4 turns input 5 turns output Used material: 1 core of 73 material Fair-Rite 2873000202 Input = 4 turns / Output = 5 turns 4 square ...

Picture Schematics Number of turns left = number of turns right. L value: XL value @ 1 MHz 1 turn: 0,02 mH 125 Ohms...

Used material: 73 material Fair-Rite 2873000202 How to build and measure. 1) One core 2 turns left and 3 turns right. Input = 2 turns /...

Remark: all return loss measurements (SWR) are with a light inductive load (adjustable resistor). Real results are always better then sta...

Calculated coil value of the loop is 6.4 uH as explained in de 40 meter band loop. Target frequency = 1.858 KHz Calculated capacity valu...

Calculated coil value of the loop is 6.4 uH as explained in de 40 meter band loop. Target frequency = 3.700 KHz Calculated value for the...

Alu tube 22 mm diameter lengt = 6 meter ==> diameter loop = 2 meter. Small loop to insert the signal =1.30 meter for best SWR figures. At...

For people who are not used to work in dB. Loss compared to input signal. VSWR compared to Return Loss (dB

If you have a transmission line (coax or open line) with an unknown impedance, I will explain here how to measure this. Above: far end of...

The 1: 4 Guanella current Balun with FT240 - 43 core. Material used: FT240-43 (outer diameter is 2.4 inch material = 43) Just Google FT24...

Every impedance can be matched with the use of two components. Capacitor or inductor. Dependent of the place you are on the smith diagram...

I have made a vertical antenna with a lengt of 10 meters and two radials of 10 meters also connected to the ground. This antenna resonate...

How to measure antenna impedance? Different types of VNA can be used. When using a professional VNA (Agilent, R/S,…) the measuring cable ...