Heathkit B-1 80-10 M 75 to 300 Ohm Balun


This classic well built Heathkit 80-10 M balun was designed to match 75 ohm coax to 300 ohm balanced line (300 ohm TV twinlead could be used) at 250 W AM and higher power on SSB.  Will work with 52 ohm coax with a small mismatch. 

It is 9 inches square and 5 inches deep and has an aluminum case.  Not weatherproof but could be put outside in a plastic box to run coax into the house. 

Has SO-239 coax input and two nut and bolt type insulator outputs and comes with a print of the manual, which can be found at:


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  • Callsign : ve6tc
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  • Item Condition : Used
  • Payment Types Accepted : eTransfer, Money Order, Cash
  • Used Condition : Good
  • Shipping and Pickup : Will ship at cost., Pickup offered., Will deliver locally.