• Country
• United States of America (USA)

• Manufacturer / Brand
• Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

• Year
• 1969–1982

• Category
• Commercial Transmitter & Receiver (TRX not Amateur)

• Radiomuseum.org ID
• 207356

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

• Number of Transistors
• 22

• Semiconductors

• Main principle
• Transceiver; ZF/IF 11700/455 kHz

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

• Power type and voltage
• Storage and/or dry batteries / 15 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 cm = 2 inch

• Power out
• 0.5 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: HT220 - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 2.75 x 7.58 x 1.23 inch / 70 x 193 x 31 mm

• Notes
• First commercial transceiver using integrated circuits (custom Motorola, one in IF of rx, one in audio processing of tx). Available in VHF (136-174 MHz) and UHF (406-512 MHz). Two thicknesses, "slim line" (1.23" plus antenna) and "omni housing" (1.8") were made, and two heights, carrier-squelch (8") and "PL" (Private Line, tone squelch, 7" tall). Standard version has one or two channels (separate receive and transmit crystals), up to 6 channels with a rotary selector switch. Uses rechargeable NiCd or nonrechargeable Hg or alkaline battery. Available with internal speaker/mic, remote speaker/mic, and "universal" (detachable remote speaker/mic.) May special "SP" versions made including transmit-only in red case for personal alarms, "Converta-Com" model with contacts on front for vehicle charer/interface, different kinds of tone squelch, etc. Many aftermarket vendors of synthesizers, scanner adapters, multi-frequency kits, etc.

• Net weight (2.2 lb = 1 kg)
• 1 lb 9 oz (1.563 lb) / 0.709 kg

• External source of data
• Motorola service manual

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by David Josephson. See "Data change" for further contributors.

• Other Models

• Here you find 4508 models, 2955 with images and 4002 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)