Uniden UM-525 ユーザーズマニュアル

Setting Up The Radio

•

All connections are “plug-in” type for easy removal of the radio.

•

By using an optional WHAM or WHAM x 4 (Wireless Handheld Access Microphone), the 
UM-525 can be mounted completely out of the way.

•

Also optionally available is a flush mount bracket (FMB321).

Here are some important factors to consider in selecting the location for your UM-525.
•

The UM-525 is completely waterproof, but will last longer if protected from spray and 
splash.

•

Keep the battery leads as short as possible. Direct connection to the battery is most 
desirable. If direct connection can not be made with the supplied power lead, any extension 
should be made with #12-14 AWG wire. Long extensions should use larger gauge wire.

•

Keep the antenna lead-in wire as short as possible. If you must use a long lead-in wire as in 
the case of a sailboat masthead antenna installation, we recommend you upgrade your 
lead-in wire according to the following table:
RG-58 <20'
RG-8X <35'
RG-8U <60'

•

Locate your antenna as high as possible and clear from metal objects. The reliable range of 
coverage is a direct function of the antenna height.

•

Select a location that allows free air flow around the heat sink on the rear of the radio.

•

Select a location well away from the ship's compass. Auxiliary speakers also should be 
located away from the compass.

Interference from the noise generated by the electrical systems of engines is sometimes a 
problem with radios. The UM-525 has been designed to be essentially impervious to ignition 
noise and alternator noise. However, in some installations it may be necessary to take 
measures to further reduce the effect of noise interference. The UM-525 radio DC battery 
wires, antenna lead, and accessory cables should be routed away from the engine and engine 
compartment, and from power cabling carrying high currents. In severe cases of noise
interference, it may be necessary to install a noise suppression kit. Contact the dealer where 
you purchased the radio for more information.

After you have carefully considered the various factors affecting your choice of location, follow 
these steps to install the radio.
1.

Position the radio (with the bracket, microphone, power cord, antenna and any auxiliary 
cables installed) into the selected location to assure there is no interference with the 
surrounding items. 

2.

Mark the location of the mounting bracket. 

3.

Remove the bracket from the radio and use it as a template to mark the holes to be drilled 
for the mounting hardware.