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OK1RR DX & Contesting Page
Ham Radio web site dedicated to CW DX operating and contesting
A differential RF current sensor
An open letter to Aliexpress
Coaxial Cables
Conversion TR Log N6TR files to the ADIF format
Slovak (OM) prefixes and county codes
TRMASTER Database
Welcome to FT-SHMATE!
Yet another transformer for Flags and Pennants
Audio transformers 600:600 ohms on eBay
Everything Works
How to run 4nec2 under Linux?
Orion to Yaesu BCD encoder band swicthing
Russian vacuum relays
Stop using FT-8
WAS, DXCC 60m program
A Beginner’s Guide to Modeling with NEC
Amendment to ARRL DXCC Rules Will Expand DXCC List
Color coded resistors
Russian prefixes and zones
The N6RK Receiving Loop
The TinyKeyer
Transmitting tubes
Arduino Nano Rev. 3 with FT232RL not readable from the computer – fix
Audio transformers 600:600 ohms
dBm calculator
Operations not accepted for DXCC
QSL managers database utility
Russian transistors
The G3FNZ Loop
AWG (American Wire Gauge) to Metric Conversion
Edmund A. Laport’s textbook Radio Antenna Engineering
Flags and Pennants – Introduction by K6SE
Z-Time
A Debouncer for Semiautomatic Speed Keys in WX7G style
ERRARE HUMANUM EST
Short towers near tall trees
CAVEAT EMPTOR: Chinese soldering flux ZJ-18
Coaxial Cable attenuation
Notes on ground systems
Russian prefix system
How to sort unknown ferrite cores
Many thanks, IARU/ARRL!
My Bad Experience with Commercial Antennas
What is behind the Hi-Tech look of the ZACH Iambic Magnetic paddle?
2016 is here…
A Soundcard Digimode Interface
Double Half-Delta Loop RX Antenna
Meet the Modified GIESKIENG Antenna
Notes on call/QRP
GK callsigns – Cornwall, UK
Powerpole General Assembly Instructions
The Mini-K9AY
An Efficient MW Band-Stop Filter
The K9AY terminated loop
A Control Box for the K9AY Loop Antenna
A Fast and Reliable QSK T/R Relay Control Unit
A K6STI low-noise receiving antenna for 80 and 160 meters
Drop-Proof Antenna Analyzer
Farewell Collins Mechanical Filters
A Receiving Antenna That Rejects Local Noise
Yet Another Front End Saver
Is this Ewe for You?
The S56A SO2R units
More EWEs for You
The BCC Joker Switch
TR4W is now Open Source
Hipersil, the myth and the truth
The Classic Beverage Antenna, Revisited
Fake FTDI chips
The Battle Creek Special Antenna
Flags, pennants and other ground-independent low-band receiving antennas
I am available for skeds on 60 metres
Soil Dielectric Properties
The Ufer Ground
The W3EDP antenna
TNX, TKS, THX or THNX?
A Transformer for Ground-Independent Receiving Antennas
Facebook Says OK to Ham Calls As Alternate Name
The Minooka special
The W2PM Mini Diamond Receiving Flag
EUCW Snakes and Ladders
The VE3DO receiving loop
G5RV Multi-Band Antenna Reloaded
The G3XGC Receiving Loop revisited
The Most Complete List of TO & TX Stations
T10VB Transnistria – no DXCC Credit
The FOC QSO Party will be held on 25 March 2017
Warning Key Entities Not To Use Windows 8
FOC – FOCUS75 Magazine
QSL Bureau – a big shame?
QSL Managers Database
Winkey USB works in Linux
Niue changes prefix from ZK2 to E6
Heathkit closing again
The Islamic Republic of Azawad – a new DXCC entity?
1A0C – Sovereign Military Order of Malta
CW Academy
Do you know what means ei-wan ku-ra-bu?
New DX cluster node
A PDF copy of the N6RK’s article in NCJ, Sept./Oct. 2009. Download
here
.