austintilly Posted May 4, 2013 Share Posted May 4, 2013 Can anyone provide me with more information about this item? Quote Link to comment Share on other sites More sharing options...
g0ozs Posted May 4, 2013 Share Posted May 4, 2013 Arjan The EMERs (repair instructions) are available from the Wireless Set No. 19 group at http://www.royalsignals.org.uk/testgear.html - at a guess its purpose can be deduced without retrieving them as "TMS" is likely Telegraph Measuring Set. One of the curators of the WS No. 19 archive is a member here and may be able to confirm or deny my guess ! The documents are dated 1947 so probably just post-war manufacture. Regards Iain Quote Link to comment Share on other sites More sharing options...
Diana and Jackie Posted May 5, 2013 Share Posted May 5, 2013 My Guess, without a front on photo, is either it's a line (telephone) loss measuring oscillator, or an audio oscillator used for a variety of tasks including measuring power output of a transmitter. Diana Can anyone provide me with more information about this item? Quote Link to comment Share on other sites More sharing options...
fv1609 Posted May 5, 2013 Share Posted May 5, 2013 Its listed in my 1952 Schedule of Army Telecommunications Test Equipment. It was made by Muirhead for measuring gains & losses Use from Unit to Base. Comprising an oscillator 100c/s to 40kc/s & an attenuator to 50db Standard output: 1mW +/- 0.25db into 600 ohms Variable output: Continuously variable +6 to -50 db Line system: Unbalanced 600 ohm termination Measurement of high levels up to +30 db by a separate input Uses Supply unit TMS No.1 Mk 2 that requires 110-250v at 40-60c/s or 12v battery EMER TELS Y 140/1 Quote Link to comment Share on other sites More sharing options...
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