• Country
• Japan

• Manufacturer / Brand
• Kenwood, Trio-Kenwood Inc.; Komagane

• Year
• 1980 ??

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

• Radiomuseum.org ID
• 322625

• • alternative name: Trio Corp.
  • Brand: Jennen

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

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Antenna Tuner AT-230 - Kenwood, Trio-Kenwood Inc.;

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 180 x 133 x 287 mm / 7.1 x 5.2 x 11.3 inch

• Notes

• Trio-Kenwood Corporation, Antenna Tuner AT-230.

  Designed for use with the Kenwood HF Transceiver TS-830S.

  Consists of an adjustable antenna coupler, through-line wattmeter, SWR meter, and an antenna switch.

  Antenna Coupler
  Freq. Range:	1.8 to 29.7 MHz
  Thru Power:	200 W max
  Insert Loss:	Less than 0.5 dB optimum match
  Input Z:	50 Ω
  Output Z:	10 to 500 Ω, unbalanced
  Wattmeter
  Type:	Through-line
  Freq. Range:	1.8 to 30 MHz
  Measurable RF PWR:	Up to 20/200 W, switched
  Mode:	Forward or reflected power switched
  Accuracy:	Better than  ±10 % of full scale
  SWR Meter
  SWR Detector:	Toroidal core detection coupler
  Range:	1.1 to 10
  Min. Power required:	4 W

• Net weight (2.2 lb = 1 kg)
• 3.4 kg / 7 lb 7.8 oz (7.489 lb)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 881 models, 814 with images and 250 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kenwood, Trio-Kenwood Inc.; Komagane