
DRG
GATE OPERATOR #1
24 V RADIO POWER
RELAY 
COMMON 
1
2
3
MANUAL ACCESS 
REQUEST
DRG
Digital Gate Receiver
OBSTACLE
RELAY 
COMMON 
1
2
GATE OPERATOR #2
CHANNEL 
ONE
GRAY
YELLOW
CHANNEL
TWO
SQUEEZE BOTH SIDES AT TABS 
AND TILT UPWARD
DRG2
DIGITAL 
GATE 
RECEIVER
Installation Instructions
(800) 421-1587 • www.linearcorp.com
DESCRIPTION
The DRG is a digital receiver designed for use with automatic 
gate operators or systems where a remote antenna is 
needed. The DRG2 will operate two gates, one ga te and a n 
obstacle sensor or channel one can open the gate and 
channel two can close the gate.
All of the Delta-3 transmitters, including the two and 
four-channel transmitters, are compatible with the the DRG. 
The Delta-3 radio format provides 256 different digita l codes. 
The codes are set using the 8-po sition coding switches in 
the units. In order to avoid the possibility of duplicating codes 
in adjacent systems, factory set codes should not be used. 
The receivers can operate from 16-24 volts AC or 20-30 volts 
DC and are normally powered from the gate operator. The 
relay contact(s) are rated at 5 amps @ 32 volts AC/DC NE C 
Class 2 circuit. 
The DRG has a “F” connector for attaching an antenna. The 
receiver is supplied with a 9-inch local antenna, a three foot 
75 ohm coaxial cable, and a bulkhead connector for 
mounting the antenna outside the gate operator enclosure.
RECEIVER
LOCAL 
ANTENNA BULKHEAD
CONNECTOR
3-FOOT 
CABLE
CASE SCREWS
MOUNTING 
HARDWARE
NUT
WASHER
STEP 1
Open receiver case.
 To open case,
squeeze sides of case and rotate upward. 
STEP 2A
DRG code setting.
 To set a code, 
select any valid combination of ON and OFF 
positions for the switch keys numbered 1- 8. Use 
a paper clip to set the eight keys. 
SET CODE
SWITCH KEYS
CHANNEL ONE
SWITCH KEYS
THIS SWITCH 
HAS 2, 3 & 6 ON
DO NOT USE: 
ALL ON; ALL OFF; 
ALT ON/OFF, OR OFF/ON
STEP 5
Connect receiver to power.
Connect the red power input wire to the 24V radio 
power and the black wire to the common terminal 
on the gate operator. Alternately connect wires to 
a 16-24 VAC transformer.
DRG
Digital Gate Receiver
GATE OPERATOR
BLACK
RED
OBSTACLE
1
COMMON 
2
RELAY
24 V RADIO POWER 
3
INPUT VOLTAGE REQUIREME NT 
     16 TO 24 VOLTS AC 
     20 TO 30 VOLTS DC
MANUAL 
ACCESS REQUEST
STEP 2B
DRG2 code setting.
 Select any 
valid combination of ON and OFF positions for 
each of the switch keys numbered 1 - 8. 
Use a 
different code combination than that used for 
channel one switch. 
SET CHANNEL TWO 
CODE SWITCH KEYS
CHANNEL TWO 
SWITCH KEYS
THIS SWITCH 
HAS 2, 4 & 6 ON
DO NOT USE: 
ALL ON; ALL OFF; 
ALT ON/OFF, OR OFF/ON
STEP 6
Mounting the receiver.
 Use the 
screws provided to mount the receiver within the 
operator housing. This provides protection from 
the elements. Secure case with case screws.
MOUNT RECEIVER 
INSIDE GATE  
HOUSING
SECURE CASE 
CLOSED WITH TWO 
SCREWS AT BOTTOM 
OF CASE
STEP 3
Transmitter code setting
. Locate 
the coding switch on the transmitter and set the 
eight keys identical to those on the desired 
channel of the receiver. 
 If using a two or four-channel
exactly.
Be sure they match
transmitter, refer to the coding instructions 
included with the transmitter for proper system 
coding.
REMOVE BATTERY 
ACCESS DOOR
SWITCHES IN 
TRANSMITTER
CODING
STEP 7
SWITCH
Connect antenna.
THIS SWITCH 
HAS 2, 3 & 6 ON
 Connect the 
coaxial cable to the “F” connector on the receiver. 
Drill a 3/8" hole on the top of the operator housing 
for the bulkhead connector. Insert the connector 
and secure it with the nut and lock washer. 
Connect the cable and antenna to the operator.
SLIDE WEATHER 
RESISTANT CAP
CONNECT COAXIAL 
CABLE TO "F" 
CONNECTOR
OVER CONNECTION
INSERT BULKHEAD 
CONNECTOR THROUGH 
OPERATOR HOUSING
SECURE CONNECTOR 
TO HOUSING USING 
WASHER AND NUT
CONNECT CABLE TO 
BULKHEAD CONNECTOR
STEP 4
Connect receiver relay output.
Connect the appropriate channel wires (Ch. 1 two gray wires), (Ch. 2 - two yellow wires) to the 
appropriate activation terminals on the gate 
operator. 
This product is warranted to the consumer against defects in m aterial and workmanship 
for one year from the date of purchase. This war ranty a pplies to f irst ret ail buyers of 
new devices. Warrantor will repair, or at its option, replace, any device it finds that 
requires service under this warranty, and will return the repaired or replaced device to 
the consumer at the warrantor’s cost. For warranty service and shipping instructions 
contact warrantor at t he ad dres s s hown below . D evice s must be sent to w ar ran tor for 
service at owner’s ex pense. The remedies provi ded by this warranty are exclusive. 
Implied warranti es  un de r state law are to  th e one year peri o d of this written wa rranty. 
Some states do not allow limitations on how long an implied warrant y lasts, so the above 
limitation may not apply to you. In order to be protected by this warranty, save your 
proof of purchase and send copy with equipment should repair be required. This 
warranty gives you specific legal rights, and you may also hav e other rights which vary 
from state to state. 
All products return ed for warranty service require a Return Product Autho rization 
Number (RPA#) . Contact Li near Technica l Services at 1-800- 421-1587 for an RPA# 
and other importan t d et ai ls .
IMPORTANT !!!
Linear radio controls provide a reliable communications link and fill an important need 
in portable wireless signaling. However, there are some limitations which must be 
observed.
For U.S. installations only: The radios are required to comply with FCC Rules and
✶
Regulations as Part 15 devices. As such, they have limited transmitter power and 
therefore limited range. 
A receiver cannot respond to more than one transmitted signal at a time and may be
✶
blocked by radio signals that occur on or near their operating frequencies, regardless of 
code settings. 
Changes or modifications to the device may void FCC compliance.
✶
Infrequently used radio links should be tested regularly to protect against undetecte d
✶
interference or fault. 
A general knowledge of radio and its vagaries should be gaine d prior to acting as a
✶
wholesale distributor or dealer, and these facts should be communicated to the ultimate 
users.
Copyright © 1999 Linear Corporation 211090 B
LINEAR LIMITED WARRANTY