• Country
• United States of America (USA)

• Manufacturer / Brand
• NEMS-Clarke Company, Silver Spring, Maryland

• Year
• 1963 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 331868

• • alternative name: Vitro Electronics; Maryland

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 6

• Valves / Tubes
• 1T4 1R5 1T4 1T4 1T4 1R5

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Tuned circuits
• 8 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1.5 & 67.5 Volt

• Loudspeaker
• - only for Earphone!

• from Radiomuseum.org
• Model: Field Strength Meter 120E - NEMS-Clarke Company, Silver

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• The Nems-Clarke 120E professional field strength meter has a built-in antenna loop and is factory calibrated to determine AM broadcast field strength from 10 microvolts per meter to 10 volts per meter.  Frequency coverage is 540 to 1600 kHz.   The set uses two 67.5 volt "B" batteries and five 1.5 volt "D" cells (in parallel for 1.5 volts filament).  Accuracy of attenuators is specified at 2%.  A special logarithmic meter is used with a sensitivity of 200 uA.  If not powered the meter is automatically set to below zero and should not be adjusted.  The second 1R5 is the calibrating oscillator.  A headphone of 10K ohms may be used but is not supplied.  The cover is spring-loaded so that the loop antenna is fully extended.

• Net weight (2.2 lb = 1 kg)
• 12.5 lb (12 lb 8 oz) / 5.675 kg

• Mentioned in
• - - Manufacturers Literature (manual)

• Author
• Model page created by Rich Post. See "Data change" for further contributors.

• Other Models

• Here you find 6 models, 5 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from NEMS-Clarke Company, Silver Spring, Maryland