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Hybrid Balun 1:2 (25 Ω to 50Ω)  1- 30MHZ  1KW which consists of a unun 1 :2 RF transformer (25 Ω unbalanced to 50 Ω unbalanced) followed by a common-mode choke 1 :1 (25 Ω balanced to 25 Ω unbalanced). incorporates for higher feedline isolation and RF choking.   This unit balun (balanced to unbalanced) transmission line transformer  designed to match 25Ω  to 50Ω used to match inverted L's,Yagi 20-25 Ohm driven elements directly without the need for matching networks, like gamma, T-match, or hairpin matching and other  unbalanced  antennas with low feedpoint impedance. Thus the currents are distributed more evenly about the conductors.  The power rating is 1KW of continuous power and 2KW of peak power.  It has a constant impedance transformation ratio of 1:2 from 1MHz to 30MHz.  The efficiency is 99 percent       Technical specification: Type:                                               1:2 unun Frequency:                                      1MHz – 30MHz Input Impedance:                             50Ω Output Impedance:                           25Ω Typical insertion loss:                       less than 0.15 dB Power Handling(CW/SSB):             800W /1KW and 2KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Coaxial cable  by Habia Cable®    Insulation type:                                PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Coaxial cable  by Habia Cable ®    Assembled and tested.     SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

This unit unun (unbalanced to unbalanced) transmission line transformer  designed to match 25Ω  to 50Ω used to match inverted L's,Yagi 20-25 Ohm driven elements directly without the need for matching networks, like gamma, T-match, or hairpin matching and other  unbalanced  antennas with low feedpoint impedance. Thus the currents are distributed more evenly about the conductors.  The power rating is 1KW of continuous power and 2KW of peak power.  It has a constant impedance transformation ratio of 1:2 from 1MHz to 54MHz.  The efficiency is 99 percent       Technical specification: Type:                                               1:2 unun Frequency:                                      1MHz – 54MHz Input Impedance:                             50Ω Output Impedance:                           25Ω Typical insertion loss:                       less than 0.15 dB Power Handling(CW/SSB):             1KW /2KW and 3KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Coaxial cable  by Filotex®    Insulation type:                                PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Coaxial cable  by Filotex ®    Assembled and tested.   This transformer requires a feed line choke to isolate the coax feed line from the antenna.   SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

1:1 BALUN. To feed a balanced feed line (antenna) with an un-balanced line (coax,TRX). To choke off common mode currents     Technical specification: Type:                                               1:1  Balun Frequency:                                      2 – 75Mhz Input Impedance:                             50Ω Output Impedance:                          50Ω Minimum Choking Impedance:        1.5KΩ @ 1.8MHz Maximum Choking Impedance:       +10kΩ @ 20~60MHz Typical insertion loss:                       less than 0.05 dB Power Handling(CW/SSB):             800w /1Kw Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                        50Ω coax (RG142) by Filotex® Insulation type:                               PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with 50Ω coax by Filotex® Assembled and tested   SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

2.5:1 Unun This is a hight-power unun (unbalanced to unbalanced) transmission line transformer designed to match 125Ω   to 50Ω.  It has a constant impedance transformation ratio of 2.5:1 from 1MHz to 70MHz. The efficiency is 98 percent   T echnical specification: Type:                                               2.5:1 Current Balun Frequency:                                      1MHz – 70MHz Input Impedance:                             50Ω Output Impedance:                          125Ω Typical insertion loss:                       less than 0.15 dB Power Handling(CW/SSB):             600W /1KW and 2KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Enamel copper wire 1.6 mm (AWG 14)   Insulation type:                               PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Enamel copper wire (AWG 14) Assembled and tested.   This transformer requires a feed line choke to isolate the coax feed line from the antenna.     SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.  

2:1 Unun This is a hight-power unun (unbalanced to unbalanced) transmission line transformer designed to match 100Ω   to 50Ω. It has a constant impedance transformation ratio of 2:1 from 1MHz to 30MHz. The efficiency is 98 percent   Technical specification: Type:                                               2:1 Current Balun Frequency:                                      1MHz – 30MHz Input Impedance:                             50Ω Output Impedance:                          100Ω Typical insertion loss:                       less than 0.15 dB Power Handling(CW/SSB):             600W /1KW and 2KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Enamel copper wire 1.6 mm (AWG 14)   Insulation type:                               PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Enamel copper wire (AWG 14) Assembled and tested.   This transformer requires a feed line choke to isolate the coax feed line from the antenna.     SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

4:1 Balun 12.5Ohms to 50Ohms This is a very hight-power unun (balanced to unbalanced) transmission line transformer  designed to match 50Ω  to 12.5Ω. It is capable of high power levels because it uses  low-impedance coaxial cable instead of wire-bifilar windings.  Thus the currents are distributed more evenly about the conductors.  The power rating is 2KW of continuous power and 5KW of peak power.  It has a constant impedance transformation ratio of 4:1 from 1MHz to 75MHz.  The efficiency is 99 percent. This balun is great for matching low impedance antennas such as Cobwebs, Yagi and NVIS dipoles mounted close to ground level.      Technical specification: Type:                                               4:1 Balun Frequency:                                      1MHz – 75MHz Input Impedance:                             50Ω Output Impedance:                          12.5Ω Typical insertion loss:                       less than 0.15 dB Minimum Choking Impedance:        1KΩ @ 1.8MHz Maximum Choking Impedance:       +5kΩ @ 20~60MHz Power Handling(CW/SSB):             2KW /3KW and 5KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Coaxial cable  by HABIA CABLE®    Insulation type:                                PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Coaxial cable  by HABIA CABLE®    Assembled and tested.   SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

4:1 Unun 12.5Ohms to 50Ohms This is a very hight-power unun (unbalanced to unbalanced) transmission line transformer  designed to match 50Ω   to 12.5Ω. It is capable of high power levels because it uses  low-impedance coaxial cable instead of wire-bifilar windings.  Thus the currents are distributed more evenly about the conductors.  The power rating is 5KW of continuous power and 10KW of peak power.  It has a constant impedance transformation ratio of 4:1 from 1MHz to 50MHz.  The efficiency is 99 percent     Technical specification: Type:                                               4:1 unun Frequency:                                      1MHz – 50MHz Input Impedance:                             50Ω Output Impedance:                          12.5Ω Typical insertion loss:                       less than 0.15 dB Power Handling(CW/SSB):             5KW /7KW and 10KW of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                           Coaxial cable by HABIA CABLE®   Insulation type:                                 PTFE   Performance See Performance Plots   Package Contents You get what you see. FT240-43 core by Fair-rite® winding with  Coaxial cable by HABIA CABLE®   Assembled and tested.   This transformer requires a feed line choke to isolate the coax feed line from the antenna.   SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

Hybrid Balun 4:1 (12.5 Ω to 50Ω)   1- 54MHZ   1KW which consists of a unun 4 :1 RF transformer (12.5 Ω unbalanced to 50 Ω unbalanced) followed by a common-mode  choke 1 :1 (50 Ω balanced to 50 Ω unbalanced). incorporates for higher feedline isolation and RF choking. The 1:1 Guanella on the TX side and the 4:1 (unun) on the ANT side. Performance See Performance Plots. SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.

Hybrid Balun 4:1 (12.5   Ω to 50Ω)  1- 54MHZ  1KW which consists of a unun 4 :1 RF transformer (12.5   Ω unbalanced to 50 Ω unbalanced) followed by a common-mode  choke 1 :1 (50 Ω balanced to 50 Ω unbalanced). incorporates for higher feedline isolation and RF choking. The 1:1 Guanella on the TX side and the 4:1 (unun) on the ANT side. Performance See Performance Plots. SHIPPING We ship worldwide from French by Registered Air mail with tracking number. Your item will be shipped next business day once payment received. Delivery time depends on destination and Customs, usually it takes about 10-25 business days.