#1
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antenna leads
I asked this question a few years back on the WS19 reflector with no success.
I bought these at a silent key sale 10 years ago....not knowing what they were but knowing someone, somewhere must be searching for them ;-) approx 30 ft long. ZC 14116. GL/R MkII Connectors twin No 2K I'm thinking BIG transmitter in a mobile role? WS10? The case is paxoline with the nomenclature plate missing, of course. There 3 leads but two have the 2 prong input leads hacked off. |
#2
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GL/R = Gun Laying Radar? (Just a guess.)
Is the cable twin or coaxial? I'm thinking the clamps on the (non-plug) end fit straight to the antenna (probably a folded dipole). Chris. |
#3
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coax
thanks for your thoughts Chris....
coaxial cable, when did 'we' start using this? I too thought some sort of feeder for a dipole...could be horizontal as the clamps rotate. and thanks....while photographing the coax I saw another 'Z' No. on one of the chopped leads. (initially i assumed it was the complete leads stock number.) therefore I suspect the initial ZC 14116 is for the 2 prong plug with; ZC 12795/10 for the clamped 'Y' fitting. Dipole for a radar? cheers, Brent |
#4
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possibly for WS53?
Hopefully I have answered my own query?
The image is the Ant Coupling Unit from the top of a local (30 miles away) museums WS53.... I took the pic 8 years ago and have just made the connection ~doh~ I realise the one in the image is a single prong socket but I don't know if its original, it was installed by a fantastic group of keen amateurs. All silent now. Still its only guesswork. The WS 53s Working Instructions state; "it also has a feeder plug for an 80 ohm feeder line to a dipole aerial." I'll take the lead up to the museum ('m a member) and see if it fits. if anyone has the equipment list from a WS53 equipped 3 tonner that may help? cheers, Brent Last edited by things_green; 14-08-16 at 02:50. Reason: doh, again |
#5
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That WS53 has been 'got at' by the look of things, and the output connector modified from a single-pin (coaxial) Niphan to something rather more recent.
The co-ax output from the WS53 used something very similar to the accumulator connectors (possibly 1 size smaller) and the WS19-style co-ax (Duradio No.1?) in (I think) 25-ft lengths with a Niphan connector on each end so they could be "daisy-chained". The dipole centre was bakelite or similar plastic, with a Niphan plug (male) and two nickel-plated brass bars with wing nut terminal to clamp the aerial wire. Aerial wire was the standard "Wire, Electric, R4" issued in 41 yard packets for making up non-standard length dipoles, and ready made dipoles (9A, 9B and 9C) on the wooden board spools were issued with the set. (41 yards is a deliberate length: it's a quarter wavelength at 2 MHz (with a bit left over for joints, etc.), so 2 packs will make you a dipole at the lowest frequency likely to be used. WS53 can go below 2MHz (1.6, I think) but it can cope with that much mismatch.) I have most of one of the dipole centres, bought in a 'mixed lot' of radio bits on eBay - which included a No.69 offensive grenade! (Fortunately inert, unfortunately tatty. Hence the tagline...) Chris. -- You know they're out to get you when you find a grenade in your morning mail. |
#6
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Quote:
Early radar operated at surprisingly low frequencies! The early sets operated on 54 - 84 MHz, SLC (Search Light Control radar was I think around 160 MHz or maybe 400), and so aluminium tube dipoles and small arrays would have been the order of the day. See: https://en.wikipedia.org/wiki/GL_Mk._I_radar Chris. (I googled for GL Radar!) |
#7
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~bows to the gnome~
brilliant sleuthing, thankyou Chris.....
I know the Silent Key was an early (1950s) Guru on the WS10 and radar, we had a WS10 set-up on the coast near here.... and then he went commercial and opened a repair and component supply shop...so he had some fascinating kit at his SK sale. GL/Radar seems, now , very very likely..... now to find someone operating or restoring one. I even have a Broad Arrow marked cavity magnetron. Thanks again for your insights. Brent Last edited by things_green; 16-08-16 at 06:01. Reason: forgot |
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