E F Johnson Company 2424140 Benutzerhandbuch

56

when the radio was set up, not to any programming a 
user can perform. If a feature is controlled by a front 
panel option switch and that switch is not available, it 
is probably not available. 

If the Keypad Programming option switch is 

available, you can reprogram some conventional 
channel parameters. Refer to Section 5.18 for more 
information.

For best results, hold the radio about 1-2 inches 

from your mouth and speak at a normal conversational 
level. Do not shout since it distorts your voice and 
does not increase range. Make sure that the PTT (push-
to-talk) switch is pressed before you begin to speak 
and released as soon as the message is complete.

When approaching the limits of radio range, the 

other party may not be able to hear your transmissions 
and there may be an increase in background noise 
when messages are received. You may still be out of 
range even though you can hear a message. The reason 
for this is that the signal you are receiving is usually 
transmitted at a higher power level than the one trans-
mitted by your radio. Communication may be 
improved by moving to higher ground or away from 
shielding objects such as tall buildings or hills.

A government license is usually required to 

operate this radio on the air. 

If the radio is not responding to any key presses, 

the keypad may be locked. Refer to Section 3.6 for 
more information. 

If “PASSWORD” is briefly displayed when 

power is turned on and you are prompted to enter a 
password, the Power-Up Password feature is enabled. 
Refer to Section 3.2 for more information.

If “UNPROGRAMD” is displayed, the cause 

could be any of the following:

•

An unprogrammed channel is selected. Select a 
programmed channel.

•

The selected channel is programmed for an option 
that is not installed or an error in programming was 
detected. Reprogram the radio.

If no characters appear in the display, the battery 

may be discharged or defective. Try another battery. If 
some other problem is occurring, turn power off and 
then on again to reset the control logic. Also make 
sure that the controls are properly set. If it still does 
not operate correctly, return it for service.