Telephone (from the greek word "tele" far and "phone" voice) is used to conveniently communicate especially in long distances.
Telephone keep us connected to people in different geographical region. With the rise of modern phone system such as the IP PBX, it makes our way of communicating more sophisticated and very efficient.
For CB's that are both modern and "legal" a frequency counter does not help much at all. However if you have an older radio with continuous tuning (dial with a needle) or are tuning "out of band" (using an illegal modified CB) you may find a frequency counter very useful. No,All the frequency counter does is match the frequency to the radio, to tell you how accurate the radio is, if it is a quality radio it is a waste of time for a more efficent CB radio you would want a RF meter to match the antenna to the radio, this would give you max signal when you key the mike, most of the radios that I have ever used have a signal strength right on the radio. All radios are designed to reject all frequencies except the one it's tuned to. Transmitter accuracy and receiver accuracy are both important for clear reception. CB radio uses 26-27 Mhz with a channel spacing of only 10Khz. If your transmitter's frequency is 5Khz too high and the person you're trying to talk to has a receiver that is a few Khz too low, you may not be able to talk to them at all or the sound will be distorted. All radios can be aligned. Better quality radios will not necessarily hold that alignment better. Antenna matching will affect how strong the signal is but not the frequency accuracy of that signal.
A frequency counter will tell you what frequency you are on. It does not help the average CB radio. But it does do a lot for modified cb's with extra channels. A Frequency counter also comes in handy if you are talking on side band, it helps you remember where to set the dial, and makes tuning someones signal in much easier. A Frequency counter will help if you need it. If you dont need it it is a waste of money.
TTL stands for Transistor-Transistor-Logic. N-MOS is a type of a metal oxide semiconductor technology. TTL is faster, but generally uses more power. MOS based devices are slower, they and they use less power. Speed is an issue when dealing with high speed data processing.
I'm in the process of repairing my red convergence failure on my JVC AV48WP30. The red convergence failure shows as a red "sag" or bow in the upper left corner of my screen, but could be blue or green in other parts of your screen depending on which convergence IC malfunctioned.
I'm not an expert, but from what I can tell if you have the sag of any color, one of two convergence IC's failed on the convergence board located in the front right cabinet portion of your TV (don't open the back of the TV).
The failure could have been caused by a faulty resister nearby. Look for smoked or burnt resisters near the 804 or 805 convergence IC's. The IC's themselves might be clearly labeled STK392-110, but you could upgrade to 150's or 180's for better heat tolerance. You may have to replace one or more resistors as well. Unplug the TV, open the front cabinet, desolder the existing IC's and replace. You could just swap IC's, resolder and power the TV on. If you notice a sag of a different color, now you've determined it was definitely a convergence IC failure. The IC's themselves ran me about $15 each from a TV repair shop. Call first to make sure they have them in stock.
I had the same problem. You need to go under your dash and look to the left (drivers side) and on the back side of the fuse panel you will see two fuses. One is a 10amp, the other is a 20amp, that is your fuse!!