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 

Engineer's Notebook Pullout, part 2

Toolbox.exe 

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.

Continental Electronics E-Slide 

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

Two Momentary Switches to a Maintained Switch 

Turn two momentary closures into a single maintained contact.

Engineer's Notebook Pullout, part 1 

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 

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.

Commonly Used Conversions 

This handy collection of formulas and Java converters will help any radio engineer.

SWR Calculator 

A Java applet that calculates SWR based on the specified forward and reflected power levels.

SWR Calculator 

A Java applet that calculates SWR based on the specified forward and reflected power levels.

Determine AM Modulation with an Oscilloscope 

Use an oscilloscope to determine the modulation of an AM transmitter.

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