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MODERN LIGHTNING PROTECTION FOR RADIO FACILITIES: RF ENTRY PORTS

MODERN LIGHTNING PROTECTION FOR RADIO FACILITIES: RF ENTRY PORTS

Lightning is one of Nature’s most destructive forces. It has the power of a good-sized explosive and cannot be avoided if you’re connected to antennas that are high and in the clear. And it’s not just lightning. On a recent evening, our 160 Meter dipole (260-foot wire span) strung between towers at 180′ here at…

CBWI October 1996 Editor’s Note

CBWI October 1996 Editor’s Note

Some of you may think the information presented in this publication is too technical and might be over your head. The intent, as our name implies, is to inform everyone. The material may go into more detail than some of you need but others may have a better technical understanding and have a use for…

How To Make The Best Solder Connections?

How To Make The Best Solder Connections?

Working on the mic wiring article, I realized that soldering is one of the most important elements in successful mic wiring. It can make the difference between a job that works or not and determines how long the connections last. Many of you are not set up with soldering equipment, so I’ve compiled a list…

Galaxy DX 2547 AM/SSB CB Base Station Radio Service Manual Excerpts

Galaxy DX 2547 AM/SSB CB Base Station Radio Service Manual Excerpts

Inside The Galaxy DX 2547 AM/SSB CB Base Station Radio The first thing I noticed after removing the top and bottom covers was the mobile chassis mounted in the base chassis. At first I was disappointed thinking this was a cheaply made base radio. What they have done was use the aluminum chassis of their…

Adding The Workman MD-4 To Other Radios

Adding The Workman MD-4 To Other Radios

Adding the MD-4 to radios with internal analog meters is more difficult than the Magnum 257 and 357DX. Although the following amplifier circuit works with the Magnum 257/357dx radios, its not necessary unless you desire the bar graph meter to also work. Adding the MD-4 external meter to the radios internal meter signal adds a…

CBWI January 2002 Adding The Workman MD-4 To Magnum 357DX

CBWI January 2002 Adding The Workman MD-4 To Magnum 357DX

Adding the MD-4 to the Magnum 357DX is simple if you don’t want the LCD meter to read any signal. The MD-4 external meter measures current and draws the voltage down to the LCD meter, thus the LCD won’t read once the MD-4 meter is connected to the same signal feeding the internal meter. Remember,…

General Lee Adjustment Potentiometers

General Lee Adjustment Potentiometers

VR1      “S” Meter Adjustment VR4       Squelch Coarse Adjustment VR5       FM Deviation Adjustment VR8       RF Meter Adjustment VR12     AM Low Power Modulation Limiter VR13    High Power Adjustment VR14    AM High Power Modulation Limiter VR16    Low Power Adjustment General Lee Adjustment…

Frequency Conversion For Galaxy DX 2547 – Channel Mods

Frequency Conversion For Galaxy DX 2547 – Channel Mods

Before you start, make sure the radio isn’t connected to a power source! This is a 4 position rotary switch conversion Reference Picture Below 1. Remove the radio covers, all knobs, and front bezel. 2. Remove the headphone jack from the front panel and leave wired. 3. Heat shrink headphone jack and secure to inside…

Mobile Linear Amplifier Selection & Setup

Mobile Linear Amplifier Selection & Setup

Before selecting a linear amplifier several things must be weighed. First, they are illegal to use on CB radio. You should research the decision carefully before taking the plunge into this very costly facet of the hobby. This article includes some facts that I hope will help you make the right choice. Adding more power…

Magnum 357DX Conversions – CB World Informer

Magnum 357DX Conversions – CB World Informer

As mentioned in this month’s review of the Magnum 357DX, there are different conversions that can be performed on this radio. Two will be covered in this article. Remember to always disconnect electronic equipment from the power source before doing any modifications. The most common and simplest conversion is cutting the diode lead on the…

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