Question about Sony Ericsson P990i Cellular Phone

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NO FM RADIO...

My P990i fm radio does't detect any channel....although I can hear the radio noise.....

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Try changing the headset bec that it also your antenna.

Posted on Jun 12, 2008

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Toyota-56037 radio (FM/AM) malfunctions..like... the system receives FM signals 76Mhz to 90 Mhz only although there are a lots of channels after 90Mhz. How to reprogram it? Plz help. TAUFIQ


if there is a mode button , press that and there is fm 1 whch is what you have , press again and you get fm 2 press again and you get fm 3
each fm number is a band width so select the band width that has most pf your stations and then auto select on it
if you have the owners hand book , the procedures are in ti for setting the radio

Nov 17, 2015 | Audio Players & Recorders

1 Answer

On AM radio, there is often a sound, like a hammer hitting a 55 gal. drum interrupting the program. Does not do it on portable radio carried in the car.


all stations AM?

is the engine running?

for get the portable, some have vastly better a/m radios than any car has. in fact many cars radios a/m OR of horrid quality.

i can tell you why but its boring. (AGC, read up on that)

did you try the radio in car, parked say across town.?

did you try all stations

are you like 1 block away from an AM radio station, overloading yours.

AM radios are basically noise making radios., that is why FM was invented to stop that noise, (i cant hear it so.........?????)

are you listening to far away stations, this is normal

in fact you might hear 2 stations on same channel (freq)

and they will beat against each other.

on case of is in S.Calif where your station is clobbered by high power mexican stations 50,000 watts. strong.

and worse a night, does it get better in the day?



here is my advice, many AM stations have a rebroadcast on FM.

go there and listen. (use SAT radio?)

AM radio is subject to vast sources of noise.

ignition noise., high voltage power transmission line noise.

machinery noises, (electric)

or even illegal transmitters in your hood.



many new cars the AM radio is junk, they use this very cheap

chip inside that does this very poorly, but allows them to say

it has AM. ( for $1 cost)

the FM side is 10x better, or more. move up to FM like we all did back in 1967. (i used to build and sell converters back then)





answering for , all other modes work perfect, but AM radio..

Oct 28, 2015 | 2015 Jeep Grand Cherokee

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This is something new to me, what do I set all the buttons and knobs to talk on channel 19,hi-lo band,10khz on or off ,pa-fm-am,e/a-f/b-g/c-h/d, e-tone thanks for any help anyone can give me.


Radio On Volume comfortable Listening level Squelch Open (Hearing Noise) Mic Gain Up unless told by receiving station to reduce it. 10 Khz Off pa-fm-am set to Am e-Tone to off I believe this model has CB on Band C which is switch down on Low and C position you will know when you hear truckers on 19 which band is CB

Aug 06, 2010 | Galaxy Radios DX-44V 40-Channels Base CB...

1 Answer

Cb transmit noise


Its just RF feed back, that's normal, try to re-route the coax, or just turn the FM down, o try turning your modulation down....hope this was helpful....

May 29, 2010 | Cobra 75 WX ST 40-Channels Handheld CB...

1 Answer

Conventional Frequencies stopped receiving when set to FM


Turn the squelch until you hear noise, then back off. Also, make sure you have a "+" and not a "-" by your group number as it will lock out channels that don't have a matching PL tone (CT). Make sure your group is set to FM and not MOT, or AM.

Dec 11, 2009 | Radio Shack Pro-97 Handheld Scanner

1 Answer

Please explain a 10 meter am/fm radio


Okay.

You do set this up like a regular CB. The meters refers to how long the waves are. CB is 11 meters. So its very close. The antenna woud be tuneds slightly shorter. Use the SWR meter in the radio to calibrate just like you would a normal cb.

Now for the ABCDEF knob. each letter is 40 channels in the band. So A would be 1 - 40 channels, then B would be the next 1 - 40 channel frequencies. You use the frequency counter in the radio(providing that model has one) to tell what channel you are on.

Here is some info one the frequencies in the band.

Now for AM and FM. this is the type of modulation you are using for transmit and receive.

CB transmits on AM or SSB. Amplitude modulation or Single side band. Most CB radios only have AM. But some also have SSB. None will have FM.

FM is frequency modulation.

10 meter radios can have AM FM SSB and DSB depending on the model and options it comes with.

So your radio has 6 ranges for freqency. each is 40 or 50 channesl. Not sure what model you have. If it has 40 then you have 240 channel freqencies.

with AM and FM, you double that, because you can talk on AM or FM on all the channels. If you are on AM and some one transmits on FM unless they are really close, you will not hear them at all, but if you do with will just be garbbled noise.

Also Am and FM both work a little different with range etc.

Now, you may be able to talk on the CB channels as well. Cb starts at 26.965 MHz and ends at 27.405 MHz. The channels are all .010 MHz appart.

Hope this helps

Dec 09, 2009 | Radio Communications

1 Answer

Only in certain areas and passing vehicals cause interferance


I'm assuming your using a RF unit (radio frequency). Whether this unit inserts in the antennea line or is simply broadcasting an FM signal via it's own antennea, it is still transmitting a low power FM signal. The idea here is to find an unused FM channel in your area, set your radio to that channel and program the Sony RF unit to use that channel. The signal the Sony RF unit is transmitting is low power due to FCC regulations and to minimize the possible interference you could cause to someone else's FM listening.

You are likely using an FM channel that is being overpowered by a real FM radio station. This is usually solveable if you only travel in your town by picking an empty FM channel. If you travel alot, the channel in your town that is empty may not be the case when you travel 50 miles away. That's just part of the problem inherent when using radio frequencies to get your music into your radio. You have to be willing to deal with it.

As far as passing vehicles, I'm going to assume that the vehicles that are interfering with your radio are doing the same thing you are doing, they are using FM radio frequencies to pump music into their radios and they are using an FM frequency close to or the same as the one you are using. Since having an unused channel on the FM band is pretty rare these days, if there is one, you can bet everyone is trying to use it for their own purposes since it is "quiet", until you come around!

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Uniden 520xl makes humming noise when mike is keyed


if you have a power mic , you might have it turned up to high. next make sure you have a good ground on your antenna. if that is ok and you still have the same problem have the swr checked. this should fix the fm radio noise.

Apr 10, 2009 | Uniden PRO510XL 40-Channels Base CB Radio

1 Answer

Radio not working


are u using the earpiece??

its like the antenna

Dec 19, 2008 | Sony Ericsson P990i Cellular Phone

2 Answers

STATIC/INTERFERENCE


&R=11812445&C=17577363&K=NBy0rr?h=2mv3s7&r=11812445 Your SIRIUS radio contains an FM transmitter that allows it to operate wirelessly through your car FM radio. We have determined that the output of this transmitter exceeds the limits established by the Federal Communications Commission (FCC). As a result, the unit may interfere with the performance of radios operating in areas adjacent to your radio. There are no health or safety concerns associated with this issue.
  • If you listen to your SIRIUS radio wirelessly through your vehicle's FM radio, then please review the solutions listed below and select the one that works best for you. SIRIUS will provide you the best solution at no cost.
  • If you use your SIRIUS radio only when docked in a boombox, or directly connected to your car radio or home stereo using audio cables or a cassette tape adapter, then no interference can occur and no further action is required, provided you have turned off your FM transmitter. To turn off the FM transmitter, first press the MENU button. Use the channel up/down buttons to highlight “FM Transmitter” and push the SELECT button. Use the channel up/down buttons to highlight the "FM On/Off" menu item and then press the SELECT button. Use the up/down buttons to highlight "FM Off" and press the SELECT button. To exit the "FM On/Off" menu, press the MENU button. Use the same procedure to turn off the FM transmitter if you use Solution 1 or Solution 2 below..
Solution 1 - Direct Wired Audio Connection: If your vehicle radio has a “LINE IN” or “AUX IN” jack, you can use a stereo cable to connect directly to your SIRIUS radio. This solution is the easiest to install and provides the best audio performance. Many newer vehicles provide the required audio input jack. It will normally be found on or near the front faceplate of your vehicle’s radio.

fcc_a_1.jpg



Solution 2 - Cassette Tape Adapter
: If your vehicle has a cassette tape player, you can use a cassette adapter that allows you to play your SIRIUS radio through the cassette portion of your vehicle radio. The adapter slips into your vehicle radio as easily as a cassette tape and provides better performance than a wireless connection. fcc_a_2.jpg


Solution 3 - FM Extender Cable Kit: An FM extender cable will provide a special transmitter antenna that allows you to obtain the best audio performance through your vehicle’s FM radio. This solution is easy to self-install, but does require that an easy-to-hide wire be run in your vehicle so the transmitter antenna can be placed in close proximity to your vehicle’s radio antenna. Using this FM Extender Cable Kit, you will continue to use your SIRIUS radio exactly the same way as you do currently. fcc_a_3.jpg



Solution 4 - FM Direct Adapter with Professional Installation: An FM Direct Adapter provides a wired connection between your SIRIUS radio and your vehicle’s radio. You will continue to listen to your SIRIUS radio through the FM tuner of your car radio, but the FM Direct Adapter eliminates the outside static and interference you sometimes experience when using a wireless FM connection. This solution usually requires professional installation. We will provide a certificate redeemable for installation at an installation center in your area.
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Please go to www.sirius.com/optimize and select the solution that works best for you. If you have any questions, please call 1-(877) 635-5130. Detailed instructions will be included with your solution.
You will improve the performance of your SIRIUS radio and reduce the potential for interfering with adjacent radios if you properly tune your FM transmitter. Please see the FM Transmitter Set-Up Tips below for more information.
We are sorry for this inconvenience. We are confident these solutions will allow you to continue to enjoy the great music, news, sports and entertainment that only SIRIUS Satellite Radio can offer with no impact on your radio’s performance.
Sincerely,

SIRIUS SATELLITE RADIO


FM Transmitter Set-Up Tips

To tune your FM transmitter turn off your SIRIUS radio and tune through the FM channels on your vehicle’s radio to locate an FM channel (except 87.7/87.9) that is not broadcasting in your area. If you use an FM channel that is being used by a local broadcaster, it will interfere with the performance of your SIRIUS radio. Once you have located an FM channel that is not being used for broadcasting in your area, save it as a preset on your vehicle radio. This will become your SIRIUS preset. If you’re not sure which FM channels are not being used in your home or travel cities, you can go to www.sirius.com/fmchannel and search for an FM channel based on zip code.
Turn on your SIRIUS radio. In the SETTINGS or MENU on your SIRIUS radio, locate the “FM Frequency” adjustments. Set the channel number on your SIRIUS radio to match the SIRIUS preset on your vehicle radio. Refer to your user guide for detailed instructions on how to do this. The FM transmitter in your SIRIUS radio is automatically set to FM channel 88.1. This may not be the best channel in your area.

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&R=11812445&C=17577363&K=NBy0rr?h=2mv3s7&r=11812445

Jul 08, 2008 | Sirius Starmate ST2 Satellite Radio...

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