Is There Anybody Out There?
Planned actions for the SDR patch antenna today included lowering the QRM and investigate the substantial Intermodulation Distortion (IMD). A little research provided insight into the role that the coax braid plays with a patch antenna – basically the braid is the antenna. It also transpires that many people have… [Read More]
An HF antenna that has a physical capture area of around 60mm x 40mm? Yeah right. The SDRs at MP need an antenna that is some distance away from the building, to escape both intense RF fields from transmission antennas around the structure, and other QRM from the vast range… [Read More]
The high winds recently appeared to impact the 5775 repeater by inducing noise onto transmissions – notably on lower strength received signals. The antenna was the prime suspect and on Sunday 8th, the wind kindly abated so we could investigate. The antenna was removed, and the radome joiner persuaded to… [Read More]
A radio, a spool of wire, a measuring tape and a pair of wire cutters along with perfect weather; what more does one need? Despite strong winds the day before, Jan 1st brought a sunny calm day, so an early start for Fun in the Park day was on. With… [Read More]