For anyone interested there is a Marconi wave analyser on _bay
These are superb pieces of kit.
http://cgi.ebay.co.uk/MARCONI-WAVE-..._Measurement_Equipment_ET&hash=item3a5ab74b14
These are superb pieces of kit.
http://cgi.ebay.co.uk/MARCONI-WAVE-..._Measurement_Equipment_ET&hash=item3a5ab74b14