High efficiency 9:1 Ununs for EFRW (End Fed Random Wire) antennas

 - From 250W up to 5KW SSB -

- From 160 up to 10m -

*** Goal of 9:1 Ununs ***

• Those 9:1 ununs aim at being used with End-Fed Random Wire antenna

*** Performances ***

• All units are fully tested prior to being shipped
• From 160 up to 10m, SWR < 1,3:1 and efficiency > 97,5%, no power waste !
• Never trust someone saying a single FT240-43 can handle 1KW ! A well-design transformer based on such toroid can handle 600-700W SSB only. And yes, 1x FT140-52 will handle more power than a FT240-43
• Don't forget to mitigate your power if you have SWR (Cf attached chart)

*** 250W ***

• 1x FT140-43 from Fair-Rite
• Dual-coat enameled 1.3mm wire (210°c, 10Kv)
• 10x7cm IP67 enclosure with 4 mounting holes (easy to fix on a mast)
• 1x Small ventilation valve to avoid condensation
• Input = SO239, PTFE insulated
• Output = M4 stainless steel, A4-grade screw with wing nut
• Counterpoise/radial connection = M4 stainless steel, A4-grade screw with wing nut
• Stainless steel eyebolt on top for strain relief

*** 1KW ***

• 2x FT140-52 from Fair-Rite
• Dual-coat enameled 1.5mm wire (210°c, 10Kv)
• 10x7cm IP67 enclosure with 4 mounting holes (easy to fix on a mast)
• 1x big ventilation valve to avoid condensation
• Input = SO239, PTFE insulated
• Output = M4 stainless steel, A4-grade screw with wing nut
• Counterpoise/radial connection = M4 stainless steel, A4-grade screw with wing nut
• Stainless steel eyebolt on top for strain relief

*** 2KW ***

• 2x FT240-52, fiberglass protected, from Fair-Rite
• Dual-coat enameled 1.5mm wire (210°c, 10Kv), PTFE protected
• 11x9cm IP67 enclosure with 4 mounting holes (easy to fix on a mast)
• 1x big ventilation valve to avoid condensation
• Input = SO239, PTFE insulated
• Output = M4 stainless steel, A4-grade screw, with ceramic insulator, with wing nut
• Counterpoise/radial connection = M4 stainless steel, A4-grade screw with wing nut
• Stainless steel eyebolt on top for strain relief

*** 3KW ***

• 2x FT240-61, fiberglass protected, from Fair-Rite
• Dual-coat enameled 1.8mm wire (210°c, 10Kv), PTFE protected
• 11x9cm IP67 enclosure with 4 mounting holes (easy to fix on a mast)
• 2x big ventilation valves to avoid condensation
• Input = SO239, PTFE insulated
• Output = M4 stainless steel, A4-grade screw, with ceramic insulator, with wing nut
• Counterpoise/radial connection = M4 stainless steel, A4-grade screw with wing nut
• Stainless steel eyebolt on top for strain relief

*** 5KW ***

• 3x FT240-61, fiberglass protected, from Fair-Rite
• Dual-coat enameled 1.8mm wire (210°c, 10Kv), PTFE protected
• 11x9cm IP67 enclosure with 4 mounting holes (easy to fix on a mast)
• 2x big ventilation valves to avoid condensation
• Input = SO239, PTFE insulated
• Output = M4 stainless steel, A4-grade screw, with ceramic insulator, with wing nut
• Counterpoise/radial connection = M4 stainless steel, A4-grade screw with wing nut
• Stainless steel eyebolt on top for strain relief

*** Ship worldwide ***

Any questions ? please drop me a message !

Made by a ham, for hams

73