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Re: cobra 200 gtl dx clarifier clip
Egor, hi. I'm sure there is a mod probably only known by the repair centers. I have converted and tuned the 200, but in case you don't know, the radio is full of surface mount components. They look like specks of pepper to the naked eye, and so it takes a tech with years of soldering experience to do any modding without destroying what their working on. Those radios are not a friendly radio for experimenting. I looked thru my papers that Cobra tech support sent me for converting, tuning, and other misc. mods but that info was not included. It is a nice radio when set up properly, so don't mess it up by experimenting.(just my opinion) Hope this helps,,and good luck, Mechanic
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An external freq counter will always do a better test then the one on the unit . Do you have an oscilloscope? A function generator will also have a freq counter . Now the ultimate is a spectrum analyzer. you don't need all these but the function generator will work fine.
under warranty that would be cover no charge.! send it in.. The clarifier on a factory radio will only adjust the RX.. not the TX.. unless there's a "course and fine." the course would do both. the fine would be rx only
in short the answer is no. The frequency range of the receiver is BC147XLT 29-54 136-174 406-512 FM in MHZ The mod you are talking about would require wiring and interfacing new receiver circuitry to place the unit in the 800-900 mhz range. Most cell phones now are encrypted within a data type stream so they cannot be heard. Also it is not legal to monitor Cellular frequency's. I hope that helps.
Have you herd it off freq? Do you have a freq counter? How do you know that the person that told you it sounds off freq don't have their receive off freq?
if its on a freq counter, and shows not off freq, then the radio is not off freq. There is some other problem.. Or no problem because if it is just some one else saying it, maybe they are just too picky.
Things that could cause your audio to change. If its in your mobile, diving around will make your audio sound different to people. Antenna or feed line problems. If there is a problem with your antenna or feed line, it could make your audio sound bad or off to some one else.
Also, if this unit has been modded, has the clarifier been unlocked? if so that will change your TX freq.
If the unit is new and nothing has been done to it, there should be no reason why it is off freq unless some one has done something to it.
Ok! well i deffinitally know what the problem is. You need to play with the clarifier, i think all the way to the left is a "course and fine tune" knob. This is generally for use when talking on SSB. but may affect AM if its way off.
The clarifier lets you slide on the freq. some radios will go a full channel some will only go a little or above the center of the channel. You need to play with the clarifier, you probably need to turn the course a lot, untill the audio is almost clear on the channel you want to talk on, than use the fine to tune it in so it sounds like they are sitting right next to you.
what you should do is buy a Frequency counter, you got a nice radio, so the freq. counter wouldent hurt. lets say you want to be on channel 19. you would turn the clarifiers untill i read 27.1850 That would put you right on the money
try going to a urban area and scanning the NOAA band. if that works your programming is wrong and there is nothing wrong with your AM/FM base band. also the BNC antenna connector on the inside is notorious for breaking away from the board, nothing a little solder cant handle. Also make sure your local freq's are not Digital
the 92xlt (and 72xlt) are models that only have the range installed and no other freqs are available (by mod or software)
there are many other models out there that do a wider range of freqs
often older models have less restrictions