ΜΙΑ ΩΡΑΙΑ ΠΑΤΕΝΤΑ ΣΕ ΚΕΡΑΙΑ ΓΙΑ ΕΚΠΟΜΠΗ ΑΜ

ΜΙΑ ΩΡΑΙΑ ΠΑΤΕΝΤΑ ΣΕ ΚΕΡΑΙΑ  ΓΙΑ ΕΚΠΟΜΠΗ ΑΜ

Shown below is my 1^st prototype of an A.M. broadcast antenna for 1610KHz.

Don't laugh!!!….it's resonant, has a 1.1:1 VSWR, and works AMAZINGLY well.

The goal was to keep it under 9.8 feet in length to comply with FCC part 15.219.

Tuning is very touchy and bandwidth is always narrow for such short antennas for

1.6MHz operation. The capacitive "hat" (a pieplate) was my lazy way of lowering

the frequency by adding capacitance. To be strictly FCC legal you should

resonate your antenna without the capacitive "hat".

ΔΙΑΒΑΣΤΕ ΑΝΑΛΥΤΙΚΑ  ΕΔΩ

http://web.archive.org/web/20020202230810/http://www.onr.com/user/ct/1610khz.htm