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.

 

Technical 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.