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This page was last updated
on Wednesday April 16, 2008
For some interesting technical
information on the GB3HT control logic and other projects click on the antenna
INDEX
All of the topics in the
following list are or have been available for downloading on the Amateur Radio
Packet Network.
The links below will take you to
another site from where the articles can be downloaded. Double click on a link
to download a file.
All files are in .pdf format
Title
Author Latest update
AERIALS
13cms 2 Lambda Slot G6KIU
Dec 04
13cms Yagi from Pringles Can KN9MWR
Mar 06
23cm Skeleton Alford Slot G8MNY Dec 03
23cms 65el loop Yagi details
G8MNY Sept 06
23cms 10ele Yagi for ATV G3ZJO Feb 06
23cms 6el Yagi DG2GAJ
Mar 05
23cms Flat Plate Aerial G8MNY Jan 03
2m & 6m Band "Neptune" Aerial G8AMG
2m 4el Quad you can build KI6DS
2m Fullwave Dipole G8MNY Dec 03
2m Slim Jim G0OEK
3 band VHF indoor aerial G0FTD
May 06
4m 5/8 Vertical G6OHM Nov 04
4m J Pole G6OHM Nov 04
6m 6el Yagis SP7QHP
6m 8el Yagi IK0ZIZ
6m Yagi from TV Antenna DG0OPK
70cm 19el Tonna Yagi info G0FTD
70cm 8el Yagi 2E1ESY
70cms & 2m Dual Band Aerial VK4XT
70cms 22el Yagi KE4IQQ
70cms Bowtie Beam G6OHM
70cms Collinear 2E1ESY
Nov 05
70cms Bazooka Dipole PD2HFE May 04
1 Watt UK MW
Station Aerial system
Sep 05
A Nest of Dipoles for HF G8MNY
Jun 05
Balloon & Kite Aerials G8MNY
May 06
Bent Dipole with GAIN! SP5RH
Delta Loops G4WYW
Simple /P HF Dipoles G8MNY
Aug 05
Tree antenna sky hooks G8MNY May 06
Understanding Trapped Antennas G8MNY Feb 06
AERIAL BITS
ATUs
HF ATU & SWR Bridge VC3000LP G8MNY
Mar 06
VHF ATU Homebrew Design G8MNY
Aug 05
BALUNS
1:6 HF balun(200,300,450,600 Ohm)
PD2HFE Dec 04
50-72 Ohm Balun for HF freq's
G8MNY Mar 05
50-200 Ohm HF Balun G8MNY Mar 05
Choke Balun for HF G8MNY Dec 04
Coiled Coax Choke Balun for VHF G8MNY
Dec 04
Pawsley Stub Coax Balun G8MNY Dec
04
Coax Sleeve Balun G8MNY Dec 04
FILTERS
23cms Filter G8MNY Dec 03
2M Cavity Filter VK2DKW
6m Filter Design? G8MNY Apr 04
60m Lowpass filter G3YRH Aug 04
VHF/UHF TVI Filter G8MNY Jan 05
ROTATORS
Rotator Alinco Diagram G8MNY
Nov 05
Rotator Kenpro KR400 info G8MNY Nov 05
Rotator Radio Shack info G8MNY Nov 05
Rotator Western WE115 info G8MNY Nov 05
Rotator Yaesu G250 info G8MNY Jan 06
Rotator Yamato YB101 info
G8MNY Nov 05
OTHERS
144/432MHz Homebrew Duplexers G8MNY Jun 04
4x Power Splitter for 2M or 70cm G8MNY Jan 05
Coupler 2 TX into one aerial G8MNY
Doppler DF Aerial Design G8MNY Jan 04
Making a Phasing Harness G8MNY Jan 05
Stacking, Baying or Boxing Ant G8MNY Jan 05
ATV/TV
625 Line PAL Spec v Digital Mar 06
10 Pin VCR Camera Connections G8MNY
A TV masthead Preamp G8MNY Dec 04
Black and Burst Sync Buffer G8MNY Feb 05
IR Remote Control failures G8MNY Apr 06
Low Power Video Buffer G8MNY Feb 06
Radar Clipper for 23cms Feb 06
S-Video pin-out connections G8MNY
Sep 04
VCR Triplexer to TV G8MNY Mar 06
Why analogue SAT RX bad for ATV G8MNY Feb 05
BROADCAST
1W @ 531KHz MW Station system G8MNY
Sep 06
625 Line PAL Spec v Digital G8MNY Jun 06
A Quality Crystal Set G8MNY Sep 06
A TV masthead Preamp G8MNY Dec 04
AM Broadcast Radio Principles G8MNY Sep 06
Coded Othogonal Freq Div Mux G8MNY Oct 06
FM Stereo Radio Principles G8MNY Sep 06
HiFi Dynamic Noise Limiter G8MNY Dec 05
IR Remote control failures G8MNY May 06
Medium Wave Magnetic DF Loop G8MNY Sep 06
MW Radio 1st stage G8MNY Dec 03
VHF/UHF TVI Filter (As above) G8MNY Jan 05
CONNECTORS
25 Pin D-Type Parallel Port G8MNY May 04
Cables for Laplink, Fastlynx etc G8MNY
Diskette Drive Connector G8MNY
GAMEPORT/JOYSTIC Connections G8MNY
IBM Video Connections G8MNY
IBM XT/AT Keyboard connections G8MNY
ISA I/O card pin out M1BYT
Mouse Connections G8MNY
SCART Video Connections G8MNY Sep 04
Serial Interface Connections G8MNY Mar
05
CW
Passive CW headphone filter G8MNY Mar 04
CW K Pip Tone unit G8MNY Jan 05
FT290 CW KOX Circuit G8MNY Feb 06
TS700G CW KOX add on unit G8MNY Feb 06
MAINS CIRCUITS
Fluorescent Lamp Circuits G8MNY Apr 06
LED as a mains NEON G8MNY Dec 05
Mains Power protector G8MNY Dec 04
SCR Drill Speed Controller G8MNY
Feb 05
Soldering Iron Economiser/Boost G8MNY Dec 04
TRAIC Light Dimmer G8MNY
Feb 05
MICs
A Simple V.O.X. Circuit G8MNY
Jun 05
Another Mic Preamp 2E1ESY
Hands Free Mobile Mic G8MNY Jan 06
Mic DJ Preamp Jan 06
Mic Preamps F5PBG
Oct 05
Phantom Bal Mic Preamp+Gun Mic
G8MNY Oct 04
Toggle PTT PA3BNX Apr 06
Yaesu DTMF Mic YM-48 G8MNY Oct 06
MODIFICATIONS
FT290/690/790 DC power mod. G8MNY Feb
06
3 way supplies for radio etc. G8MNY May 05
PSK31 Isolation Interface Feb 06
BHI Noise Eliminating DSP LS Apr 06
PTT line for Drake L-4B PA G8MNY Aug 06
PAs
4CX250B PA regulated supplies G8MNY Dec 03
4CX250B PA Timing and
Control
DC/RF Sensing PA Switching G8MNY Dec 03
Non relay instant RF Switching G8MNY Apr 04
Transistor PA Biasing G8MNY Nov 03
PORTABLE & /M
12V Cow Fence for /P G8MNY Dec 03
12V Fluorescent Tube Inverters ZR6CPB & VK3EUB
12V RF immune AF Booster Amp G8MNY Dec 04
A light 17M /P Mast design G8MNY Aug
06
Fluorescent 12V Dimmers G8MNY Aug 06
Gyn polling up large masts Apr 06
LED Lights DC0OS Apr 05
Toggle PTT G8MNY Apr 06
Vehicle Gutter /P Mast Support G8MNY
Apr 05
Windup 8m Mast for /P G8MNY Nov 04
Windup Torch Info G8MNY Dec 05
PORTABLE
POWER
1A Float Charge Pb Acid Battery G8MNY Oct 05
2nd Car Battery for /M & /P
G8MNY Nov 04
7AH "F" NiCad Battery Pack G8MNY Dec 03
A battery Zapper by ON4CBL ON4CBL Apr 04
Auto SCR charger for Car Batts G8MNY Jan 05
Car Alternators G8MNY Apr 05
Cheaper Generators (EU Only) G8MNY Mar 06
Honda Generator EX500 Info G8MNY Mar 06
Lead Acid Batteries G8MNY
Jun 05
Nisson Generator GL600 Info G8MNY Mar 06
Old Car Dynamos G8MNY Mar 06
Petrol Generators for /P SSB G8MNY
Nov 06
Recovering OLD NICAD/NMHI Cells G8MNY Feb 04
Regulating 12V Generator Output G8MNY Oct 05
SIP2300 Generator Info G8MNY Jun 06
Simple SCR Regulated Charger G8MNY
Mar 06
SIP2300 WOLF 2700 Generators
PSUs
12V System Surge protection G8MNY Nov 03
A Common High Current PSU G8MNY Apr 06
Adjusting 78xx/79xx Regulators G8MNY
Feb 05
Chopper Regulaters G8MNY Oct 05
High AMP Crowbar Protected PSU G8MNY Jun 04
Lab PSU ZR6CPB
Reforming Caps
G8MNY Jun 06
Splitting a floating PSU G8MNY Aug 06
Stopping HF TX/RX SMPSU QRM G8MNY Sep 05
Switch mode PS principles G8MNY Mar 06
TEACHING
80m VFO G8MNY Nov 04
AC Theory G8MNY Dec 04
AC 3 Phase Power G8MNY Dec 04
A Quality Crystal Set G8MNY Aug 04
Actual Antenna SWR LZ1LEN
An AF amplifier stage G8MNY Dec 04
Calibrating Frequency G8MNY Mar 06
Coded Othogonal Freq Dev Mux G8MNY Mar 06
Comms Noise Squelch IC G8MNY Jun 05
Darlington & Quasi Darlington G8MNY May
06
DC Current Sources for Co-Ax AF G8MNY May 06
dBW & dB Levels G8MNY Oct 04
Dual phase AF AMP explained G8MNY May
06
FM Deviation Calibration G8MNY
Dec 05
FM Stereo Radio Principles G8MNY Feb
06
Light Levels G8MNY Mar 04
LM380/TDA2003 IC Audio Amps VE2ACT/G8MNY
Mar 06
Making ASCII Diagrams G8MNY
Jan 06
Microwave Ovens G8MNY Apr 06
MW Radio 1st stage G8MNY Dec 03
Non relay instant RF Switching
G8MNY Oct 05
Odd Resistance Finder G8MNY Jan 06
Reducing
Electronic RF QRM G8MNY Mar 05
Reforming Capacitors G8MNY June 06
RF Modules List G8MNY
RF Signal Calculations G8MNY Oct 04
Simple 80m VFO G8MNY Nov 04
Sound Levels, dBA dBB & dBC G8MNY Jan
06
SSB Demo Circuit G8MNY Dec 04
Switch Mode PS Principles
G8MNY Apr 06
Transistors, SCRs & TRIACs G8MNY Oct 03
Transmission Line L & C VK2ZRG Oct 04
Understanding Multipath G8MNY Feb 06
Unijunction Transistor Circuit G8MNY
Nov 05
Unit Madness G8MNY Feb 06
Why More Extended ASCII Graphics G8MNY Feb 06
Wind Up Torch Info G8MNY Dec 05
Xerox Principles G8MNY Dec 04
Yet More IF Filters G3YRH Dec 02
TESTGEAR
A 2 Tone AF Test Osc Design G8MNY Jun 04
AKD's VHF/UHF Wavemeter WA1 G8MNY May 05
A Versatile Pulse Tester G8MNY
Feb 05
Coax Tester G3YRH Dec 02
Early AVO Valve Tester G8MNY Apt 06
Logic Probe G8MNY Nov 04
Mains Peak/RMS/Mean Meter G8MNY Dec 04
Measuring 1 of 3 Resisters G8MNY Mar 06
Meter Damping & Speed Up Circuits G8MNY Jan 06
Off air lock for ref osc. G8MNY Jun 04
Piston Absorption Wavemeter G8MNY Mar
06
Portable Appliance Testing G8MNY Aug 05
QRO Dummy Loads G8MNY Apr 05
QRP Power Meter & Dummy Load G8MNY Dec 03
QRP SWR Bridge G8MNY
Jan 06
Reaction Timer G8MNY Jan 06
RF Noise Bridge for HF G8MNY Dec 04
Scope & DMM Calibrator G8MNY
Feb 05
Spectrum Analyser Mods 1988/1989 G8MNY Jan 06
Voltage Indicator Screwdriver G8MNY Sep 04
Watson Hunter Counter Mods G8MNY Apr 06
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