2024

February

• Protector for SKF ball-bearings on antenna masts

January

• VNA Prototyping Board

2021

June

• What's the best ferrite material for a common-mode choke?

May

• Troubleshooting Icom RS-BA1 network issues

2020

January

• Outstanding VHF Tropo propagation
• ST-Link & Blue Pill Development board
• ICOM IC7300 and IC9700 variable TX Delay verified

2019

December

• Real-life CI/CD pipelines with Github Actions
• Cross-Compiling Golang (CGO) Projects

July

• Diamond MX-2000N HF/VHF/UHF triplexor teardown
• Replacing Yaesu FT857 IF filters

2017

January

• My new 40" 4K Desktop monitor (TV)
• Beverage antenna & radials cart

2015

January

• Network accessible Rotators
• DG8SAQ VNWA & Virtual Machines

2014

January

• DXHeat.com is online

2013

May

• Will additional coax stubs improve Bandpass Filter performance?

March

• How to rapidly deploy & remove antenna radials
• Can I still use oxidized coax cable?
• 4O3A Triplexor
• Double Half Delta Loop (DHDL) Low Band Receiving Antenna

February

• Microcontroller based Stackmatch Controller
• New Stackmatches for ED1R

2012

September

• Evolution of the DG8SAQ VNWA
• A simple broadband 4:1 Balun Transformer

July

• How to measure Ground Conductivity

June

• Community Improvement on Tuning wheels
• My A73A presentation at the Contest Forum

May

• Coax Stubs for 20m and 40m
• Quick & Easy: VPN through SSH Tunnel
• How to set up an Ubuntu Server on Amazon EC2

March

• Testing-Device for GU74b / 4CX800 tubes
• Customs broke my tubes (4CX800 / GU74b)

February

• Flex Control – Interviewing the Developer

January

• W7IUV Beverage Pre-Amp (2N5109)
• 2el Vertical Array for 160m
• HC2/AL1O qrv from Ecuador

2011

December

• How to exchange the GU74b / 4CX800 tubes on your Alpha91b (Alpha99) Amplifier
• Building a beverage switching box

November

• A73A in CQWW SSB 2011

May

• How PowerSDR-UI users set up their DJ Consoles

April

• FiFi SDR – The Interview

March

• PowerSDR-UI – knobs for your SDR radio

January

• VP8ORK Dinner in Buenos Aires

2010

December

• Disc Jockeys influence on SDR

June

• Presentation: How new technologies affect the art of contesting
• SDR appliance: JN1SDD’s NCDXF / IARU Beacon Monitor

May

• CW Skimmer, Win-Test & FT1000MP: my wish!

March

• PMSDR – an interview with IW3AUT

February

• Do you truly understand the SDR concept?

2009

December

• FA-SDR-TRX part #3 – the Transmitter
• FA-SDR-TRX part #2 – The Receiver
• FA-SDR-TRX part #1 – Systems View

2008

November

• Debugging the RS232 serial port

September

• Measuring ICE Bandpass Filter

August

• Assembly & Measurement of a 3dB Splitter

July

• Bandscope Modification Yaesu FT1000MP