HF receiver reception failure factor
Sosin, Boleslaw Marian.
Marconi Communication Systems Limited.
Chelmsford Marconi Communication Systems Ltd
1974
English, Spanish, German and French summaries
'Comparison between HF communication receivers' (fold. sheet) as insert
'Revised edition of article in "Point-to-point communication", volume eighteen, number one, January 1974'
Shortwave radio