A dual band 40-80 vertical antenna on an 18m Spiderbeam Fiberglass Spiderpole, with monoband performance
Ionospheric propagation maps MUF and critical frequency
A reproduction test of a a binocular ferrite core and winds a total of 7 turns is a patented rf choke with an unusual winding, although this winding scheme reduces the inductance, it might result in a much larger bandwidth over which the choke has a sufficiently large impedance. The Author test this model by reproducing the choke.
A simplified operating guide for the Yaesu FT-817
Reception of the IARU/NCDXF International Beacon Project from Trent, Germany with daily reception reports of HF IARU/NCDXF beacons.
This interface is perfect to operate the ICOM IC706 MKIIg with a pc-headset,in VOX or with PTT.
A comprehensive and exhaustive review of Yaesu FTDX101 transceiver. Article is in Italian and can be easily translated in your language