Have older model mobile unit-is locked on channel 1 will not scan-no buttons work- channel 1 does receive transmissions-squelch works-???

Make sure the volume is up a little and then make sure the squelch is set so you do not hear any static (white noise). Also make sure the lock button is not on. Depending on the model, make sure the channels are not locked out in the menu. Make sure there are frequencies programmed in the channels. If these suggestions don't work, tell us more about the scanner like model number, how many channels, crystal or programmable, etc.

All these cat scanners work pretty mich the same
There are several ways. First, turn the scanner on and adjust the squelch so that it is quite. Then press the manual button to flip through the 16 channels. Stop on the channel you want to program. Then, type in the frequency followed by the "E" key on the lower right of the keypad. Hit the manual button to move to the next channel and repeat the process above.

You can also "scan" for a frequency. Here is how: Use the manual button to get to one of the channels. Now type in "120.0 followed by pressing the "limit" button. Now type in "125.0" and press the "limit" button again. Now press the "scan" button. The scanner will now search all frequencies between 120.0 and 125.0 on that channel and will pause and listen should a transmission happen. You can do this "limit" scan for any frequency range that the scanner is capable of receiving. Once you hear a transmission, you can press the "hold" button to stay on that received frequency. Pressing the "E" button will lock that frequency into that channel.

Hi Chad,

Do you have any frequencies programmed into your radio scanner?

If not, then that is why you're not receiving anything.

If on the other hand you do have frequencies programmed, are they the correct frequencies for your location?

Are the frequencies the Tx or Rx frequencies that you programmed, The Tx frequencies are the correct frequencies to program, as Rx is the mobile(usually) Tx frequencies, and unless you're within 5 miles of that mobile, you won't hear it, and you certainly won't hear the base transmissions, unless it's a high powered Simplex Frequency.

I hope this has been useful to you.

Cheers,
Peter

In order to get the most out of your new radio, read this reference guide completely before attempting to operate the radio.

Turning the Radio On and Adjusting the Volume

1) Press and hold the key to turn the radio ON.

2) To change the volume level press the volume/monitor up or down key to increase or decrease the volume level.

3) Press and hold the key to turn the radio OFF.

Adjusting the Sound (Key Beeps)

Your radio emits a beep each time one of the keys (except for the PTT button and call key) is pressed.
The sound of the Key Beep will increase or decrease depending on the volume level setting.

To turn OFF this beep:

Press and hold the call key while turning ON the radio.

To turn ON this beep:

Turn the radio OFF and ON again.

Choosing a Channel

Your GMR325-2 radio has 22 channels you can use to talk to others. In order to speak to someone,
each of you must be set to the same channel.

To choose a channel:

Press the channel/scan up or down key to increase or decrease the channel number displayed.

Channel Scan Feature

Your GMR325-2 radio has a channel Scan feature that allows you to easily Scan all 22 channels. When an active channel is detected, the unit will pause on that channel until the channel is clear. Then after a 2 second delay, the unit will continue scanning.

Pressing PTT button while the Scan is paused on a channel will allow you to transmit on that channel.

To turn ON channel scanning:

Press and hold either the channel/scan up or down key. The channel number on the display
will rapidly cycle through the channels.

To turn OFF channel scanning:

Press either the channel/scan up or down key.

Talking on Your Radio

To talk to others using the radio:
1) Press and hold the PTT button and speak in a clear, normal voice about 2-3 inches away from the microphone.

While you are transmitting the tx icon is displayed. To avoid cutting off the first part of your transmission, pause slightly after pressing the PTT button before you start talking.

2) When you are finished speaking, release the PTT button.You can now receive incoming calls. While receiving, the rx icon is displayed.

Transmitting a Call Alert Tone

Your GMR325-2 radio is equipped with a call tone that will be transmitted when the call key is pressed.

To transmit the call alert tone, press the call key.

The tone will automatically be transmitted for a fixed length of time.

Auto Squelch Feature

The GMR325-2 is equipped with an automatic squelch system which shuts off weak transmissions
and unwanted noise due to terrain conditions or if you have reached your range limit.

Monitor Mode Feature

Your GMR325-2 radio allows you to listen for weak signals on the current channel at the press of a key.

To turn ON monitor mode:

Press and hold the volume/monitor up or down key. The rx icon will blink.

To turn OFF monitor mode:

Press the volume/monitor up or down key. The rx icon will stop blinking.

Automatic Power Save Feature

Your GMR325-2 has a unique circuit designed to dramatically extend the life of the batteries. If there is neither transmission nor an incoming call within 2 seconds, your radio switches to the Power Save mode. The radio is still able to receive transmissions in this mode.

KEYLOCK ON/OFF

Press and hold the call key until the "L" appears. After 1 second, the LCD will return to the channel display.
To exit Keylock on mode, press and hold call again.

Note: While in keylock on mode, it will still receive transmissions.

ROGER BEEP

Roger Beep is a BEEP that is sent to notify the end of transmission.
Roger Beep can be heard through the speaker when Key Beep is on.
Roger Beep is transmitted even if key beep is turned off. However Roger Beep will not be heard from the speaker.

To turn OFF Roger Beep: Press and hold the channel/scan up Key while turning on the radio.

turn up the volume, turn the squelch until it is hissing, slowy turn it back until it stops hissing, scanning should resume.

PROGRAMMING YOUR SCANNER

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

www.RadioReference.com


1. Turn on your scanner by turning VOLUME clockwise.

2. Press [MANUAL], enter the channel number you want to program, then
press [MANUAL] and [PROGRAM]. The channel number flashes to indicate
you are programming the channel.

3. Enter a frequency.

4. Press [ENTER] to store the frequency. If you make a mistake in Step
3, ERROR appears on the display. Proceed again from Step 3.

5. If you want your scanner to pause after each transmission before
scanning to the next channel, press [DELAY] so that DELAY appears in
the display. See "Using the Delay Feature."

6. To program more channels, repeat Steps 2-4. If you want to program
the next channel in sequence, simply press [PROGRAM] and repeat Steps
3 - 4.

SETTING THE VOLUME AND SQUELCH CONTROLS

Use the SQUELCH control to decrease your scanner's sensitivity to weak
signals. This allows the scanner to receive only the strongest
transmissions.

1. Turn the SQUELCH and VOLUME controls fully counterclockwise.

2. Turn the VOLUME control clockwise until you hear a hissing sound.

3. Slowly turn the SQUELCH control clockwise until the hissing sound
stops.

SCANNING THE CHANNELS

To begin scanning the channels, press [SCAN]. Your scanner scans through
all the channels except the ones you have locked out. Be sure to read the
following sections to get the full benefit from your scanner's special
features.

USING THE DELAY FEATURE

Many agencies use a two-way radio system that might have a 2 second silence
(or more) between a query and a reply. To keep from missing a reply,
program a delay on the channels you identify as operating this way.

To program a delay, select the channel and press [DELAY] so that DELAY
appears on the display. Now when your scanner pauses at an active channel
when scanning, it waits for 2 seconds after the completion of each
transmission on that channel before it resumes scanning.

If you do not want your scanner to pause, select the channel and be sure
that DELAY is not on the display. If DELAY appears on the display, press
[DELAY] to turn it off for that channel.

LOCKING OUT CHANNELS

You can make your scanner scan more efficiently by locking out channels
that you have not programmed. Manually select the channel and press [LOCK
OUT] so that LOCK OUT apperas on the display. This is also handy for
locking out channels that have a continuous transmission. You can still
manually select locked-out channels for listening.

To unlock a channel you have locked, manually select the channel and press
[LOCK OUT] so that LOCK OUT disappears from the display.

NOTE: You cannot lock out Channel 1.

USING THE PRIORITY FEATURE

Channel 1 is designated as your scanner's priority channel. You can turn
on the priority feature so that you do not miss transmissions on Channel 1,
even if you are monitoring another channel.

Press [PRIORITY] so that PRIORITY appears on the display. Now your scanner
checks Channel 1 every 2 seconds, and stays on the channel if there is any
activity.

MANUALLY SELECTING A CHANNEL

You can continuously monitor a specific channel without scanning. This is
useful if you hear an emergency broadcast on a channel and do not want to
miss any details-even though there might be periods of silence-or if you
want to monitor a specific channel.

Follow these steps to manually select a channel.

1. Press MANUAL.

2. Enter the channel number.

3. Press MANUAL again.

Or, if your scanner is scanning and stops at the desired channel, press
MANUAL one time. (Pressing MANUAL additional times causes your scanner
to step through the channels.)

LISTENING TO THE WEATHER BAND

The FCC (Federal Communications Commission) has allocated several channels
for use by the National Oceanic and Atmospheric Administration (NOAA). We
have preprogrammed your scanner with all of the frequencies available to
NOAA. To hear your local forecast and regional weather information, simply
press [WX]. Your scanner begins scanning through the weather band, and WX
SEARCH appears on the display.

Your scanner should stop within a few seconds, and you hear the local
weather broadcast. If the broadcast is weak, you can press [WX] again
to scan through the rest of the weather band.

Bill B

Hi,
Try these instructions from Wiki.answers

Turn on unit.
Press MANUAL button.
Press MANUAL button again to select the channel you want to program. Note the channel in the display. If there is a hyphenated symbol in the upper left corner the channel has been locked out. Press the LOCKOUT button once to remove the symbol or press the LOCKOUT button to lock a channel out. To find out if there is a frequency programed into that channel, press the PREVIEW button. Each digit of the frequency that is stored in memory will be displayed in the LED display. To program a new frequency into that channel, simply press the digits of the frequency you want, including the decimal point. Press the "E" keypad key to enter it into memory. If you get a "E" displayed in the LED display, the frequency was entered wrong, is not a valid frequency or is out of range for the scanner. Last but least, the scanner is not working properly. If the channel is active, (communications going over it) set SQUELCH to higher number, until you hear the communications or just noise. To set the SQUELCH, select a channel that has only noise and turn it down to the point the noise disappears. You make have to readjust it to your liking. Once you have the channels programed you can select the SCAN button to listen to all the channels or select the MANUAL button to listen to just one channel. If there are channels that you don't want to hear during the scan mode, go to MANUAL and select the channel you don't want to hear and press LOCKOUT button. Then press SCAN again it will only scan channels you want to hear.

Hope this helps.

Not sure about your particular model but many modern scanners have a "wait" function that can be used during a scan. Actual details vary from model and manufacturer.

I do believe you are seeing that behavior. Quite often this can happen regardless os a manual squelch setting.

If for instance it was set to scan for a low signal level AND (pause or stop) at that channel then no matter what you turn the squelch to it will do what it was told from another menu.

You should check the advanced scanning section of your manual for any similar functions.

If you are using software to run the scanner this too may have a similar setting so check there too.


If this information was useful please click below

Check for Squelch Codes you can see on the display channel number and sub chanel number this is the squelch code
Both displays must show the same icons
If both are the same, try with and audio accesorie, if works may be your speaker is broken.

When you get to CB or whatever bank you want to search you must press the E/YES and then it should search. Also check your squelch. Hope this helps you out.