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Broadband common mode choke balun
A 1:1 balun or RF line isolator for remove RFI
post 28 Jan 2024
Toroid & balun Links →
Balun for S-match
In the design of one of my ATU's, the balun using T200A-2 toroid is mounted between two PCB disks and located in between the 50 uH roller-inductor and the 12 - 1200 pF vacuum capacitor
Balun per antenna longwire
Questo UN-UN puo' essere impiegato in abbinamento a diversi tipi di antenne,sia per SWL che per ricetrasmissioni sulle bande Radioamatoriali
Balun per vertical antenna
Si montera' allora il balun sul palo immediatamente sotto la grossa antenna e si fara' salire il breve tratto bifilare che collega l'uscita del simmetrizzatore fino allo stilo centrale ed ai radiali
Balun 4:1 - 1:1
A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cables
Balun Theory
Voltage-type baluns produce equal and opposite voltages at the balun's balanced port. Since low impedance antennas are current fed, a balun that produces equal and opposite currents at its output over a wide range of load impedances is desirable
202
In the design of one of my ATU's, the balun using T200A-2 toroid is mounted between two PCB disks and located in between the 50 uH roller-inductor and the 12 - 1200 pF vacuum capacitor
Questo UN-UN puo' essere impiegato in abbinamento a diversi tipi di antenne,sia per SWL che per ricetrasmissioni sulle bande Radioamatoriali
Si montera' allora il balun sul palo immediatamente sotto la grossa antenna e si fara' salire il breve tratto bifilare che collega l'uscita del simmetrizzatore fino allo stilo centrale ed ai radiali
A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cables
Voltage-type baluns produce equal and opposite voltages at the balun's balanced port. Since low impedance antennas are current fed, a balun that produces equal and opposite currents at its output over a wide range of load impedances is desirable
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free