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Everything posted by gordonb

  1. It isn't a balun as you are going from unbalanced co-ax to an unbalanced whip. I believe from memory that it is an auto transformer designed so that there is a DC path from the whip to ground/vehicle chassis in case of contacting overhead power lines. It may or may not work effectively on 2m. Being designed for the mil band the ferrite may not be suitable. I think I would remove it and just feed the co-ax straight to your quarter wave whip cut for 2m. Or you could do some tests with and without it to some distant friend and try and see if the received signal strength changes with and without it.
  2. I was told the tale that an MAN wrecker was sent out to Canada and MAN remotely killed it because they thought it had been stolen. The Army were not amused because at the time they did not know MAN had the capability. I have also been shown the switch on the dash board that bypasses all the things that would normally stop it so you can at least limp it off the battlefield if a sidelight blows.
  3. MFJ is an american manufacturer of amateur radio kit. Gordon
  4. 24v FFR is designed for radio fit so everything is screened. Coil, plugs, alternator, distributor etc etc. So you won't get bits in Halfords. Unless you want to fit radios why have to buy two batteries when they die? You see what I'm saying, unless you need the 24 volts stick with conventional bits and bobs and 12 volts.
  5. Speaking as a Ferret driver with elderly ears I have found that the Clansman kit doesn't really cope with the background noise at normal road speeds. That is using standard A vehicle headsets, the ANR ones might be better. I am though advised by someone who knows that some IB boxes are better than others. Indeed the IB3 I know has an internal adjustment for audio level. I've wound mine up this winter but have yet to see if has made any difference.
  6. He is active on other fora. His call sign is his father's, re-issued. gmb
  7. Not sure about RCU but that looks awfully like a "Crew Box 2 Set" in which case there will be two sockets on the bottom labelled Audio which are logically enough for head/handsets. The two 12 way connectors, assuming there is one on the other side, are labelled Harness and are used for daisy-chaining crew boxes and the IB2 or IB3 interface box. Also things like the Commanders Box. I believe in armoured vehicles the daisy chain was taken back to the IB box so as to create a harness ring main, giving some redundancy in case of damage.
  8. I accept you are doing this installation from documents but speaking as an operator I would be swapping the 320 and 351 around. As shown the 320 would be a right pain to set up and adjust because of control access and visibility. The 351 is designed to be adjusted from above, so to speak, whereas with the 320 you need to be looking at it from the front.
  9. Bog standard R1155 HF receiver as used in most Brit medium to heavy aircraft and air-sea rescue launches. Commonly called a"Lancaster" radio. Not particularly heavy as for airborne use but some were in steel as opposed to aluminium cases so would be heavier. The pictured one looks pretty tatty and rusty but seems virtually unmodified, which is quite rare nowadays. They need a fairly specific power supply which in practice means home built. I wouldn't put power anywhere near it without a close internal inspection. There are lethal voltages in there and if it still has the original rubber insulated wiring it will have crumbled away to dust.
  10. When I was driving Series Landrovers every day (civvy not mil) we found the best seating was the standard base but with the de-luxe back. Note this is not the base as in the 90/110/Defender but a bigger non-sculptured base. Cheap and cheerful but did the job.
  11. I'm told that acetone is a very good carrier for the light oil of your choice to make an excellent penetrating oil.
  12. Selling poppies with the Ferret on sunday I overheard someone say "look at the army jeep". I kept my mouth shut!
  13. Assuming Clansman which I guess is correct for a CVRT then you don't actually need a radio, the intercom is separate. The radios just plug into the intercom system, they are not part of it.
  14. I remember upsetting the gate guard at I think Chatham Barracks when in my frog-eye Sprite because he couldn't get his wheelie mirror under it, it being too low. I think he only let me in because I was in uniform.
  15. R216 receivers and power supplies. Larkspur era VHF receivers. Gordon
  16. Some years ago I was being given the run-around trying to register an MGB which had sat idle for 30+ years, and for which I had all the relevant paperwork. Not much happened until I started the on-line complaint procedure then things moved quickly.
  17. Was very quiet today. There doesn't seem to be as many traders as in previous years. And not much on tracks.
  18. Agree with starting off with the local CO, he will know, or find out, how to take it further up the chain. The other year I "came across" a 25pdr that had apparently been abandoned and made enquiries via the relevant CO. He was very helpful and I eventually got an official reply back saying that the gun was an ex gate guardian and was due to go to Malta so not for sale/disposal.
  19. Well someone has very recently bought the Wessex that lived for years in the car park at Crowborough Camp, so it must be possible.
  20. Anyone understand Japanese enough to get these files?
  21. The Morris/Hotchkiss thing affected Morris engines in MG cars certainly up to the post WW2 TC, and no doubt others. Metric (non-ISO) threads but Whit/BSF bolt head sizes!
  22. You are correct, the earlier elements were twice as long as the ones you have but they never seemed to alter the label. Gordon
  23. The one thing a quick look at there does not seem to be an end piece i.e. the top of the mast. It's in your 7th photo! Gordon G7KNS
  24. The rectangular connector is for a remote lead from a clansman battery to the radio. Used in cold weather so that the battery could go inside the operator's clothing to keep it warm. As shown the upper terminal is positive. It screws onto the battery. The circular connector is I think the general power connector in vehicles. Not used on radios.
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