Royal 705JM Ch= 7MT45Z8
- United States of America (USA)
- Manufacturer / Brand
- Zenith Radio Corp.; Chicago, IL
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- alternative name: Chicago Radio Lab
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- Main principle
- Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries / Batteries: "AA" 4 x 1.5 Volt
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm
- Power out
- 0.2 W (0.295 W max.)
- Leather / canvas / plastic - over other material
- from Radiomuseum.org
- Model: Royal 705JM Ch= 7MT45Z8 - Zenith Radio Corp.; Chicago,
- Very small Portable or Pocket-Set (Handheld) < 8 inch.
- Dimensions (WHD)
- 7.25 x 5.5 x 3 inch / 184 x 140 x 76 mm
The Zenith Royal 705JM is a portable, battery operated 7 transistor BC band receiver. The BC band frequency tuning range is 540 to 1600kHz. Uses Qty(4) "AA" batteries. Has RF stage and push-pull audio output stage. Also has earphone jack that disconnects the speaker for private listening. Has leather covered cabinet.
The Royal 705 family of radio's consisted of the following models that use the same schematics and cabinets:
Model Chassis Cabinet Color Royal 705JM 7MT45Z8 Brown Royal 705YM 7MT45Z8 Ebony Royal 705JM 7MT45Z9 Brown Royal 705YM 7MT45Z9 Ebony
The transistors are the only difference in the chassis.
NOTE: Beitman lists model Royal 705M, however this is an incomplete model number. The complete model numbers are listed in the table above.
- Literature/Schematics (1)
- - - Manufacturers Literature (Zenith Service Manual Model Royal 705M dated 5/7/65)
- Literature/Schematics (2)
- Photofact TSM Transistor Radio Series SAMS (TSM-66 dated February 1966 pages 147 to 150)
- Literature/Schematics (3)
- Beitman Radio Diagrams, Vol. 26, 1966 (Page 167)
- Model page created by Egon Penker. See "Data change" for further contributors.
- Other Models
Here you find 4397 models, 4005 with images and 3507 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Zenith Radio Corp.; Chicago, IL