VK6FH WEBSITE INDEX                            

INDEX PAGE 2
Introduction - (About me page) AWA company collapse 1987
Economical Valve Audio Power Amplifier
6CM5/EL36 		Economical Valve Audio Power Amplifier
"Eu version" 25E5/PL36
Telephone Ring Generator Mk I Telephone Ring Generator Mk II
DTMF decode store and display Mk I DTMF decode store and display Mk II
The Siemens Neophone Linesman's Buttinski circuit
X-Y CRT Indicator
 Digi-display for CRO
CRO trace doubler Millersweep sawtooth oscillator
The Lambda (λ) Diode The Schottky Diode (& transistor)
100/200/400 Hertz - Frequency Reference Kalitron oscillators
Pocket sized Metal Detector Metal Detector with only 4 components
Transformer Design Simple high curent DC voltage-regulator
Battery Charger Voltage regulator for Car Alternator
13.8 Volt 20Amp DC Supply (SMPS) Radio 'B' battery circuit (DC/DC converter)
Voltage Multiplier circuits Volt, Amp, Ohm Meter (Analogue)
Power & Voltage ratio in Decibels E explained (2.71828 naperian logs)
In-circuit Transistor Tester Transistor curve tracer for CRO
FET (Power Mosfet) tutorial CMOS buffered/unbuffered 'The TRUTH'
FET Dip Meter (HF) FET Dip Meter & Impedance Bridge
FET connections Single Mosfet FM wireless-mic
LC Meter (PIC16F84A based) Frequency Counters - 2 designs
Coaxial cable: Impedance & Standing Waves - Couplers
Magnetic Loop Antenna (MF & HF) Remote Tuned Magnetic Loop Aerial
HF Antenna Tuner (manual) SGC Antenna Tuner (Auto)
Log-Periodic Antennae 50 MHz 4 element Yagi Aerial
RF conductivity SKIN EFFECT & Litz wire RF conductivity SILVER PLATING
Magic Eye Demonstration EPROM burner/programmer
Restoration of "old" Radio Transmitter Pre-emphasis & De-emphasis - FM broadcast
FREMODYNE - VHF receiver "Pulse-counting" type VHF FM radio tuner
HF valve receiver - regenerative 1 Valve Regen' receiver 12 DC Volt powered
A "CIGAR BOX" RADIO (B'cst Band) MK484 based radio designs
H.F. SUPERHET receiver Mk I H.F. SUPERHET receiver Mk II
H.F. SUPERHET/HOMODYNE rcvr Mk III AM VHF Air-band Receiver (passive)
Icom R8500 DBM I.F. mixer mk1 Icom R8500 MOSFET I.F. mixer mk2{WIP}
RF Mixer (diode ring) RF Mixer (cmos & mosfet)
RF Mixer - What is a DIPLEXER ? SDR - Software defined Radio (Q.S.D. )
SSTV - the Analogue Chronicles (c 1970's) MAR6 RF amp(VHF satellite S S T V rcvr')
Radio-teletype RTTY decode & display Delta Modulation
Electret microphone - Compressor Electret mic' needs no DC supply ?
Ultra Linear Audio Amplifiers - observations Audio Output Stage
WW 2 Radar letter band designations Hi-Z Bootstrapping - an explanation,
VHF Propagation #1 VHF Propagation #2
162MHz for PROPAGATIONIST's Yagi-type antenna for 162MHz AIS data reception        
Yagi-type antenna for "Digital"
TV reception         		Line Section Impedance Diagram
SWR meter (Reflectometer)     Handbuilt Rcvr uses EDDYSTONE 898 dial
Amateur Radio - MENTORING {VK3BB} Working esteemed persons on the ham bands ! (73 magazine)
Complimentary AWV QSL card 1960's Amateur Station - G5BD 1930's
Australian MW Broadcast stations - history
c 1923 - 1990 (Excel spreadsheet) 		US ham call zones
The "S" meter
 Potentiometers explained
Accu-Keyer IAMBIC morse keyer Roger bleep circuit
From the Serviceman Who Tells - (Nr1)
AM Car Radio for XY Ford Falcon 		From the Serviceman Who Tells - (Nr2)
Valve(Tube) based Audio Amplifier rebuild
INDEX PAGE 2





E-Mail:


counter
free counter