Single Antenna System(SAS)

This is a Single Antenna 10kHz-30 MHz receiving system, generally useful from 1kHz to 200 MHz. It is a larger version of the Field Probe and the original PreampA/2m-dipole projects. PreampA and SAS are low noise antenna system capable of approaching or achieving the ITU "Quiet Rural" regional noise limit over the entire LF-HF range when and where a suitable situation exists.

Like the other n6gn OSHW broadband receive system designs it is a highly symmetrical/differential probe. Because it uses a symmetric antenna rather than a monopole referenced to earth or to a radial system, as are many commercially available broad band antenna systems, it can provide much higher rejection of common mode feedline and ground noise that can easily reduce system performance. Also because it is a probe rather than a resonant/matched structure it is an extremely broad band system that can provide effective coverage from audio frequencies well into VHF.

A goal of this system is to approach performance dictated by regional noise limitations as described by Rec. ITU-R P.372-16 rather than by unwanted local noise sources present at a particular location.

Please see the N6GN Open Source Hardware pages for more detail of this preamp, the entire SAS system and many other projects.