Engineer's Notebook

Proof of Performance Manuals

In the 1970s, Broadcast Engineering published an FM and AM manual to conduct a station audio proof of performance. We have scanned them and posted them for your reference.

Equipment Manual Archive

We're building an archive of equipment manuals for equipment that is now out of production.

Engineer's Notebook Pullout, part 2

Continental Electronics E-Slide

E-Slide is an electronic sliderule program for the Radio broadcast engineer.

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.

Endec Remote

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.

Two Momentary Switches to a Maintained Switch

Turn two momentary closures into a single maintained contact.

Engineer's Notebook Pullout, part 1

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.

Reporting a Tower Light Outage to the 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.

Javascript Clock

Insert this Javascript code into your Web page to display the computer's time and date in a form that follows the mouse.

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

, By Chriss Scherer

Learn to design T and H pads or use our handy calculator.

RF Resources Online

Online converters, tables and charts for radio broadcasting.

Resistor Color Codes

A convenient color-code chart to determine a resistor's value.

DTMF Information and Examples

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.

DTMF Information and Examples

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.