YO3FVR

RIG: FT-891 (30 or 40W), random wire antenna or telescopic whip, Yaesu FC-50 autotuner, DigiRig interface

During November, the 10m band provided great propagation conditions, combined, of course, with the high solar activity. These conditions...

On 10th and 11th of May, all active hams in HF bands felt the huge effects of the geomagnetic storm over radio propagation. But, how...

RIG: FT-817ND and FT-891 (20W), random wire antenna, LDG Z817 / Yaesu FC-50 autotuner, DigiRig interface

Yaesu FT-817ND was, for a long time, my only multimode and multiband transceiver, having really good results with random wires and whip...

In my last post, I mentioned a WSPR experiment based on Raspberry Pi and the QRPi module. At that moment, the QRPi was connected directly...

Recently, I put into operation a 100 mW WSPR transmitter, based on the QRPi shield (https://www.tapr.org/pdf/DCC2015-QRPi-HA7DCD-1.pdf),...

RIG: FT-817ND, random wire antenna, LDG Z817 autotuner, DigiRig interface DXCC Status 3D2F Fiji G ...

PCSI proves to be an efficient method of transmitting small images over APRS radio network. An 160x99px image can be recovered with...

PCSI stands for Packet Compressed Sensing Imaging and is a very nice project for sending images over unconnected and noisy radio...