Engineer's Notebook
Two Momentary Switches to a Maintained Switch
Turn two momentary closures into a single maintained contact.
IP Subnets
A handy reference of IP subnets.
Linear Digital Audio Data Rates and Storage
Need to figure the necessary storage sapce for audio files? Use these equations to make it easy.
TCP/IP Port Numbers
In TCP/IP and UDP networks, a port is an endpoint to a logical connection and the way a client program specifies a specific server program on a computer in a network.
Time Calculations with a Calculator
Adding and substracting time isn't difficult if you know the secret. No special calculator is required.
Commonly Used Conversions
This handy collection of formulas and Java converters will help any radio engineer.
AM Radial Sniffer
Find copper radials in an AM antenna system with a field-intensity meter. These tips show you how.
Passive Audio Attenuators
Learn to design T and H pads or use our handy calculator.
Commonly Used Conversions
This handy collection of formulas and Java converters will help any radio engineer.
Determine AM Modulation with an Oscilloscope
Use an oscilloscope to determine the modulation of an AM transmitter.
Tower Light Alarm Circuit
This pseudo-binary circuit allows a single remote-control telemetry channel to indicate several variations on circuit status.
FCC ID Number Lookup
Identify computer cards and other electronic components by their FCC ID number.
Western Electric 111C and 119C Transformer Information
Pinouts and schematics for these popular, high-quality audio transformers.
Variation on the Shielded-Loop AM Antenna
A variation on the antenna's construction.
Electronic Symbols True Type Font
A True Type font set with electonic symbols.
Baking Magnetic Recording Tape
Temporarily restore old tape for playback.
Push-on/Push-off Switch
Turn a momentary closure into a maintained contact.
AES3 Passive Converters
Build passive AES3 balanced-to-unbalanced and unbalanced-to-balanced converters.
Lattice Combiner/Splitter
Build a lattice combiner/splitter.
Shielded-Loop AM Antenna
Build a shielded-loop AM antenna.
