

An active passive for rtl-sdr up converter

Receiving antenna for lf/mf/hf as well a passive transmission and reception antenna for vhf/uhf
post 26 Jul 2024
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About NDBs
NDBs or Non-Directional Beacons inhabit 190kHz to about 500kHz, the large majority being between 200 - 430kHz
AMRAD LF Active Whip Antenna
You can tune into LF activity with this easy-to-build and erect active antenna
Antenne per il radioascolto
Valutare e provare quei circuiti tanto odiati e tanto amati che si chiamano antenne attive
A Very Simple Broadband Receive Loop
I chose to build the triangular loops because they are cheap, easy, broadband, and exhibit a bi-directional pattern on the lower bands
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NDBs or Non-Directional Beacons inhabit 190kHz to about 500kHz, the large majority being between 200 - 430kHz
You can tune into LF activity with this easy-to-build and erect active antenna
Valutare e provare quei circuiti tanto odiati e tanto amati che si chiamano antenne attive
I chose to build the triangular loops because they are cheap, easy, broadband, and exhibit a bi-directional pattern on the lower bands