Using an RF Choke on HF

[@BuShMaStEr0810]

Hello Pedro. Great RF Choke. Congrats. Habe you a Manual for dis Choke to Buil ? 73 good luck from HB9FZE, Stefan

[@ct7ahv]

The3DMoviemaker I made a lot of tests and measurements by myself, I tried different core mixes and stacks, made calculations of measured S-parameters... If you want a magical recipe to make a good RF choke, no, I don’t have it! Move your ass and start reading and learning about RF chokes, then start making some tests. When you have some juice come back and we can talk about your difficults and you can make all the questions you want. 73´s de CT7AHV

[@dapeeee]

Isch das en fräche siech☹ nimm am beschte en feritkern ft 240-31 oder ft 240-43 und suscht uf qrz.com findsch mini e-mail ich hilf der keis problem gruess us spanie 😉 übrigens bin in leuggern gebore und in döttige ufgwachse 👍😉 ea1izp

[@Mark300win]

is your radio connected to RF ground?

[@ct7ahv]

Yes it is! I have a dedicated ground for my station.

[@Mark300win]

@@ct7ahv i wonder why the ground couldnt help minimize this Common mode interference issue. Usually u dont need a choke if the RF ground is properly installed and has an impedence lower than 25 ohm

[@ct7ahv]

@@Mark300win the common mode current flows on the outside of coax shield and it doesn’t care if the radio is grounded or not. Grounding the station’s equipment only matters for operator safety and for static discharge, and obviously to prevent ground loops and non-equal zero potential

[@Py1axRADIOAMADORISMOSEMSTRESS]

Ok tks pelo vídeo muito bom pode se inscrever no meu tmb rsrsrs py1ax