antentopSince2 July

Ham Spirit
Free Choice



Free Antentop Amateur Open Book
Antentop Album
Antentop Survey




Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an

Special page devoted to

Broadband Indoor Antenna

Custom Search


ANTENTOP- 01- 2005, # 007

Broadband Indoor Antenna


Figure 2 Transformer 9:1



It is possible to increase frequency range of the transformer by decreasing number of its turns. After adjustment of the transformer at active load 600 Ohm connect the transformer to real antenna and do fine tuning by increasing/decreasing turns on 1-2 turns.



Box with RF transformers installed near a window

Figure 3 Circuit for testing of a working range of the RF transformer


Page 60


59 60 61 62 63 102 103 104 105 106 107



QRP Transceivers and PA from Accessible Parts IP for QRP Antentop Book Radio Antenna Engineering Book Antentop Printed and e- magazines



Just for Fun:

Map IP Address

Thanks for your time!

Last Updated:

February 22, 2020 21:24

Antentop Home Page

Free Antentop Open Book