Jump to content

Marv

Member
 View Profile  See their activity

  • Posts

    746

  • Joined

  • Last visited

 Content Type 

Everything posted by Marv

  1. Marv
    Its certainly worth a shot
  2. Marv
    With regards to the actual search I'm afraid it looks like the Marconi route is a dead end. I received the following earlier today: John, I posted your message on the MOGS group and received the response pasted below. I also received a direct mail from a former Technical Director of Marconi Radar who opined: "This IF strip is not Marconi Radar nor from the Radiolocator series of the Marine Company. It does not look like a Marconi designed product at all." I'm sorry we can't help you further with your research. regards, *** Here is the original email: Hi My first though on seeing those photos was that they might perhaps be of an IF strip or similar but that's almost as precise as my saying it looks like a box with valves in it! I presume the comment..... "It is thought that the pieces which are shown originated from a video pulse amplifier strip from a radar set operating at about 30MHz".....should really be interpreted as the pulse amplifier operating at around 30MHz, rather than the radar set itself? :-) Despite the relatively modern B7G valve bases those photos look to be of something quite a lot older than the valve gear that was still coming through Elettra House when I was there in the early 70s. The apparent age isn't helped by the condition but it's certainly not like anything I've ever seen before, either within MIMCo or elsewhere, and the construction style doesn't match any other Marconi valve gear I've worked on either. From 1963 onwards Marconi Marine's head office was based at Elettra House in Westway, Chelmsford, where, as well as the offices, it had a Lab, Test Department, and Workshops, but it wasn't really a manufacturing company. MIMCo's business was installing and maintaining the shipboard installations, as well as providing the Radio Officers who operated and maintained them whilst at sea, and most MIMCo kit was manufactured by the actual Marconi Co, MWT as was, with a variety of other suppliers, including Eddystone for radio gear, Raymart, think that was the name, from Poole for some later radar equipment, etc. As well as the head office, MIMCo had depots in the major shipping centres around the UK and the comment about MIMCo being "based at Liverpool at this time" probably refers to the Fleetwood depot. If similar kit was donated in the 70s then, again, that would suggest it was already quite old by then, and if it did come from Fleetwood it could have been removed from a vessel during a refit, which also raises the possibility that it might not have been originally supplied by MIMCo anyway. Having said that, there are some interesting references to early Marconi post war marine radar developments, including an exterior photo of the Marconi Radiolocater, in "Forty Years of Marconi Radar from 1946 to 1986", a copy of which can be found here..... _www.radarpages.co.uk/download/p172.pdf_ (http://www.radarpage...wnload/p172.pdf) , but I have no idea whether or not that's relevant to this enquiry. Regards Disappointingly the referenced image doesn't show any internals of sets/equipment etc. On the basis of this last mail I really have no idea what direction to take now. I had hoped that this was going to be very positive.
  3. Marv
    Andy another alternative are the caps that cover mirror screws. These are easily obtainable at B&Q and will sit on a piece of 10mm pipe.
  4. Marv
    PM sent
  5. Marv
    I'm liking this, in all my talking of this being produced in a strip. I didn't consider how this would have been on the top corners
  6. Marv
    I wondering if those are mock up? Looking at TK895s picture the screen cans certainly look to dip into the space between the cylinders. But if these simply sit on the top of the chassis and don't sit in it (if I'm making sense) then there might never be a cut on the top????
  7. Marv
    Actually I am in error on this it would raise them slightly not push them out!!!
  8. Marv
    Screen cap?
  9. Marv
    Liking this I think the folded up parts at the front would extend to the center of the cylinder when seen as a flat piece of metal though. Try to consider it in a bigger strip. A press wouldn't have wastage. It may marginally push the cylinders out a little more but your talking only by a small amount (mms). It would be concentric to the next one and so forth.
  10. Marv
    Here is my masterpiece (its not) I've painted out a little bit of this pic but if you look in the centre there is a straight edge from the top capacitor to the one on the left. I think if you try and consider how this may have been made it makes sense (but so would your idea) if this was done by a pressed die it might be easier to cut a way one piece than have three separate punched holes? See what you think.
  11. Marv
    Andy I'll add something else to the picture I cut from TK895s shot. I think there is a straight edge.
  12. Marv
    I have never quite liked the templates I've seen I think there is one picture in here which really could shed some light on how this ought to be. I've trimmed it down a little to highlight where I am coming from: It may just be me but I think there is a triangular cut out section at the back, which would give enough room for the capacitors to pass as we know. This strip would have been produced in bulk, so if I think back to me engineering days (many moons ago) I'd think that this chassis as it is would have been created using a press. The folds cuts etc could have been done in one press of a heavy die. Where the metal is bent up to meet the cylinders there would almost be no gap. There wouldn't be rounding and I think the pressing of the front two sticky up bits (highly technical there) would possibly help determine the positioning of the cylinders? I reason that I think the template would be closer to this, long red lines implying cuts, dashes folds: Amended this slightly slightly On this the top corner and bottom would be the other side of the cylinder and lost when trimmed. I may try and do a pic from the front but my skills here are very limited.
  13. Marv
    Do you mean this one? I think that the reason why you may not see it, and why this is the case on the blasters too (varying from two to three to none) could simply be due to this uncovered fact that the capacitors appear to be connected to something else behind. Could it simply be because in most cases especially on the blaster where this strip is trimmed it would be reasonable to assume that as there is no connection on the other end of it any longer making the front connection somewhat weaker, and far more likely to break? I am hypothesizing.
  14. Marv
    I'm not so sure I can see any size difference at all from the picture that was posted below, the bottom two if you like hide the thirds length.
  15. Marv
    Me too I'm in that category, but likewise this looks like it is a statuet.
  16. Marv
    Ha-ha probably many years ago. Did you know the Stone Roses reformed? Though its the Two Leia's that gets my vote... 'far better than you could possibly image'
  17. Marv
    I think the dims were on an earlier page: Are they 26mm x 5mm, with 4mm end caps?
  18. Marv
    They really are Mouse Sized
  19. Marv
    Ha! no you have to read my edit. My posting was altered it obviously doesn't like the word pr*** Mathias - Andy I would suggest put in far more ground work than I. It was nice getting mail from him it simply helped spur you along. I heard from him today and I believe he is no longer in the search
  20. Marv
    Hi Vern, Andy I have spent an awful lot of time over the past months looking for this component, though to be honest both our interest has wained somewhat. I think that has come in part due to what were all looking for is most definitely going to be exceptionally hard to find. We covered ground on the Valve amps and we found that these were most likely to be Mullard EF-91 which were used in military equipment. The screeing cans on these are 18mm in diameter, which I think would make the cylinders approximately 8-10mm in diameter themselves. In our search going back a few months ago now, Andy and I determined that this was an IF strip from a radar set of some description, this led to various communications to museums and what not none of which could positively identify the strip, though pretty much all confirmed that this was an IF strip of some description. Our threads/leads led us to believe that these IF chassis may have once been part of either a Type 13/14 radar transceiver. Or possibly a 70MHz RAF receiver which was not very common. The chassis for which would have used the EF91 valves and may have been tuned to 9.72MHz.In fact we managed to find out that a military surplus store, now long closed down in Liverpool used to break down this type of equipment. We did however find out that his stock had come from RAF Sealand. RAF Sealand however has been long closed. Not all was lost. Sealand since its closure in 2006 was commandeered by the 'Defence Support Group (DSG)' which is responsible for the repair and maintenance of Avionic equipment operating as part of a Trading Fund of the Ministry of Defence. I wrote a blind letter to the DSG in the hope that someone could help. The response was somewhat unexpected, I actually heard back from the Head of DSG Electronics and Components himself. Though he did not know what the parts were himself he passed the pictures that Andy originally provided around the organisation. The strip was confirmed at operating at 30MHz the tuned circuits were pysically too small to be operating at the suggested 9.72 MHz. They had once had such equipment during the 70's it had been donated to their training school (unfortunately it had been long disposed of) and had been used on Radar. He suggested that this was manufactured by Marconi. I attempted a couple of other avenues one of which was a Museum in Chelmsford which has a Marconi meuseum but I never got anything back. With work and other projects on the go. I simply couldn't keep up the momentum. Though if PlayfulWolfCub hits on something new I may just p r i c k up my ears again
  21. Marv
    Hi Andy Thought I'd pitch in here. I recently was in conversation with Cal at Far Away creations. He sent me a mock up of a cylinder which he used on his mouse droid (the RPF thread of this is here). I though he would be a good source in terms of being able to possibly create a nice template for a set to sit on my E-11. The cylinders on the Mouse droid are apparently 84th scale. They measure 33.5mm in length. If my maths is correct this would make the actual size of the length (33.5/84)*100=39.88 I don't think this is correct at all! So am a little gutted by what I have. I'm not sure there is anyone there who is any the wiser than anyone her on the FISD about the origins of these pieces. With regards to your observations about the size of Russ cylinders I would agree 100% that his are too small. Andy and I discussed this at some length some time ago (but more on that later). Though I am still on the waiting list for a set
  22. Marv
    I brought some in the off chance I'd get armor. But have only ever used it for Football (Real term for soccer ). Cold Gear is gear made for the cold. You use and wear Cold Gear in colder temperatures. The apparel functions differently than heat gear does. Cold Gear has a thicker material and is made to keep body heat trapped insulated (without OVER heating). Heat Gear, on the other hand, is made for hotter temperatures & conditions. It is a lighter, thinner material meant to keep the body cool.
  23. Marv
    Thats more like it, though I do like the carbonate ones..
  24. Marv
    Hi Andy If I recall it was Andy19422 that originally sent me a copy of the speeder view image. I think finding originals of these is really going to be one heck of a needle in an almighty giant haystack. When you start looking you just end up chasing your tail.
  25. Marv
×
×
  • Create New...