Lectrosonics R1a - Manual (Page 7)

IFB Receiver
Rio Rancho, NM 7
To open the battery
compartment door, push the
door up and away from the case
with your thumb, then swing
open.
1
2
Figure 5 - Battery Replacement
The battery you use in the R1a receiver should be a 9
Volt alkaline or LiPolymer rechargeable type. Lithium
batteries can also be used for extended operating time.
An alkaline or LiPolymer battery will provide up to 8
hours of operation and a lithium battery will provide up
to 20 hours of operation. Carbon zinc batteries, even if
marked “heavy duty” will only provide about 2 hours of
operation.
A green LED corresponds to a fresh battery. The LED
will change to yellow for low battery warning then to red
to indicate the need for a fresh battery.
To replace the battery, open the bottom battery door
cover with your thumb, rotate the door until it is perpen-
dicular with the case and allow the battery to fall out of
the compartment into your hand. It is difficult to install
the battery backwards. Observe the large and small
holes in the battery contact pad before inserting a new
battery. Insert the contact end of the battery first, mak-
ing sure the contacts are aligned with the holes in the
contact pad, and then swing the door closed. You will
feel it snap into place when it is fully closed.
Battery Instructions
Erase All 5 Channel Memories
1. With power OFF, depress the knob and turn the unit
ON. Continue to hold the knob down until the LED
starts rapidly blinking. The memory is now erased
and the unit will go into scan/search mode.
2. Continue from step 3 above - Add New Frequency.
Multiple Transmitter Setup
When using this IFB receiver in a search mode, with
two or more transmitters running at the same time, the
receiver may stop on a false signal under the following
conditions:
• Two transmitters are on and transmitting.
• The distance from the transmitters to the IFB re-
ceiver is less than 5 feet.
The false hits are caused by intermodulation or mixing
in the front end of the IFB receiver. At a 5 to 10 foot
distance, the two carriers are so strong at the receiver,
that even this well designed front end will mix the carri-
ers and produce phantom frequencies. The IFB receiver
then halts its scan and stops on these false frequencies.
All receivers will exhibit this type problem at some trans-
mitter power level and range. You notice false signals
more with a scanning mode receiver since it will find
them all.
Prevention is simple. Do one of the following:
• Do the scan with only one transmitter on at a time.
(Time consuming)
• Increase the receiver to transmitter distance to at
least 10 feet. (Preferred)