Troubleshooting, noise and interference
Homebrew gear does not always work first time. Even if it appears everything is constructed as per the circuit.
Losing most of your signal - tests with lossy coaxial cable
Don't trust all SMA - SO239 connectors
Not all BNC connectors are equal
How much power is your QRP antenna coupler losing?
Fixing a QRP antenna coupler
Debugging an LM386 audio amplifier circuit
Troubleshooting a Pixie QRP transceiver kit
How to tame parasitic oscillations in variable crystal oscillators
Removing DDS generated noise from a QRP transceiver
Importance of inspecting and maintaining antennas (especially if used in salty air)
Hearing broadcast stations in the amateur bands? This could be why
The best thing you can do for your ham station
Tracking down an interesting RF noise source outside
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