FE AT UR ES
Connects R/T to 4 Antennas (Upper, Lower, ADF
or Satcom.
ADF Overide with Key Interlock Prevents
Transmission into the ADF Port
MODEL NO.
100D1788
4 Port Antenna Selector
HDI
Failsafe Mode Connects R/T to Lower Antenna in
the Event of a Power Loss
Auto Mode Cycles Between Upper and Lower Antenna
Using Solid State Relay Saver Circuitry for Reliability
Key Function with Memory Automatically Selects the
Antenna on which the Last Signal was Received
BIT Port for Functionality Test in Aircraft. Available on
Separate SMA Connector or J1 Control Connector
UPPER
ANT
LOWER
ANT
SATCOM
ANT
UHF/DF
ANT
TP1 CONNECTOR,SMA
FEMALE (WITH CHAIN-HELD
DUST COVER)
J2
.28
.63
.19
.50
.48 TYP
.50
.55
1.44
2.625
TP1
J4
J5
J1
J6
J3
J2
4.00
MOUNTING
SURFACES
SOLID STATE
SWITCH U/O
AUTO SEARCH
MODE
J3
J4
J5
K1
S1
.38
1.63
3.00
MAX
2.00
TO SOLID STATE
SWITCH U/O
K3
AUTO SEARCH
RECEIVE MODE
TO ELECTRO-MECHANICAL
SWITCH U/O TRANSMIT MODE
OR MANUAL OVER-RIDE MODE
K4
.56
2.85
3.85
4.85
5.25
J1
LOGIC/MEMORY
SWITCH DRIVER
J6
.196 DIA THRU
4 HOLES
R/T
SHOWN IN AUTO CYCLE MODE
M3470W14-15P
(MIL-C-26482)
(Series 2)
J2 THRU J6
TNC FEMALE PER
MIL-C-39012
.53
.75
1.71
1.21
.09
G U ARANT E ED PE RF ORM ANCE
Parameter
Min Typ Max Units
225
400
150
0.8
1.35/1
50
5
100
500
+71
18.2
OHMS
mSec
W
Average
W
Peak
°C
Intermittent @ +95°C
OZ
MHz
mA
dB
dB
Conditions
At +28 VDC Supply
PART IDENTIFICATION
& SER NO.
ON FARSIDE
.xx = .02
.xxx = .010
Operating Frequency
DC Current
Insertion Loss
Isolation
VSWR
Impedance
Switching Speed
RF Power
Operate
Operating Temperature
Weight
30
-54
+25
DA I C O
In d u s t r i e s
Rev. E / Iss. 1
DAICO [ DAICO INDUSTRIES, INC. ]
