How Your radio Works

How Your radio Works

 Page
100 mA U series3
1C760
1K760
1R561
2A760
300 mA P series3
6A760
6A860
6AN762
6BE661
6K862
6L766
6SA761
7.5 V A supply4
7A867
9 V A supply4
A MATTER OF BIAS80
A Supply1
A Supply - battery1
A Supply - mains2
A Supply - regulated4
A Supply, farm set11
A.M. rejection30
Aerial74
Aerial circuit68
Aerial lead-in77
AERIALS AND EARTHS70
AFC29
AGC50
AGC diode26
AGC, delayed50
Airzone 10587
Airzone 52588
Alexanderson, Ernst35
All-American Five Heater Chain3
All-Supply battery packs9
All-Wave Sets68
Amplification factor13
Anode bend demodulator25
Anode+Screen Feedback61
Anode-grid capacitance35
Anode-tuned L.O.65
Antenna74
Antenna, quarter-wave74
Armstrong, Edwin24, 37
Astor 6396/1239685
Astor Aladdin C.F.84
Audio faults - crossover distortion21
Audio faults - low output20
Audio faults, first audio - no output20
AUDIO STAGES12
Audion12, 24
Autodyne58
Autodyne limitations58
Automatic Bias - contact potential88
Automatic Bias - back bias84, 87
Automatic Bias - cathode bias86
Automatic Frequency Control29
Automatic gain control26, 50
Automatic volume control26, 50
AVC50
AVO CT160 (and converters)63
B Supply5
B Supply - batteries5
B Supply - genemotor6
B Supply - generator7
B Supply - mains5
B Supply - mechanical6
B Supply - solid-state6
B Supply - vibrator6
Balanced AC filament supply2
Barlow-Wadley51
Barretter detector22
Battery substitutes11
BC-AN-18946
BC-AN-229/42939
BC-AN-42936
Beam tetrode14, 16
Beat Frequency Oscillator27
BFO27
Bias - mains-derived84
Bias - screen grid90
Bias - series-connected filament88
Bias fault - high anode/screen voltages90
Bias fault - low anode/screen voltages90
Bias Faults - back bias91
Bias Faults - Leakage91
Bias Faults - Opens91
Bias Faults - shorts91
Bias faults - valves92
Bias voltage - diagnostic number one19
Biasing - The "C" Battery83
Bose, Jagadish Chandra22, 24
Branly, - douard22
Braun, Ferdinand12, 23
Buffer capacitor6
C - bias patent8
C battery83
C Supply7
Cathode bias87
Cathode bypass86, 87
Cathode ray tube12
Cathode-bias circuit89
Cathode-grid feedback (converter)61
Cat's whisker diode24
C-bias patent25, 81, 83
Class A15
Class AB115
Class AB215
Class B15, 17
Class B transistors18
Class B Triodes17
Coffin set35
Coherer22
Contact potential8
Contact potential bias - measuring89
Conversion conductance63
Conversion gain57, 59
Converter stage46
Converters separate oscillator59
Converters - testing63
Crosley 608 Neutrodyne38
Crosley Gembox86
de Forest, Lee83
De-emphasis29, 30
Delayed AGC26
Demodulator diode27
DETECTORS AND DEMODULATORS - A.M.22
DETECTORS AND DEMODULATORS - F.M.28
Deutsche Kleinempfanger25
Diode-pentode26
Diode-triode26
Directly-heated valves2
Dual-wave receiver I.F.51
Dummy antenna78
Duo-diode pentode26
Duo-diode triode26
ECH3566
Eddystone 770U48
Edison effect8
Effective signal pickup77
EK361
EK9067
Electrodynamic speaker9
Electrolytic23
Electrolytic capacitors, re-using10
Ether78
Ether fallacy78
F.M. receiver I.F.51
Farm set4
Fault - excessive hum10
Fault - low-gain superhets69
Faults - detector/demodulator32
Faults - F.M. demodulators34
Faults - grid leak/ anode bend demodulators32
Faults - I.F. amplifiers54
Faults - intermittent demodulator32
Faults - power supply10
Faults - R.F. amplifiers52
Faults - superhet63
Faults - superhet demodulators33
Faults - suspect I.F.64
Faults - suspect L.O.64
Faults - TRF and R.F. amplifiers41
Faults single-stage regenerative demodulators32
Faults, R.F. - intermittent reception53
Faults, R.F. - low gain53
Faults, R.F. - oscillation54
Ferrite rod72
Fessenden, Reginald22
Filter capacitors9
Filter, pi-section9
Filter, resistance-capacitance9
Filters9
First detector46
Fleming diode23
Fleming, John12
Forward drop, copper-oxide11
Forward drop, silicon diode11
Foster-Seeley discriminator28
Frequency-changing58
Galena detector24
Gated-beam demodulator30
Germanium diode demodulator19
Grebe, Albert36
Grid leak demodulator25
Ground plane73
Harmonic mixing68
Hazeltine, Louis37
Heptode60
Hertz, Heinrich22
High-side injection47
High-vacuum valves24
Homodyne31, 50
I.F. and converter screens51
I.F. breakthrough44
I.F. neutralisation52
Identifying converters66
Image response43
In-band images48
Indirectly-heated cathode3
Inductance/permeability tuning67
Inner grid injection60
Intermediate frequencies46
Intermediate frequencies - common51
Intermediate frequency44, 45
Intermediate frequency amplifiers51
Ion controller83
Kinkless tetrode16
L.O. circuit, Hartley61
Langmuir, Irving24
Leader LSG-1177
Limiter29, 30
Local Oscillator57
Local oscillator description59
Loctal67
Loop aerial72
Loopstick72
Lowenstein, Fritz8, 25, 83
Low-side injection47
Marconi, Guglielmo23
Michelson and Morley78
Microvolts per metre75
Modulator57
Monarch 452 BN52
Motorboating9, 11
Motorola Pixie88
mu13
Mutual characteristics80
Neutrodyne37
Neutrodyne adjustment37
Octal5
Octode61
Operating point81
Operating Point - power stages81
Operating Point - voltage stages, resistance coupling82
Operating point - voltage stages, transformer coupling82
Oscillation Valve23
Oscillator injection59
Outboard triode oscillator62
Outer grid injection60
Padder63
Padder feedback66
Parallel filaments4
Peanut valves4
Pentagrid60
Pentagrid Circuits65
Pentagrid L.O. - tuned transformer65
Pentagrid oscillator section60
Pentragrid L.O. - anode+screen feedback65
Performance - typical figures69
Perrin, Jean12
Phase-locked loop31
Philips 199C73
Philips battery eliminator84
Pickard, G.W.24
Power Supplies, voltage-doubling10
Power grid demodulator25
POWER SUPPLIES1
Pre-emphasis29
Privat-Ear19
Product detector27
Pulse-counting demodulator32
Q factor35
R.F. Amplifier, resistance-capacitance coupled40
R.F. transformer coupling40
Radiation resistance74
RADIO FREQUENCY STAGES35
Ratio Detector29
Rectifier - ionic6
Reflexing16
Regeneration25
Regenerative demodulator25
Reinartz coil25
Rimlock5
Round, Captain H.J.45
RU TRF46
SCR-55244
Selenium rectifiers5
Sensitivity testing and measurement53
Series filament4
Series heater string3
Series-connected filament chain8
Shorts, anode-cathode10
Shorts, heater-cathode10
Single sideband transmission27
Slope demodulator28
Slope detection - F.M.28
Spark gaps77
SSB27
Stone, John83
Stopper resistors35
Superhet alignment68
Superhet improvement
images48
selectivity49
sensitivity47
Superhet R.F. stages40
Superheterodyne37
Suppressor (in converter)61
Synchrodyne50
Synchrophase36
The Ether of Space79
THE SUPERHET Part 143
THE SUPERHET part 257
Thermionic diode23
Thompson, J. J.12
Tone control - burned-out20
TR193544
Tracking error43
Transit-time effects60
Travis Detector - F.M.28
TRF - VHF designs40
TRF receiver bandwidth35
TRF/RF faults - low/no sensitivity41
TRF/RF faults - oscillation/whistles42
Triode demodulator24
Triode-heptode62
Triode-hexode62
Triode-hexode/Triode-heptode Circuits66
Triode-pentode14, 16
Tuned loop aerial77
Tuned Radio Frequency receivers35
Tuned-circuit phase demodulators (F.M.)28
Tuning ratio47
Valve rectifiers, replacement11
Variable selectivity51
Vertically-polarised signals76
Voltage-current phase shift75
Westector24
Wheeler, Harold37
X61M62
X7962
Zero-Bias Class B83
Zero-bias valves7