Site Map

Homepage

Last updated: 2010, March 11
Total pages: 248

    
5 pages
VK1OD on the 'net
Reorganisation of VK1OD.net
VK1OD on the 'net
Feedback
disclaimer.htm
         
CQVK 4 pages
Australian amateur population trends 1998 - 2008
CQVK
index.htm
CQVKAcaSubmission20031030.pdf
         
FM 3 pages
Passive Direct Inject Box
Setup of FM tx for broadcast relay from a digital audio source
Amateur Radio application of Frequency Modulation
              
LinkedRepeaters 1 page
Linked repeaters - siqnal quality
              
afskoverload 1 page
AFSK - effect of overload of tx audio input
         
antenna 1 page
VK1OD Theme page: Antenna
              
14MDipole 1 page
14MHz Inverted Vee Dipole
              
4over4 1 page
Four over Four for 144MHz
              
7MDipole 1 page
An antenna for 7MHz local contacts
              
D130 1 page
Diamond D130 Discone
              
DoubleBazooka 1 page
Double Bazooka Antenna performance
              
G5RV 2 pages
Optimising a typical G5RV
Feeding a G5RV
              
GammaMatch 2 pages
Novel Gamma Match Construction
gamma.pdf
              
H4BTV 1 page
Hustler 4BTV Report
              
InvertedL 1 page
Inverted L for HF
              
NaroomaEFW 1 page
Narooma End Fed Wire
              
PY2RML 1 page
N4UJW / PY2RML Ham Universe short dipole
              
SmallUntunedSquareLoop 5 pages
Small untuned single turn square loop for field strength measurements
Small square un-tuned loop for field strength measurement - NEC models
Small untuned single turn square loop for field strength measurements
loop-nec2.pdf
Loop600.pdf
              
VB214 1 page
Refurbishing a Hy-gain 2meter 14 element beam (214, VB-214)
              
VK1ZKD-7MDipole 1 page
7 MHz Dipole at VK1ZKD
              
W5GI 1 page
De-mystifying the W5GI Mystery Antenna
              
atcc 2 pages
Antenna Tuner Calibration Chart
atcc.pdf
              
buddipole 1 page
Field strength measurement - Buddipole and FSM
              
ccps 1 page
An exploration of a cophased collinear array with coax phasing stubs
              
coaxtrap 3 pages
A trapped dipole for 80m and 40m using bootstrap coax traps
Bootstrap coax traps for antennas
D-0360.txt
              
cobra 2 pages
NEC model of the Cobra antenna
nec.txt
              
dl6wu 3 pages
Estimating Beamwidth of DL6WU long boom Yagis for the purpose of calculating an optimum stacking distance
NEC-2 Models of DL6WU Yagis
DL6WU Long boom Yagi design tools
              
iobr 1 page
The importance (or not) of being resonant
              
m40 1 page
Estimating Antenna Factor for a MobileOne M40 helical whip
              
multibandunloadedvertical 4 pages
An unloaded elevated vertical as a multi-band HF antenna
The Force12 Flagpole and FP-40C under the microscope
An unloaded vertical as a multi-band HF antenna
The VK5BUG Black Stick under the microscope
              
post 3 pages
Driving earth rods
Antenna mast for experimental use
Earthing system at VK1OD
              
shieldedloop 1 page
Small single turn un-tuned shielded loop
                   
200805 1 page
TS2000 audio setup - May 2008
                   
200806 1 page
TS2000 audio setup - June 2008
              
legend 1 page
Legendary microphones for ham radio
         
balun 1 page
VK1OD Theme page: Balun
              
G1-1-FT140-61 1 page
A model of a Guanella 1:1 VHF choke balun using a FT140-61 core
              
G1-1-LF1260 1 page
A model of a Guanella 1:1 choke balun using two Jaycar LF1260 cores
              
G1-1-LO1238 1 page
A model of a Guanella 1:1 choke balun using a Jaycar LO1238 core
              
Guanella 2 pages
A model of a practical Guanella 1:1 balun
Model validation - FT240-61-35t
              
Ruthroff 2 pages
A model of a practical Ruthroff 1:4 Unun
A model of a practical Ruthroff 1:4 balun
              
W2DU-LF1258 1 page
A model of the W2DU 1:1 choke balun using Jaycar LF1258 cores
              
W2DU-LF1260 1 page
A model of the W2DU 1:1 choke balun using Jaycar LF1260 cores
              
W2DU 1 page
A model of the W2DU 1:1 choke balun
              
gsc 1 page
A review of the Guanella 4:1 balun on a shared magnetic circuit
         
bpl 14 pages
Theme page: Broadband over Power Lines
Theme page: Broadband over Power Lines
Observations of ambient noise / emissions at Jerrabomberra - April 2007
ManagementOfInterferenceFromBpl-OwenDuffy.pdf
Are you ready for BPL enablement of your home and neighbourhood?
Hobart BPL Trial -  11-12 January 2007
Country Energy BPL Trial Oct - Febuary 2004
Woomera BPL Trial Oct - Dec 2004
Queanbeyan BPL Trial Mar 2005
Queanbeyan BPL Trial Nov 2004
An introduction to Broadband over Power Lines
Ionospheric propagation of BPL emissions
How much radiated power does it take to create an S9 signal?
Comparison of the proposed CENELEC standard and existing US FCC 15.209 on HF Amateur Bands
         
calc 9 pages
Characteristic impedance of transmission line of two square conductors in air
SG / Brix / Plato / Baume calculator
Noise measurement uncertainty calculator
Field strength / receive power converter
Receiver sensitivity / noise figure / noise factor / noise floor converter
Noise Figure Y factor method calculator
Calculator to support Manual Testing of Field-Strength Levels Using Conventional Receivers
Ambient noise calculator
Antenna Factor of short tuned vertical with concentrated loading
              
awcc 1 page
Antenna wire catenary calculator
              
bplc 2 pages
BPL interference evaluation tool usage notes
BPL interference evaluation tool
              
dbc 1 page
Distance and bearing calculator
              
qsrf 1 page
Quiet sun radio flux interpolations
              
tl 8 pages
RF Two Wire Transmission Line Loss Calculator
RF Transmission Line Loss Calculator / Enhanced
VSWR calculator
EMR MPE standards compliance evaluation tool
TWLLC help
TLLC help
VSWR calculator help
EMR MPE standards compliance evaluation tool usage notes
                   
ACA 1 page
guidelines.pdf
                   
images 1 page
vswr.pdf
              
6ppp 1 page
Serious hazard of common 6 pin DC power connector on ham transceivers
              
FDC 1 page
Feidaxin FD-460UH report
              
FT90R 1 page
Yaesu FT-90R Squelch Report
              
ic7000 1 page
IC-7000 evaluation
         
files 1 page
AmateurRadioLog.pdf
              
DftPower 1 page
The Discrete Fourier Transform from a power perspective
              
RfPowerTerms 1 page
RF power terms
              
SquareWave 1 page
Total Harmonic Distortion of a square wave
              
SsbTxPower 1 page
Measuring SSB transmitter power
              
enb 3 pages
Measure IF Bandwidth
IC706IIGSpectrumLog.txt
IC7400.txt
              
frequencycalibration 1 page
Easy frequency calibration check on modern transceivers
              
nfisa 1 page
Noise Figure inferences of spectrum analysis of weak signals
              
noise 9 pages
Radio noise measures
Theme page: Noise, LNA, Preamplifier, G/T, Receiver Performance
Accuracy of narrowband audio noise measurements with a digital multimeter
Headroom in white noise measurements
Uncertainty of the noise sampling process
Expected ambient noise level
FSAmbientNoise.pdf
FSAmbientNoise01.pdf
FSAmbientNoise02.pdf
              
twotone 1 page
Using audio spectrum analysis for end to end linearity testing of a SSB transmitter / receiver
              
AH4-AT300 1 page
AH4-AT300 Protocol Converter
              
CpldPll 1 page
An experimental CPLD based PLL
              
EA78Accukeyer 1 page
EA 1978 Accu-keyer improvements
              
Echolink 1 page
Echolink interface unit
              
FlashTnc 2 pages
Flash TNC
flashtncartwork.pdf
              
HAPN 1 page
Fitting a HAPN 4800 board to a Paccomm Tiny 2 Mk II
              
PepAmp 3 pages
Peak amplifier for an RF wattmeter
Peak amplifier for Drake W4 directional wattmeter
PeakAmpSchematic.pdf
              
PhoneFilter 1 page
index.htm
              
SCAmmeter 1 page
Silicon Chip Automotive Ammeter (June 2002) - mods
              
SoundCardPreamp 1 page
Sound card microphone preamplifier
              
SpkrHiPass 1 page
High Pass speaker filter for CTCSS suppression
              
TncAudioBob 1 page
TNC Audio Break-Out-Box
              
TuneMate 2 pages
TuneMate  for Icom transceivers
icah4e001.pdf
              
VkPowermate 1 page
VKPowermate II
              
crd 1 page
Coax Relay Driver
              
dc 2 pages
12V DC distribution in car for radio applications - 2005
Anderson Power Poles for 12VDC radio applications
              
g2c 1 page
GPIB to Centronics Protocol Converter
              
hdt 1 page
Heater Delay Timer
              
ic9350 1 page
Icom - 9350 Protocol Converter
              
mdmrst 1 page
Mdmrst
              
pik 3 pages
PIK - PIC Iambic Keyer
timing.htm
pik001.pdf
                   
VK3XU 1 page
index.htm
              
rb 4 pages
Roger Beep
Roger Beep - tone waveform development
Roger Beep - older firmware versions
Roger Beep - kit contents and construction notes
                   
IC7000 2 pages
Roger Beep - IC7000 + HM-151 installation notes
Roger Beep - IC7000 + Traveller headset installation notes
                   
IC910 1 page
Roger Beep - IC910 installation notes
                   
MC80 1 page
Roger Beep - MC80 installation notes
                   
SM8 1 page
Roger Beep - SM8 installation notes
                   
TS2000 1 page
Roger Beep - TS2000 installation notes
              
rpi 2 pages
Radio Programming Interface
rpipanel.pdf
              
traffic 2 pages
Erlang C FAQ
Telephony Traffic
         
piano 2 pages
A piano repair story
A piano repair story
              
20071125-VK1BL 1 page
QSO - VK1BL/P and VK2FZ on 13cm on 25/11/2007
              
MtGinini 1 page
Mt Ginini
              
solar 1 page
Spotless days around solar cycle transition
              
tropo 1 page
Estimating threshold receive power level for WSJT JT65B/KV
              
flexnet 5 pages
VK1CAE Experimental FlexDigi Node
flexnode.pdf
Resources for Flexnet trial
TFPCX
6PACK HUB
         
reference 1 page
Bootlace Terminals
         
rigging 4 pages
Silver rope
Wire Table
Sufficient sag for wire antenna spans for wind survival
Comparison of observation of actual span with calculated model
              
gt 1 page
Effective use of a Low Noise Amplifier on VHF/UHF
                   
144LNA 1 page
144MHz low noise amplifier performance in the real world
                   
144options 1 page
Exploration of options for 144MHz SSB station at VK1OD
              
noise 1 page
Noise and receivers
         
software 1 page
Theme page: Calculators, Software
              
finddr 2 pages
FINDDR
FINDVOL
              
fsc 4 pages
FSC support page
FSC Home Page
FSC Home Page
FSC FAQ
              
fsm 8 pages
FSM support page
FSM Home Page
Accuracy of the FSM sampling process on noise
FSM Home Page
FSM.pdf
FSM Receiver Tests
FSMKeyboardShortcuts.pdf
FSM FAQ
                   
cs 3 pages
FSM case study - Wideband interference on 40m
FSM case study - Ambient noise survey on 40m
20050628212255.txt
                        
03 1 page
Ambient noise survey, Hackett ACT on 40m, 06/03/2009
              
nfm 6 pages
NFM Support
NFM Home Page
NFM.pdf
NFM FAQ
NFM Registration
NFM Home Page
                   
applications 3 pages
Measuring system G/T ratio using Sun noise
Plotting antenna pattern from Sun noise
Plotting antenna pattern from Sun noise
         
traffic 7 pages
Telephony Traffic
Erlang B traffic model
Erlang C queue model
Poisson traffic model
Binomial traffic model
Traffic unit converter
Telephony Traffic
              
LOLL 2 pages
A review of QST article "The Lure of Ladder Line"
nec.txt
              
QWVmatch 1 page
Matching a quarter wave vertical using TL elements
              
RG6 1 page
RG-6/U for transmitting applications
              
TE 1 page
Telegrapher's Equation
              
VSWR 4 pages
VSWR and displacement
VSWR FAQ
VSWR measurement
VSWR Myths
              
stcm 1 page
An analysis of current flow at the end of shielded twin line at radio frequencies
         
tx 1 page
VK1OD Theme page: Transmitters
              
AL811H 2 pages
Optimum length of exciter - HPA interconnect cable
Ameritron AL811H tube selection
              
AmPwmFilter 1 page
Filtering a PWM amplitude modulator
              
RFPATPC 1 page
RF Power Amplifier Tube Performance Computer