gas 44 Posted August 3, 2011 Share Posted August 3, 2011 (edited) Hiya,can anybody help please. I am looking for the device used when a vehicle is moving to secure the mp48 mast poles. It appears to "clip"to the mast and then fasten to the front of the vehicle,I have only seen this device from a distance and when the vehicle was moving. So if anyone can point me in the direction to purchase one (have tried the normal places and a good sniff around at W/P) or could let me have a photo/picture and dimensions I would be well pleased. Thanks in advance Gary Edited August 3, 2011 by gas 44 spelling.......AGAIN Quote Link to comment Share on other sites More sharing options...
egdod Posted August 3, 2011 Share Posted August 3, 2011 The item which you refer to is known as a antenna tie down..the most information i have found is on the jeep forum (g503) just look in the radio section i think the guys name is willy....nice name if jeeps are your thing!!!!! Dave Quote Link to comment Share on other sites More sharing options...
Chris Warne Posted August 3, 2011 Share Posted August 3, 2011 (edited) Sadly, most antenna tie-downs you see are incorrect, but as the correct items are now very hard to find, I suppose that justifies it. This is what you need for a correct US WW2 antenna tie-down: 1. 'P' clip - this slides over the actual antenna rod and is allowed to slip up/down the antenna. It is not fixed/tightened onto the antenna. It's a galvanised flat metal clip shaped like a letter P when viewed from the side, with an inset brass ring that your tie-down rope is looped through. 2. RP-5 tie-down rope. This is a 'multi-weave' cotton rope, about 1/4" thick, either in white (early war) or a shade of OD (OD coloured anti mould/fungus preservative was applied) RP-5 rope came, if I recall correctly, in 15ft lengths, in sealed paper/foil (early) or 'plastic film' (late OD type) wrappers. 3. IN-86 insulator. There are 3 types I know of, and these were placed around 2ft from the P clip, effectively insulating the antenna from the vehicle body should the rope become wet or otherwise conductive, and connected the RP-5 rope that run between the antenna(P clip) and IN-86 and then IN-86 to vehicle anchor point. A common version is a brown cylindrical insulator about 3inches long, with 2 screw-in eyes, one at each end. 4. Each join in the antenna sections (where they screw together) should have a securing clip slipped over the join and this has 2 screws to tighten it. This is to prevent the sections becoming unscrewed/coming loose. I don't believe there was a hook/clip to attach the RP-5 rope to the vehicle body, but I used a spare spring type clip from a ground antenna setp on my Halftrack. Willy might be able to help with P clips, but I think I had the last of them from him about 3 years ago. He might have sourced some more though. RP-5 rope is not easy to locate, but try Pierino (I think) on the G503 as he had alot of the early white ropes NOS a few years back. He also had a few IN-86. Search the Radio section for MP-48 or MP-48-A and you should find his posts from around 2007. If you really get stuck and want a correct tie-down, I could be persuaded to part with a complete setup with the later OD treated rope....I also have a couple of the securing clips for the Blue and Red antenna sections, but none of the small ones. I also have an original MP-48-A antenna base, not one of the current repros being passed off as originals (almost had an argument with a well-known dealer at Stoneleigh over his 'original' bases!) - although they are good - this also came from Pierino in Italy. Edited August 3, 2011 by Chris Warne Quote Link to comment Share on other sites More sharing options...
gas 44 Posted August 5, 2011 Author Share Posted August 5, 2011 Sadly, most antenna tie-downs you see are incorrect, but as the correct items are now very hard to find, I suppose that justifies it.This is what you need for a correct US WW2 antenna tie-down: 1. 'P' clip - this slides over the actual antenna rod and is allowed to slip up/down the antenna. It is not fixed/tightened onto the antenna. It's a galvanised flat metal clip shaped like a letter P when viewed from the side, with an inset brass ring that your tie-down rope is looped through. 2. RP-5 tie-down rope. This is a 'multi-weave' cotton rope, about 1/4" thick, either in white (early war) or a shade of OD (OD coloured anti mould/fungus preservative was applied) RP-5 rope came, if I recall correctly, in 15ft lengths, in sealed paper/foil (early) or 'plastic film' (late OD type) wrappers. 3. IN-86 insulator. There are 3 types I know of, and these were placed around 2ft from the P clip, effectively insulating the antenna from the vehicle body should the rope become wet or otherwise conductive, and connected the RP-5 rope that run between the antenna(P clip) and IN-86 and then IN-86 to vehicle anchor point. A common version is a brown cylindrical insulator about 3inches long, with 2 screw-in eyes, one at each end. 4. Each join in the antenna sections (where they screw together) should have a securing clip slipped over the join and this has 2 screws to tighten it. This is to prevent the sections becoming unscrewed/coming loose. I don't believe there was a hook/clip to attach the RP-5 rope to the vehicle body, but I used a spare spring type clip from a ground antenna setp on my Halftrack. Willy might be able to help with P clips, but I think I had the last of them from him about 3 years ago. He might have sourced some more though. RP-5 rope is not easy to locate, but try Pierino (I think) on the G503 as he had alot of the early white ropes NOS a few years back. He also had a few IN-86. Search the Radio section for MP-48 or MP-48-A and you should find his posts from around 2007. If you really get stuck and want a correct tie-down, I could be persuaded to part with a complete setup with the later OD treated rope....I also have a couple of the securing clips for the Blue and Red antenna sections, but none of the small ones. I also have an original MP-48-A antenna base, not one of the current repros being passed off as originals (almost had an argument with a well-known dealer at Stoneleigh over his 'original' bases!) - although they are good - this also came from Pierino in Italy. Hi Chris, The contacts I had have drawn a blank re the parts I want. So can I persuade you to part with the one on offer along with the securing clips. If you could pm me your tele no I will call you to sort out payment. Thanks Gary Quote Link to comment Share on other sites More sharing options...
Chris Warne Posted August 15, 2011 Share Posted August 15, 2011 Sorry for the lack of reply, I've been away on hols and then Damyns Hall (which took me a week to recover from - brilliant!). I have 1 complete rope assembly that is excess to my needs, but I need to check how many spare IN-86 and RP-5 ropes I have, as these are the key items you need for an accurate tie-down. The 'P clip' (or something very similar) can be made from commercially available metal cable clips, so I may be able to help a few others (judging by the number of PM's!!) with getting a correct tie-down for their vehicle. I will confess to being something of a hoarder, and unless I need to part with something, I usually keep things stashed away - just in case. Gary, drop me a pm and make me an offer. :-) Back soon...... Quote Link to comment Share on other sites More sharing options...
Chris Warne Posted August 15, 2011 Share Posted August 15, 2011 (edited) Here's a picture of the correct items. Early (white) RP-5 rope, various IN-86 (I have the larger cylinder type on the far right), P Clip at top left and the antenna 'securing' clips, although in reality the sections never came undone on my Half-track. Edited August 15, 2011 by Chris Warne typo Quote Link to comment Share on other sites More sharing options...
gas 44 Posted August 17, 2011 Author Share Posted August 17, 2011 Hi Chris PM sent. Gary Quote Link to comment Share on other sites More sharing options...
gas 44 Posted September 10, 2011 Author Share Posted September 10, 2011 I would just like to say thanks for everyones input. Special thanks to Chris and in no short measure HMVF without it I suppose a lot of people would be up the creek :-) Gary Quote Link to comment Share on other sites More sharing options...
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