Rick W Posted December 20, 2007 Share Posted December 20, 2007 (edited) Edited February 15, 2012 by Marmite!! photo link repaired Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted December 20, 2007 Share Posted December 20, 2007 It could be in a WW1 tank? Richard Quote Link to comment Share on other sites More sharing options...
fv1609 Posted December 20, 2007 Share Posted December 20, 2007 A garden shed? Quote Link to comment Share on other sites More sharing options...
Rick W Posted December 20, 2007 Author Share Posted December 20, 2007 Given recent posts Richard not a bad guess I suppose! No Clive , despite your superhuman powers of military knowledge, not a garden shed, a lot heavier! And no windows to speak of! Quote Link to comment Share on other sites More sharing options...
woa2 Posted December 20, 2007 Share Posted December 20, 2007 Looks like the radio set-up in the Titanic. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted December 20, 2007 Share Posted December 20, 2007 Rick, Unless you a devious like Clive and giving your photos spoof titles, I got a clue from the title which said "sponson". That is the name of the projecting part of the hull on the side of some WW1 tanks and I know that radio was tried out in them. Richard Quote Link to comment Share on other sites More sharing options...
Rick W Posted December 20, 2007 Author Share Posted December 20, 2007 Very astute Mr F.! No red herrings, though I should of in retrospect! Any idea what WW1 vehicle it was though? Quote Link to comment Share on other sites More sharing options...
ArtistsRifles Posted December 20, 2007 Share Posted December 20, 2007 The Mk V tank?? Quote Link to comment Share on other sites More sharing options...
Rick W Posted December 20, 2007 Author Share Posted December 20, 2007 No, but good guess. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted December 20, 2007 Share Posted December 20, 2007 MkIV............am sure I have seen a photo of one with the aerial on it. Quote Link to comment Share on other sites More sharing options...
fv1609 Posted December 20, 2007 Share Posted December 20, 2007 I suspect it is a later version of this, complete with wood panels in a particularly heavy & waterproof means of transport. http://img.photobucket.com/albums/v684/fv1620/App0705.jpg[/img] Quote Link to comment Share on other sites More sharing options...
Rick W Posted December 20, 2007 Author Share Posted December 20, 2007 That looks like the inside of a U Boat Clive! What is it?? Quote Link to comment Share on other sites More sharing options...
fv1609 Posted December 20, 2007 Share Posted December 20, 2007 That looks like the inside of a U Boat Clive! What is it?? Yes, April 1925 experiments in communication on the 30 metre band on HM Submarine H43 http://img.photobucket.com/albums/v684/fv1620/App0706.jpg[/img] Quote Link to comment Share on other sites More sharing options...
Tony B Posted December 21, 2007 Share Posted December 21, 2007 That looks like a Damped Spark, coherer set. I'd love to get my hands on one. They were also fitted to Type B , Old Bill buses for ground use. Quote Link to comment Share on other sites More sharing options...
fv1609 Posted December 21, 2007 Share Posted December 21, 2007 That looks like a Damped Spark, coherer set. I'd love to get my hands on one. They were also fitted to Type B , Old Bill buses for ground use. What does that all mean, Tony? BTW Rick your picture has gone very low resolution. Quote Link to comment Share on other sites More sharing options...
Rick W Posted December 21, 2007 Author Share Posted December 21, 2007 Yes, picture has gone low res, its all gone a bit odd on its photobucket original! But Neil was the closest. Wireless setup on a Mark 1 Female tank I do believe. http://i117.photobucket.com/albums/o72/rik242_2006/mk1femalewireless.jpg[/img] Quote Link to comment Share on other sites More sharing options...
Tony B Posted December 21, 2007 Share Posted December 21, 2007 The Coherer was the first transmitting 'Valave'. it consisted of two vacuum glass tubes with aluminum powder in them . when a current was passed trough one a spark jumped across the gap. this caused radio wave generation http://home.earthlink.net/~lenyr/coherer.htm This guy explains it better. Quote Link to comment Share on other sites More sharing options...
fv1609 Posted December 21, 2007 Share Posted December 21, 2007 The Coherer was the first transmitting 'Valave'. it consisted of two vacuum glass tubes with aluminum powder in them . when a current was passed trough one a spark jumped across the gap. this caused radio wave generation http://home.earthlink.net/~lenyr/coherer.htm This guy explains it better. The link wouldn't work for me. This isn't a spark transmitter, these are thermionic valves, NT24 triodes. There are two rigs here, one on the 30 metre band for surfaced comms & the other on 10 metres experimenting with underwater transmissions. Not sure what you meant about "They were also fitted to Type B , Old Bill buses for ground use". But these things had massive power demands with a DC input of 3kw to the anode, hence the big Type 9 Transformer on the lower left. Rick, fascinating antenna system on the tank. I thought they just used pigeons & semaphore. Sorry to have hijacked the thread but it made me dig out this old report on cutting edge comms in 1925. Fascinating document, circuit diagrams, photos, signal strength versus time & date charts. H43 was in the English Channel but consistant signal pretty well from monitoring stations in Gibraltar & Malta. Quote Link to comment Share on other sites More sharing options...
Tony B Posted December 21, 2007 Share Posted December 21, 2007 Power demand was a killer, the so called 'Portable ' Great War sets needed two men to carry the kit and a dozen for the battries. not to mention having to stand up and erect an Ariel whilst under fire. no wonder the pigeon was used. Quote Link to comment Share on other sites More sharing options...
abn deuce Posted December 21, 2007 Share Posted December 21, 2007 the SIZE of the Tubes and those Insulators !!!! Looks like some serious voltages were being used.......seems to me the equipment at least looks like it could have have been more lethal to the operator than any result from the poor quality of the signal it was trying to transmit. Quote Link to comment Share on other sites More sharing options...
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