866 (USA) - "The wire used for telegraph lines for the past 13 years has...	Zyg Nilski zyg@...	Jan 16, 2001 1:51 am
59	I wondered if large lengths or iron wire were used for fencing on farms by that time. If this is so there will already have been an industrial base which could...	Geoffrey Walsh geoffrey.walsh@...	Jan 16, 2001 2:01 pm
60	This is probably right, but I get the distinct impression that, in any case, they would have commissioned the manufacture of iron wire for overhead telegraph...	Zyg Nilski zyg@...	Jan 16, 2001 11:18 pm

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