• Country
• United States of America (USA)

• Manufacturer / Brand
• Hal Communications, Urbana

• Year
• 1973 ?

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

• Radiomuseum.org ID
• 286974

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 50-60 cycles, 115/230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mainline ST-6 TU - Hal Communications, Urbana

• Shape
• Tablemodel, with any shape - general.

• Notes

• The HAL Communications Mainline ST06 TU is a solid-state RTTY unit.

• Price in first year of sale
• 280.00 USD

• Mentioned in
• QST (January 1973 page 159)

• Author
• Model page created by Wayne Childress. See "Data change" for further contributors.

• Other Models

• Here you find 13 models, 13 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hal Communications, Urbana