Receive problem i can't put on the right frequency in the AM BAND.How can i shift into 9khz scanning method? for example: 531khz,540,549,558,etc....Thanks!

I have never used a scanner of that type but I have seen them in use and know the principle of operation.

If you are certain the radio is working and have checked with the instruction manual that you are operating it the correct way with any squelch control turned down and the volume turned up there should be a loud hissing from the speaker indicating the radio is ready to receive as soon as it is either tuned to the specific frequency of a station by direct entry or by scanning one or more bands of frequencies.

If there is no hissing noise it is possible the audio output is faulty or the aerial is not connected or the radio is otherwise faulty.

If the hissing noise is present and powerful and still nothing is being received it is possible there is nothing to receive or a more powerful aerial is needed.
It is worth noting many scanners available in the past tended to scan bands of frequencies in the upper and lower vhf bands where the aircraft, marine and emergency services radios operated. Since those days many of those services have moved their communications into the UHF bands leaving the vhf bands relatively empty.

If you are attempting to program it to tv-2 on a 625 receiver it has to be set to a odd number for example number 7 instead of 2 or 6.
The reason for this is that the 625 receiver only supports band A frequencies for UHF and on a 21.x remote odd numbers are A band and even numbers are B band.

Your radio is not capable of recieving air band frequencies. It will only receive 4 bands consisting of: 26 - 54 MHz; 68 - 88 MHz; 137 - 174 MHz and 380 - 512 Mhz.

The VHF airband uses the frequencies between 108 (just above commercial FM radio) and 137 MHZ (just below 2 meter Ham radio). Amplitude Modulation ("AM") is the mode that transmissions are made. The lowest 10 MHz of the band, from 108-117.95 MHz, is split into 200 narrow-band channels of 50 kHz. These are reserved for navigational aids such as VOR beacons, and precision approach systems such as ILS localizers

The manual isn't online to my knowledge however I did find a guide on how to program it.
"Turn it on. Push the "MANUAL" button to stop it from scanning.

Push number 1, then push "MANUAL" again. This should leave you on
channel one.

Using the keypad enter the frequency you want to monitor, then push
"E." Press "REVIEW" at anytime to see what frequency is programmed
there. If the review button flashes 000.0000 on the LED readout
display, you might be entering an invalid frequency. Refer to the list
of acceptable frequencies in the Frequency Range Bands below.

Push "MANUAL" to step to channel number two. Enter the frequency. Push
"E." Push "MANUAL" to step to channel three. Repeat this process until
all the (10) channels are full, or you've run out of frequencies to
enter.

Push "SCAN" to start automatically scanning the frequencies. The
radio will stop when it hears someone talking, and resume scanning two
seconds after the conversation has stopped.

Frequency Range Bands:

20 to 29.7 MHz (10 Meter "Ham" Band)
29.7 to 50 MHz (VHF Low Band)
50 to 54 MHz (6 Meter Amateur Band)
136 to 144 MHz (Military Land Mobile)
144 to 148 MHz (2 Meter "Ham" Band)
406 to 420 MHz (Federal Government Land Mobile)
420 to 450 MHz (70cm "Ham" Band)
450 to 470 MHz (UHF Standard Band)
470 to 512 MHz (UHF "T" Band)"

http://newsgroups.derkeiler.com/Archive/Rec/rec.radio.scanner/2006-01/msg00174.html
Hope this helps.

KNOWING ABOUT MOTOROLLA DEVICES

Motorola devices produce effects as one way communications. For example, device gets powered on from where user selects frequency transmission. User transmits entirely until receptacle device receives messages also replaying entirely until acquired. During the entire transmission processes, each entities waits to receive messages least expecting to transmit simultaneously. Motorola device are one way methods of sending messages also was an old fashioned method compared with recent telecommunications devices. Ascertain that a frequency has been determined from where message would be transmitted. Waiting for the receiver to reply confirms that message was transmitted. Usually with Motorola devices, alternate devices from where reception is captured waits to capture an impression. In a situation that the alternate device at an elsewhere location least transmitted a reply, reset several transitions frequencies to capture an impression as distress call from any alternate device that recognizes the caller at a frequency least prior determined.

WHAT IS EXPECTED FROM MOTOROLA DEVICES

Ascertain that the entity from where the message is derived has alternate methods of producing messages. For example, in a situation that the entity with the receptacle has another transitions device capable of being captured by the Motorola device makes an impression. For example, prior to calling contacts with the Motorola device, another entity that has means to transmit to the device being observed is heard. Ascertain that the device is capable of transmitting at several frequencies. A distress call from another device is captured from the device that has turned a frequency being transmitted distressfully. Ascertain that the caller is from a recognizable contact. In a situation that the caller is least recognizable least requiring any distressful condition requires to tune to frequency from where a recognizable entity can be captured for communications.

Turn on the radio
Press the "band" button
Keep pressing the "band" button until you come within the parameters of the frequency that you want
Let the radio scan until it gets close to the actual frequency that you're looking for
Press the "hold" button and use the arrow "up" or "down" button till you lock in the correct frequency
Once you have the frequency locked in, press the "program" button
Press the "private" button
The unused channel will be flashing
Press the "program" button, this locks the frequency into that channel
Continue this process until all of the frequencies are loaded into the radio

I have searched like crazy and cannot get you a specific answer. I found the Manual for sale on eBay in PDF format.

http://cgi.ebay.com/Regency-Touch-K100-Scanner-Manual-PDF-File_W0QQitemZ150385008548QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2303a51fa4

For $5 it might be worth it.

For all of your scanner needs: ScannerMaster

sounds like this radio is in 440 band and you won't be able to input any frequencies lower than 4300000.00

Typically, but not always, you can hold down a specific key on the front faceplate and hold it down while turning on the power. This will usually ONLY restore the AM channels from 9Khz spacing to USA 10KHz channel spacing, but I don't think it will restore the FM band; I could be wrong - do a google search.. Usually the FM band is Japan is different than ours, and there are some expensive adapters to upconvert/downconvert US FM stations, but not worth the money to add, in my opinion you should just buy a new tuner like the Sony HD radio tuner!

The BCT-7 covers popular frequency bands, skipping things like television signals, non-voice (data) bands, and banned (cellular) bands. It cannot be modified to receive other frequencies. Need the manual for your scanner? You can download/print it here:

http://www.uniden.com/pdf/BCT7om.pdf

For a comprehensive database of active frequencies in your area, visit:

www.RadioReference.com