For a more detailed view of the above spec please click on the picture to download the PDF file.   Typical band-pass characteristics of this 1.2/1.3GHz band-pass filter.   Further details will appear here soon.	Filter will be housed in waterproof cabinet on site. Low loss "N" type connectors. Enclosure size for filter:   32cm(L) * 6.5cm(W) * 7.5cm(H)

The filter above has been custom built for the group by a good friend of ours from the USA, Jim Malone WA3LBI. Jim is one of the most respected professionals in microwave in the US and he had his team custom build this for the BH group after hearing about the radar problems. 

This filter is due to be fitted on the GB3HV receive antenna and is tuned to 1308 centre frequency. This should eliminate all radar. This will be confirmed when the next trip to site takes place