background image

100 Series

LECTROSONICS, INC.

LM

Power LED

UCR100

Power LED

LM

UH400A

Use fresh alkaline or lithium 9 Volt batter-

ies.   In all cases, observe large and small 

battery contact openings inside the unit 

and orient the battery accordingly prior to 

inserting in the battery compartment.

Turn all transmitters OFF.   Turn the UCR100 ON.  Slide open the door to expose the frequency select switches.  

Set the 100 kHz switch to “8.”  Rotate the 1.6 MHz switch to a position where the green RF LED on the front 

panel does NOT light up.  Then, rotate the 100 kHz switch a few detents above and below where it was origi-

nally set while observing the RF LED.  The idea is to find switch settings 

where the RF LED does not light up, which will be a clear operating 

frequency.

NOTE: 

Video cameras often generate  a  

significant amount of RF noise (interference).

   

Mount the UCR100 on the camera or in the  

position it will actually be used with the audio  

cable connected, and check the green RF LED  

again to see if interference is present.  If the RF  

LED on the receiver remains lit when the transmitters  

are turned off, find new switch settings or re-position the receiver.   

The RF LED should extinguish when the associated transmitter is turned off.

UCR100 receiver 

Push outward on bottom 

then rotate to open.

UH400A transmitter

Slide battery door 

out then swing open.

After installing the battery, 

turn the unit on and check 

to see that the Power LED 

is brightly lit.

LM transmitter

Push outward on 

bottom then rotate 

to open.

Set the frequency selection switches on the side of the transmitter 

to match the switches on the receiver determined in Step 2.  

Ensure the transmitters are oriented so the 

word “Frequency” reads correctly to orient the 

left and right hand switches. 

Step 1: 

Install Batteries

Frequency Switches

0 1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0 1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

1.6MHz

100KHz

Step 2: 

Check for Interference and Select a Clear Frequency 

Step 3: 

Set Transmitter Frequency

Frequency Switches

0 1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0 1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

1.6MHz

(left)

100KHz

(right)

UH400A Power LED

RF LED

Important Note:  Before using transmitters with the UCR100 Receiver, make 

sure they are set to 100 Series Compatibility Mode.  Refer to your transmitter’s 

manual for instructions on how to change compatibility modes.

Reviews: