| AMATEUR COMMUNICATION RECEIVERS: STILL A CHALLENGE? The valve era Over the past forty years or so, communi- cation receiver design has under...
| AMATEUR COMMUNICATION RECEIVERS: STILL A CHALLENGE? The valve era Over the past forty years or so, communi- cation receiver design has under...
| here, but the Plessey SL620 and SL621C ics are well proven. This list shows that there is a good home-bred range of building blocks, althoug...
| 28 CAPACITORS FOR RF APPLICATIONS A brief overview of currently available devices in an electronic component group whose significance for te...
| 30 a) a) a) a) MN ._ ... . latiamitgarde 0 VI threshol I 10 10 20 kHz 12 140 dB 120 100 60 60 40 20 0 ...ram :Ph- En102 dB .10 -F 1 111M DEC...
| 36 PC AS TONE GENERATOR J. Schafer DL7PE A GW-BASIC program and a few modifications to the loudspeaker circuit enable any PC, whether an XT,...
| 38 SIMPLE TRANSMISSION-LINE EXPERIMENTS by Roy C. Whitehead, C.Eng., MIEE This article describes some simple transmission-line experiments t...
| Most applications for analogue switches fall into two categories: signal routeing and signal conditioning. Different process- ing technologi...
| 44 THE DIGITAL MODEL TRAIN PART 6 by T. Wigmore The sixth part in the series deals in detail with the Booster Unit. Each of these amplifiers...
| 48 INTERMEDIATE PROJECT A series of projects for the not-so-experienced constructor. Although each article will describe in detail the opera...
| CENTRONICS MONITOR A. Rigby The Centronics interface standard is often said to be without problems in practical use. When a malfunction occu...