Short-wave Manual: A Treatise on the Design, Construction, Operation and Adjustment of Short- and Ultra-short-wave Receivers, Aerials and Equipment, with Designs for Eight Short-wave ReceiversFrederick James Camm |
From inside the book
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Page 26
... metres and 100 metres . Nowadays , a range of from 9 metres to 180 metres is desirable , and recent experiments show that using low - loss ceramic insulated tuning condensers , a ceramic insulated coil - holder , and valve- base plug ...
... metres and 100 metres . Nowadays , a range of from 9 metres to 180 metres is desirable , and recent experiments show that using low - loss ceramic insulated tuning condensers , a ceramic insulated coil - holder , and valve- base plug ...
Page 43
... metres is equivalent to a frequency of 500 kilocycles , whilst a wave- length of 150 metres corresponds to a frequency of 2,000 kc / s or 2 mc / s . In the same way , a wavelength of 30 metres ( one - tenth of 300 metres ) is the same ...
... metres is equivalent to a frequency of 500 kilocycles , whilst a wave- length of 150 metres corresponds to a frequency of 2,000 kc / s or 2 mc / s . In the same way , a wavelength of 30 metres ( one - tenth of 300 metres ) is the same ...
Page 128
... METRES AND BELOW It is more than likely that a number of experimenters , in making their initial efforts to get results on 5 metres , have had considerable difficulty in " finding the band " . It is also very probable that a number of ...
... METRES AND BELOW It is more than likely that a number of experimenters , in making their initial efforts to get results on 5 metres , have had considerable difficulty in " finding the band " . It is also very probable that a number of ...
Contents
AN INTRODUCTION TO THE SHORT WAVES | 9 |
OPERATING YOUR FIRST SHORTWAVER | 14 |
BANDSPREAD TUNING | 18 |
Copyright | |
26 other sections not shown
Common terms and phrases
adjustment aerial coil aerial system amateur amplification anode arrangement B'casting band band-spread Bandoeng baseboard Broadcasting House Bulgin by-pass calibration capacity chassis circuit coil components conductor connected construction coupling Cuba dah dah dah dit dah dit dah Daventry detector stage detector valve dial diameter dit dit dit down-lead Dubilier earth Eddystone efficiency EIAR electrical enamelled wire experimenter filter fixed condenser former frequency grid coil H.F. choke H.F. stage Habana India Radio insulated kc/s length maximum megohm meter method metres mmfd mounted obtained ohm 1 watt ohms operation oscillator output p.m. Addr p.m. Daily panel pentode position potentiometer quench reaction condenser reception reflector Relays resistance screen selectivity short waves short-wave short-wave receiver shown in Fig signal strength slow-motion socket stations suitable superhet switch tapped terminal Trans transformer tuning condenser tuning range turns two-valve ultra-short-wave valveholder variable condenser watt resistor waveband wavelength whilst winding wire WPIT