Yeoman Posted March 2, 2018 Share Posted March 2, 2018 Hi All, ref ws19 -I am needing to make up a coax cable to run from the 'A' set aerial socket to the variometer.From 'Wireless for the Warrior' I understand that the coax should be of 80 ohm impedance - I can find 50 ohm easily but not 80 ohm.What coax cable should I use? I understand that the length should be 42" - is this critical or is the length more to do with where the variometer is situated within the ws19 set up? Sorry if this sounds a silly question but I am new to military radios so any help/advice that you can give would be much appreciated. Thank you. Kevin. Quote Link to comment Share on other sites More sharing options...
43rdrecce Posted March 3, 2018 Share Posted March 3, 2018 Kevin, I think I may have an original. Give me 24hrs or so to have a look and I'll message you. Regards Paul Quote Link to comment Share on other sites More sharing options...
Yeoman Posted March 3, 2018 Author Share Posted March 3, 2018 Hi Paul, Thank you very much for your reply - if you do have a spare one that would be great. All the best. Kevin. Quote Link to comment Share on other sites More sharing options...
Diana and Jackie Posted March 4, 2018 Share Posted March 4, 2018 On 3/2/2018 at 10:36 AM, Yeoman said: Hi All, ref ws19 -I am needing to make up a coax cable to run from the 'A' set aerial socket to the variometer.From 'Wireless for the Warrior' I understand that the coax should be of 80 ohm impedance - I can find 50 ohm easily but not 80 ohm.What coax cable should I use? I understand that the length should be 42" - is this critical or is the length more to do with where the variometer is situated within the ws19 set up? Sorry if this sounds a silly question but I am new to military radios so any help/advice that you can give would be much appreciated. Thank you. Kevin. Television down lead is 75 Ohms and near enough to 80 Ohms that it can be used and you will see no difference whatsoever at the frequencies used by a WS19 Diana Quote Link to comment Share on other sites More sharing options...
Yeoman Posted March 8, 2018 Author Share Posted March 8, 2018 Hi Diana, Thanks for your reply - I hadn't thought of tv cable so will bear that in mind as an option. All the best, Kevin. Quote Link to comment Share on other sites More sharing options...
armouredfarmer Posted March 9, 2018 Share Posted March 9, 2018 I had a conversation about this with Louis Meulstee some years ago when I was working on the IWMs Dorchester ACV, he suggested RG-213U 50 Ohm coax as being close enough electrically and a good cosmetic mach. PT Quote Link to comment Share on other sites More sharing options...
Yeoman Posted March 11, 2018 Author Share Posted March 11, 2018 Hi PT, Thank you for your reply. Thats good to know that Louis Meulstee thinks that RG213U would make an acceptable replacement for the origenal cable.I will bear that in mind. All the best, Kevin. Quote Link to comment Share on other sites More sharing options...
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