Nady U-800 Manual - Page 9

9

Powering the Receiver

Plug the

AC/DC ADAPTER (23)

provided into the

DC INPUT JACK (20)

on the back of the receiver. Then plug the power supply into an AC outlet. (Note:

Any 22V DC source with 400mA capability can also be used.) Press the

POWER

SWITCH (1)

once to turn on the receiver. The

POWER ON LED (2)

and the

LCD

DISPLAY (5)

will now light and the receiver is operational.

Adjusting Antennas

The U-800 has two permanently attached, flexible elbow

ANTENNAS (3)

for diver-

sity reception. Unfold and rotate these antennas to operate the receiver. The optimal

positions of the antennas are flared 45° out from the receiver sides and 90° from each

other. For maximum range, it is always best to maintain a line-of-sight (no obstructions)

between the receiver antennas and the transmitter at all times whenever possible.

Adjusting the Mute Level/ RF Squelch

The

MUTE LEVEL/RF SQUELCH (13)

can be changed anytime during the main

screen display to quiet the receiver in high noise environment condition. The control

ranges are from level 0 to level 5. The level should be adjusted to a lower number

for the minimum RF squelch setting at which the

RF INDICATOR (8)

will remain on

while your transmitter is in normal use, up to the maximum operating range antici

-

pated in use for your application. However, in areas of high RF activity, the squelch

control may need to be adjusted to a higher number. If the transmitter is off and the

receiver’s signal RF INDICATOR (8) or the diversity

A or B INDICATOR (9)

flickers

or stays on continuously, the squelch should be adjusted to a higher number to stop

the flickering. Be careful not to select too high a number setting as this may reduce

the operating range to below what is needed. A range walk test will help in select-

ing the proper level. If the range is not critical, note that a higher level (maximum

squelch) setting will also yield a quieter mute function, which might be desired in

certain applications. The squelch level is factory preset at maximum sensitivity and

operating range (i.e. level 0 for minimum squelch level—maximum usable range).

Note:

For easier intuitive operation, the MIN and MAX indications for this control

refer to the minimum and maximum operating range settings, not to the actual mute

levels selected, which are the opposite as per above.

Keyboard/Buttons Lock Function

Use keyboard/Buttons Lock Function to lock or unlock the receiver controls, prevent-

ing accidental adjustment during use: You can push and hold MENU BUTTON (18),

then push UP BUTTON (16) to lock; push and hold MENU BUTTON (18), then

push UP BUTTON (16) again to unlock. The Keyboard/Buttons must be unlocked

before you can make a selection: AUTO SCAN, Group/Channel or MUTE levels.

Nady U-800 Manual - Page 9

Adjusting the Mute Level/ RF Squelch

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