NVIS Loop Antenna made simple
httpv://www.youtube.com/watch?v=cXAjIbMr3BY
Very young but very smart GEEK
httpv://www.youtube.com/watch?v=9MH0mw-Lgi0
Digital HF Receiver RDR54
Digital measurement and communication receiver with 17-bit analog-digital conversion and direct spectrum-based signal processing 0-31 MHz + 50 – 54 MHz. Stand-alone unit without PC, 230V power supply and speaker. Very high selectivity by 136 dB exact time-frequency transformation by newly developed principle. Many settings and display features (including waterfalls) on high contrast and fast…
PY1AHD Coca-Loop Initial tests
WOW! Portuguese language video
A20™ aviation headset for $1,095.95
* Designed to deliver significantly better noise reduction in even louder environments * Provides greater comfort and stability, with more room for your ears * Auxiliary audio input for GPS and other devices * Bluetooth® mobile phone connectivity * Meets or exceeds all FAA and JAA TSO requirements The Bose® A20 aviation headset is…