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Kilowatt Matchbox 250-30

Kilowatt Matchbox 250-30; Johnson Company, E.F (ID = 1246539) Antenna
Kilowatt Matchbox 250-30; Johnson Company, E.F (ID = 1245130) Antenna Kilowatt Matchbox 250-30; Johnson Company, E.F (ID = 1245131) Antenna
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Kilowatt Matchbox 250-30; Johnson Company, E.F (ID = 1245130) Antenna
Johnson Company, E.F: Kilowatt Matchbox 250-30 [Antenna] ID = 1245130 900x554
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For model Kilowatt Matchbox 250-30, Johnson Company, E.F.; Waseca, MN
 
Country:  United States of America (USA)
Manufacturer / Brand:  Johnson Company, E.F.; Waseca, MN
Brand
 
Viking
Year: 1960 ?? Category: Antenna (Aerial) or Coupler
Main principle RF-Circuit or wave trap (separate, can also be an antenna with amp.)
Wave bands Wave Bands given in the notes.
Details
Power type and voltage No Power needed
Loudspeaker - - No sound reproduction output.
Power out
from Radiomuseum.org Model: Kilowatt Matchbox 250-30 - Johnson Company, E.F.; Waseca,
Notes E.F. Johnson advertising description: Kilowatt Matchbox – Band switching 80, 40, 20, 15 and 10-11 meters – self-contained. Use with transmitters up to 1000 watts input - handles unbalanced line, impedances from 50 to 1200 ohms and balanced line impedances from 50 to 2000 ohms. No coils to change, no “tapping down” on the inductor. Fully Shielded. Provision for RF probe. Not wired for directional coupler and indicator.
Price in first year of sale 125.00 $
Literature/Schematics (1) July 1960 QST Magazine

Model page created by Charles Hugg. See "Data change" for further contributors.



All listed radios etc. from Johnson Company, E.F.; Waseca, MN
Here you find 62 models, 52 with images and 27 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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