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Homepage Last updated: 2017, January 16
Total pages: 2155

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files10 pages
An%20analysis%20of%20current%20flow%20at%20the%20end%20of%20shielded%20twin%20line%20at%20radio%20frequencies.pdf
MllFromZin.pdf
Counterpoise.pdf
SilverAlkalineCells.pdf
CoaxTrap01.pdf
         
aprx21 pages
Index of /files/aprx
Index of /files/aprx
Index of /files/aprx
Index of /files/aprx
Index of /files/aprx
builds.txt
tncx-rst.expect
tncx-init.expect
tnc2-rst.expect
tnc2-init.expect
tf-rst.expect
tf-init.expect
log.expect
links
kiss-rst.expect
kiss-init.expect
Index of /files/aprx
Index of /files/aprx
Index of /files/aprx
Index of /files/aprx
aprx_2.09.652_armhf.changes
    
measurement
         
enb3 pages
Measure IF Bandwidth
IC7400.txt
Ic7400Filter.xls
         
noise4 pages
Expected ambient noise level
FSAmbientNoise.pdf
FSAmbientNoise01.pdf
FSAmbientNoise02.pdf
    
antenna1 page
VK1OD Theme page: Antenna
         
m402 pages
Estimating Antenna Factor for a MobileOne M40 helical whip
Adjusting a short helically loaded HF vertical
         
PA0RDT-MiniWhip2 pages
How DOES the PA0RDT Mini-Whip work
How DOES the PA0RDT Mini-Whip work
         
80mVertical1 page
Exploration of a design for an 80m vertical antenna - Part I
         
BowralG5RV2 pages
Bowral G5RV for local contacts
G5RV according to G5RV
         
iobr1 page
The importance (or not) of being resonant
    
module
         
atpa1 page
AVR ATTiny programming adapter
         
hcctl1 page
Generic heating / cooling controller
         
icm2 pages
Measuring common mode current
Icm40.pdf
         
PllLdr3 pages
MCU to load PLL configuration registers
PllLdr - EEPROM data structure
Synthesisers and external reference clocks
              
cs011 page
PllLdr application - AD9850
              
cs021 page
PllLdr application - AD9850/51 300Bd FSK
              
cs031 page
PllLdr application - BH1415F
              
Picaxe1 page
Picaxe PLL loaders
              
files2 pages
PllLdr.hex
PllLdr-tx5.hex
              
cs041 page
PllLdr application - Si4133G (VK3XDK Agile PLL)
              
cs051 page
PllLdr application - Si4133GT (VK3XDK Agile PLL V2)
         
parot1 page
Power Amplifier Run On Timer (PAROT)
              
files3 pages
parot.hex
10s.parot
180s.parot
         
pik3 pages
PIK - PIC Iambic Keyer
PIK timing
pik011.pdf
              
VK3XU1 page
VK3XU's PIK with integral iambic paddles
         
rb4 pages
Roger Beep
Roger Beep - tone waveform development
Roger Beep - older firmware versions
Roger Beep - kit contents and construction notes
              
IC70002 pages
Roger Beep - IC7000 + HM-151 installation notes
Roger Beep - IC7000 + Traveller headset installation notes
              
IC9101 page
Roger Beep - IC910 installation notes
              
MC801 page
Roger Beep - MC80 installation notes
              
SM81 page
Roger Beep - SM8 installation notes
              
TS20001 page
Roger Beep - TS2000 installation notes
         
TuneMate3 pages
TuneMate for Icom transceivers
icah4e002.pdf
icah4e001.pdf
         
smbk8 pages
Simple Morse beacon keyer
Another simple Morse beacon keyer - basic, but accurate
Simple Morse beacon keyer - EEPROM data structure
Simple Morse beacon keyer - onair
Simple Morse beacon keyer - using ATB
Another Morse beacon keyer - A/B RF switching
Improving weak signal identification of FSK beacons
Morse beacon keyer for a cluster of transmitters
              
files4 pages
QrssBeacon-m168.hex
QrssBeacon-tx4.hex
QrssBeacon-tx5.hex
QrssBeacon-tx5x.hex
         
FlashTnc2 pages
Flash TNC
flashtncartwork.pdf
         
ic93501 page
Icom - 9350 Protocol Converter
         
QrssTx3 pages
QRP QRSS Beacon Transmitter - on air
QRP QRSS Beacon Transmitter
QRSS observation utilities
         
dc2 pages
12V DC distribution in car for radio applications - 2005
Anderson Power Poles for 12VDC radio applications
    
map8 pages
20160630
20160204
20151028
20151029
VK4MQ+VK2OL-2015
20160111
AprsDup2
20160305
    
pub2 pages
TuneMateForIcomTransceivers.pdf
RogerBeep.pdf
    
transmissionline6 pages
VK1OD Theme page: Transmission lines
A comment on W5DXP’s paper “An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line”
ARRL transmission line loss graphs
Twelfth wave TL transformers
The effect of a short discontinuity in transmission line characteristic impedance
Loss components in practical transmission lines at HF
         
VSWR17 pages
VSWR Myths
Additional loss due to VSWR
Power in a mismatched transmission line
VSWR and displacement
VSWR measurement
VSWR FAQ
MisMatch Loss given VSWR
Comment on W6VAT article on VSWR
Is Zs of a HF ham tx typically 50+j0?
A simple VSWR analysis without mirrors
Misunderstanding VSWR misleads
Return Loss
A worked example of a Bird 43 with a grossly mismatched load
A test of Zs on an IC7000
Does SWR damage HF ham transmitters?
Accuracy of VSWR meters at high sensitivity
Getting more out of your directional wattmeter
         
concept4 pages
Modelling practical transmission lines
Does twisting a two wire open line reduce radiation
Estimating parameters of two wire transmission lines
Insertion Loss vs Transmission Loss
              
RelayComp1 page
High frequency compensation of T/R relay
              
MLLvHRL1 page
Estimating Matched Line Loss from Return Loss
              
mvf1 page
Measuring the velocity factor of coaxial transmission line
         
LOLL4 pages
A review of QST article "The Lure of Ladder Line"
Optimum length of ladder line
CCS ladder line suitability at lower HF
nec.txt
         
TE1 page
Telegrapher's Equation
         
fig82 pages
Figure-8 flex used as RF transmission line
PVC insulated feed line on HF
         
getl1 page
A graphical explanation of energy flow in a practical transmission line
         
aev1 page
Avoiding flashover in baluns and ATUs
         
ZL1AN1 page
ZL1AN's transmission line challenge
         
OWLVSWR1 page
The merit of measuring VSWR on an open wire line
         
pcf1 page
Thinking aloud on pipe cap filters
         
folla1 page
The failure of lossless line analysis in the real world
         
RG61 page
RG-6/U for transmitting applications
         
stcm1 page
An analysis of current flow at the end of shielded twin line at radio frequencies
         
QWVmatch1 page
Matching a quarter wave vertical using TL elements
         
3001 page
300 ohm transmitting ladder line
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