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…
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…
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…
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 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…
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,…
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…
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…
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…
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…