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1.1 current choke balun


A 1:1 balun It offeres a almost flat swr curve from 1 to 30 MHz
post 19 May 2024
1.1 current choke balun

Toroid & balun Links

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Balun HF 4:1
Un balun 1:4 realizzato per alimentare una windom 40 20 e 10 metri

Simple balun
With these three wires I made 18 windings around the ferrite rod

A balun using ferrite rod
so here's some tips to help you make 1:1 and 4:1 current type Baluns that will save you some cash! You need

Constructing a 6:1 RF transformer
These notes primarily relate to the construction of 4:1 Unbalanced to Unbalanced, Ruthroff voltage transformers UnUn, where one end of the windings are connected to ground


23cm Yagi Antenna building

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

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

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