New answers tagged

5

A choked end-fed antenna is (or acts just like) a highly off-center fed dipole, where the length of any stub between the common mode choke and the unun/transformer/feedpoint sets the off center ratio and thus the impedance at the antenna feed point. Your current 1 foot stub is less than 1% of the antenna, whereas a few percent is usually recommended, that ...


-3

Everyone knows that balun stands for Balanced to Unbalanced and is an AC electrical device which can be used as an impedance transformer and is also used to convert an unbalanced or single ended AC system to a balanced or differential AC system and vice versa. A common example of usage of this device is to enable an unbalanced coaxial transmission line to be ...


-1

I can agree with the answers above, but I see radio Amateurs just coiling up the coax feed cable at the base of the antenna, without the ferrite ring and this does choke off the RF in both directions (No transmitted power or received signals). I tried this with a half-wave long wire on a field day and demonstrated that with the coli present we could not be ...


Top 50 recent answers are included