Guanella 2/1 current balun
Picture: Upper core = FT240-43 1:1 curent balun Lower core = FT240-43 1:4 Guanella current balun Wires are wound in a different way! Take...
Guanella 2/1 current balun
The use of a line output transformer core to make a balun.
Receiving loop antenna with 3 turns i.s.o. 2 turns.
Receiving loop antenna for indoor or portable use.
Loop On Ground Antenna
Guanella 1/6 current balun.
Guanella 1/9 current balun.
Building a QRO 1/49 transformer for end fed antenna.
The Turrin balun
Guanella 2 wire balun versus Ruthroff 3 wire balun.
The Ruthroff balun (1/1 3 wire version).
Guanella balun 1: 1 comparison between two and four conductors.
Building and measuring a Guanella 1:4 balun with Wurth cores 74270191
1/1 Current Balun with 15 turns on Wurth core 74270191 for better low frequency behavior.
1/1 Current Balun with 10 turns on Wurth core 74270191
Measurements on output transformer final amplifier TS440.
Measurments on Kenwood YK-88CN CW Narrow filter.
Measurments on muRata CFJ455K 14
Analysis of a Kenwood TS 440 filter unit.
Bandpassfilter for 80 meter band (3.5 MHz) with Amidon T50-2 cores.