It seems we all have a collection of notes and diagrams that we refer to for solving problems or for unique situations. Don't keep them to yourself, share them with the industry. Everyone can benefit from these little problem-solving devices and gadgets. Radio magazine wants to hear from you. Send your Engineer's Notebook ideas to firstname.lastname@example.org. Remember, your submission may count towards SBE recertification points.
Also, if you have a problem and you can't find a solution, let Radio magazine know. Our staff of technical consultants and authors have considerable experience in every technical aspect of radio.
Section index | Audio | RF | Electronics/General | FCC & FAA | Software |
Need to figure the necessary storage sapce for audio files? Use these equations to make it easy.
Learn to design T and H pads or use our handy calculator.
Build passive AES3 balanced-to-unbalanced and unbalanced-to-balanced converters.
Temporarily restore old tape for playback.
Build a lattice combiner/splitter.
Pinouts and schematics for these popular, high-quality audio transformers.
Find copper radials in an AM antenna system with a field-intensity meter. These tips show you how.
Online converters, tables and charts for radio broadcasting.
A Java applet that calculates SWR based on the specified forward and reflected power levels.
Use an oscilloscope to determine the modulation of an AM transmitter.
FM subcarrier services can be source of revenue for an FM station. They can also be a source of aggravation if not maintained properly.
Build a shielded-loop AM antenna.
A variation on the antenna's construction.
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.
A handy reference of IP subnets.
Turn two momentary closures into a single maintained contact.
Adding and substracting time isn't difficult if you know the secret. No special calculator is required.
A convenient color-code chart to determine a resistor's value.
Dual tone multi-frequency tones are used for telephony and many remote control applications. This page covers the basics of the DTMF standard and provides playable audio samples.
This handy collection of formulas and Java converters will help any radio engineer.
This pseudo-binary circuit allows a single remote-control telemetry channel to indicate several variations on circuit status.
Identify computer cards and other electronic components by their FCC ID number.
A simple interface and flash-failure circuit to interface to a station's remote control.
A collection of articles from Radio magazine's sister publication EC&M.
A simpler, cleaner method of preparing a braided shield for a connector.
Turn a momentary closure into a maintained contact.
FCC and FAA
When a tower is not properly lit because of a light outage, the tower owner is required to notify the FAA. Here's how you do it.
Click here to read more: www.fcc.gov/mb/audio/bickel/noonehome.html
The FCC has prepared a guide to help troubleshoot consumer interference problems.
E-Slide is an electronic sliderule program for the Radio broadcast engineer.
Endec Remote is a utility to remotely control a Sage Endec from a Windows PC via a serial or IP connection using a serial-to-Ethernet adaptor at the Sage unit.
A utility to help diagnose contact closure and configuration errors for a StarGuide broadcast satellite receiver. ZIP file.
A package of programs for radio broadcast engineers, including FM or STL path calculation, maximum AM DA MP calculation, FCC upper/lower common point/ND base current calculations, power change schedule for up to 14 months, calculate field/loop ratios for AM DA systems, fresnel zone clearance calculator, and more.