Balun unun

49:1 Unun This is a unun (unbalanced to unbalanced) transmission line transformer designed to match 2450Ω  to 50Ω.  It has a constant impedance transformation ratio of 49:1 from 3.5MHz to 50MHz. The efficiency is 98 percent.   T echnical specification: Type:                                               49:1 Unun Frequency:                                      3.5MHz – 50MHz Turns ratio:                                       1:7 Impedance ratio:                              1:49 Input Impedance:                             50Ω Output Impedance:                          2450Ω Power Handling(CW/SSB):             400W /800W and 1KWW of peak power Core Type:                                      2 X FT240-43 by Fair-rite® Co. Wire type:                                          Enamel copper wire 1.6 mm (AWG 14) Insulation type:                                PTFE DataSheet https://drive.google.com/file/d/1S1elWdoXfEATrETknFhi2TUgbdtZ9Q-a/view?usp=sharing   Package Contents You get what you see. FT240-43 (2) core by Fair-rite® winding with   Enamel copper wire (AWG 14) Capacitor 100pF 40KV 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.

49:1 Unun This is a unun (unbalanced to unbalanced) transmission line transformer designed to match 2450Ω  to 50Ω.  It has a constant impedance transformation ratio of 49:1 from 3.5MHz to 50MHz. The efficiency is 98 percent.   T echnical specification: Type:                                               49:1 Unun Frequency:                                      3.5MHz – 50MHz Turns ratio:                                         1:7 Impedance ratio:                                1:49 Input Impedance:                             50Ω Output Impedance:                          2450Ω Power Handling(CW/SSB):             250W /500W and 700W of peak power Core Type:                                      FT240-43 by Fair-rite® Co. Wire type:                                          Enamel copper wire 1.6 mm (AWG 14) Insulation type:                                 PTFE DataSheet https://drive.google.com/file/d/1r9Qpbxz4fwuYs779XAs-TcX6fF-9VoyL/view?usp=sharing Package Contents You get what you see. FT240-43 core by Fair-rite® winding with   Enamel copper wire (AWG 14) Capacitor 100pF 40KV 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.