User Manual - RCVR
LR
LECTROSONICS, INC.
16
Firmware Update
As of the date of this writing, the firmware update pro-
gram runs only on a Windows operating system.
Updating the firmware is simply a matter of download-
ing a utility program and file from the web site and 
running the program with the receiver connected to a 
computer via the USB port.
Go to www.lectrosonics.com/US. Click on SUPPORT 
in the top bar, then click on L-Series in the catego-
ries list. Click on the link labeled Firmware Updates 
at the bottom of the screen. Download the Firmware 
Updater program zip file and extract it to a temporary 
folder on your computer. Then download and extract 
the firmware zip file (e.g. lrv1_16.zip) and extract it to a 
temporary folder on your computer.
Hold down the UP and DOWN arrow buttons on the 
receiver while powering it up. The receiver will display 
UPDATE to confirm it is in this mode. Plug in the USB 
cable and run the utility program. The program will 
automatically detect the receiver and prompt for the 
location of the firmware file. Point at the file and click 
on Start. The process takes about 90 seconds.
Antenna Orientation
The antennas are most sensitive perpendicular to 
the axis of the whip. The pattern is a toroidal (donut) 
shape surrounding the antenna. A cross section of 
the pattern is depicted in the illustrations below.
The best orientation is to keep the antenna whips 
elevated and oriented vertically to provide a circu-
lar pattern around the transmitter and receiver. The 
whips can point up or down.
The receiver can be mounted horizontally and swiv-
eling antennas can be adjusted to keep the whips in 
a vertical orientation, as shown in Fig. 2.
It is also good practice to keep the antennas away 
from metallic surfaces. 
Tx
STRONG
SIGNAL
WEAK
SIGNAL
Rx
Rx
Tx
WEAKEST
SIGNAL
Rx
Tx
Tx
STRONG
SIGNAL
Rx
Fig. 1
Fig. 2
Fig. 3
Fig. 4










