• Country
• Germany

• Manufacturer / Brand
• Monarch, Bremen

• Year
• 1963 ?

• Category
• Amateur Equipment (Other, but not Key)

• Radiomuseum.org ID
• 362464

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

• Number of Transistors

• Semiconductors
• 1N34

• Main principle
• Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: Field Strength Indicator FSI-1 - Monarch, Bremen

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 3.75 x 2.25 x 2 inch / 95 x 57 x 51 mm

• Notes

• Designed to monitor transmitter outputs in the 1.8 to 56 MHz range. Mainly used for CB or HAM radio purposes. Self powered (no battery required), uses RF energy for power, like Crystal Radio.

  Comes with a 200 µA meter movement and variable sensitivity control.

  Has an external antenna connection for a telescopic antenna that extends to approximately 10-3/4".

  Crystal earphones (like those supplied with transistor radios) can be used in for an aural check of output.

  The unit also came with a magnet attached to the bottom plate for mounting on car dashboard or metal surfaces.

  Similar to Lafayette TM-14

• Net weight (2.2 lb = 1 kg)
• 0 lb 7 oz (0.438 lb) / 0.199 kg

• Author
• Model page created by Charles Baetsen. See "Data change" for further contributors.

• Other Models

• Here you find 10 models, 8 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Monarch, Bremen