ABOUT GRIMSBY WEBSDR

The WebSdr is located in Grimsby IO93XN and is run by Chris G1HZN, the webserver is based on software written by PA3FWM, more details can be found at : http://www.websdr.org/

The WebSDR is based on the very cheap mini digital TV sticks , more commonly known as rtl dongles, these devices were originally intended for terrestrial digital tv and not the reception of weak radio signals more information can be found at : http://www.rtl-sdr.com.

BANDS COVERED

11m Band : 26.800 - 28.000 MHz Citizen Band

10m Band : 28.000 - 28.900 MHz Amateur

6m Band : 50.000 - 52.000 MHz Amateur

2m Band : 144.000 - 146.000 MHz Amateur

Es'hail-2 / Qo100 geosychronous amateur radio 10Ghz narrowband downlink : 10489.550 - 10499.000 Mhz

ANTENNAS USED

11m - End Fed 1/2 Wave

10m - End Fed 1/2 Wave

6m - End Fed 1/2 Wave

2m - Colinear 2/70

X- Band 10 Ghz down link - 100 cm offset dish

Why a WeBSDR

Why another sdr radio over the inter-net, what’s different about this one, the main reason for setting up the Grimsby sdr is to provide local radio amateur & CB enthusiast with the facility to be able to see & monitor local radio communications traffic live.

Secondly the bands covered are in the upper Hf & lower Vhf parts of the radio spectrum, these bands are highly influenced by radio propagation known as sporadic E & tropo, (tropospheric ducting) to provide long distant communications, so the sdr has been instantly transformed into a visual radio propagation monitor displaying openings as they happen live over the inter-net.