QSO Statistics for Year 2024
RIG: FT-891 (30 or 40W), random wire antenna or telescopic whip, Yaesu FC-50 autotuner, DigiRig interface
SSTV in 10m
During November, the 10m band provided great propagation conditions, combined, of course, with the high solar activity. These conditions...
How strong was the last geomagnetic storm ?
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...
QSO Statistics for Year 2023
RIG: FT-817ND and FT-891 (20W), random wire antenna, LDG Z817 / Yaesu FC-50 autotuner, DigiRig interface
Finally, I decided what my new transceiver is
Yaesu FT-817ND was, for a long time, my only multimode and multiband transceiver, having really good results with random wires and whip...
WSPR signal improvement
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...
WSPR using Raspberry Pi
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),...
QSO Statistics for Year 2022
RIG: FT-817ND, random wire antenna, LDG Z817 autotuner, DigiRig interface DXCC Status 3D2F Fiji G ...
Some results regarding PCSI transmissions over APRS network
PCSI proves to be an efficient method of transmitting small images over APRS radio network. An 160x99px image can be recovered with...
PCSI tests over APRS radio network
PCSI stands for Packet Compressed Sensing Imaging and is a very nice project for sending images over unconnected and noisy radio...