Amateur Radio Links

Friends and Colleagues

Organizations

Manufacturers and Related Sites

ICOM America Home Page
Icom Elmer
YAESU Home Page
Doug,VA3CR's authoritative FT-1000MP Site
Bill N4ATS' Yaesu FL-7000 Site
The Fox-Tango Group
KENWOOD Home Page
Sunair Electronics LLC - military and commercial radio communications
Rohde & Schwarz - Germany's radio communications, test and measurement leader
Hilberling - a top German radio manufacturer. See their new PT-8000A transceiver!
ADAT ADT-200 - the Swiss direct-sampling HF/6m transceiver. View a presentation.
Interesting accessories for your station: LDG Electronics Inc.
PAR Electronics Inc. - antennas and RF filters
Pacific TV - a good source for vacuum tubes, in Victoria BC

Technical Topics

Here is an excellent tutorial on Modulation Theory
"Voltage" and "power" dB's getting to you? Read George, W5YR's "Treatise on the Decibel"
Read an excellent white paper and Web page on Software Defined Radio (SDR)
Of general interest to Hams and SWL's: RadioIntel.com
A marvellous electronics information resource: One Electron
Richard Measures' Amplifier Site
Don, AA5AU's RTTY Page
G3SEK's Amateur Radio Technical Notebook
G8WPW's Microphone Connections Page
Markus Hansen VE7CA's HP8640B Signal Generator Page
The RigPix Database
Sci.Electronics Repair FAQ Pages - very useful electronics repair info
Looking at HF amplifiers? Read about solid-state & tube designs. Why I favour solid-state!
HF Linear Amplifiers - basic concepts, types & operation
Speech compression in SSB radio systems
The future of SSB in a digital voice environment
The Beverage Antenna Memorandum
Antenna and receiver noise figure
VK1OD's Technical Site - many fine articles, including useful calculators
Antenna tuners and couplers
FM, Land-Mobile Radio and the Amateur Radio Service – a brief history
Amateur Radio Application of Frequency Modulation by VK1OD
DSP in HF Radios
Icom IC-756Pro3 vs. IC-756Pro2
Analog-to-Digital Converter Considerations, by Andrew Roos ZS6AA
MFSK 16 - a new HF datacom mode
Rig Power Supplies, by John White VA7JW - an excellent overview of power-supply technology
Some common-sense rules for ensuring long PA life
The H-Mode Mixer Page by PA3AKE

Test Procedures

Igor, UN7GM's ARRL Transceiver Specs Summary
Absolute RF Power Measurement using simple techniques
Not getting full SSB output? Run this simple PEP test procedure
Here is a useful dBm-volts-watts conversion chart (for 50Ω systems)
Use the RF Calculator (requires MS Excel) from Bird Electronics Inc.
Here's a handy tip from Bob W9YA: Use your oscilloscope as a preamp for a counter
Join the Radio Test Gear Group
Manuals Plus - a source for test equipment manuals
Docmesure - a French download site for test equipment manuals
The Autotuner as Preselector (swept-frequency test)

Receiver Topics

Design & Homebrew Projects

Build Paul, N2PK's Vector Network Analyzer (VNA) & HF Power/Return Loss Meter mirror site
Fighting ground loops, hum, RF/audio feedback, etc.? Read Sound System Interconnection
Designers: Visit Circuit Sage, a Web-based circuit-design toolkit
Experimenters: Test-drive the W9CF Antenna Tuner Simulator
A passive-attenuator calculator (H and T pads)
Markus Hansen VE7CA's HBR-200 HF Transceiver
EI9GQ Homebrew Page
Auxiliary keying interfaces for Icom HF radios
North American QRP CW Club

Historic & Military Radio