|
General
Frequency Agility: 360-512 MHz, 895-960 MHz*
Channel Spacing: 12.5 or 25.0 kHz
Data Rate: 300 to 9600 BPS (Wideband)
Input Voltage: 110/220 VAC; 12, 24, 48, 125 VDC
Input Power: 60 Watts
Transient Protection: 2500 V Isolation on VF
Input/Output, Keying, Alarm and Power Circuits
Connectors
Alarm Outputs
One each form C dry contact closure relay for module
malfunction and AC failure.
Environmental
- Temperature: -30°C to +60°C
- Humidity: 95% at 40°C
Dimensions: 19"W x 5.25"H x 17"D,
Rack Mount
Weight: 35 lbs.
FCC Information
For 360-512 MHz
- FCC Rules: Parts 90 & 15
- FCC Identifier: JIL1800B
- FCC Emission Designators:
For 895-960 MHz
- FCC Rules: Part 101 (94)
- FCC Identifier: JIL1800
- FCC Emission Designators:
- 25K0F1D
- 16K0F2D
- 20K0F3D
- 12K5F1D
- 11K0F2D
- 12K5F3D
Industry Canada Certification:
Pending
Transmitter
- RF Power: 5 Watts (Adjustable: 0.1 to 5.0 Watts)*
- Impedance: 50 Ohms
- Duty Cycle: Continuous
- Transmitter Attack Time: < 1 msec
- Frequency Stability: 0.00015% (1.5ppm) -30°C
to +60°
- Modulation Deviation:
- 12.5 kHz Band: +/-3.0 kHz
max.
- 25 kHz Band: +/-5.0 kHz max.
- Spurious and Harmonic Emissions:
-65 dB
- Audio Input Levels: -20 to
+10 dBm, Adjustable
- Frequency Response: +1/-3 dB;
300 to 3000 Hz
Receiver
- Type: Double Conversion Superheterodyne
- Frequency Stability: 0.00015% (1.5ppm) -30°C
to +60°C
- Sensitivity: -117 dBm (0.3 microvolts) 12 dB SINAD
- Selectivity: -100 dB Minimum at Adjacent Channel
- Desensitization:
-
- -65 dB (EIA) at 12.5 kHz
Spacing
- -70 dB (EIA) at 25.0 kHz
Spacing
- Intermodulation: -75 dB (EIA)
- Spurious/Image Rejection: -85
dB
- Audio Output Levels: -20 to
+6 dBm, Adjustable
- Frequency Response: +1/-3 dB,
300 to 3000 kHz
- Bit Error Rate:
-
- 1200 bps: BER 1x10-6 at
-110 dBm
- 4800 bps: BER 1x10-6 at
-110 dBm
- 9600 bps: BER 1x10-6 at
-108 dBm (Wideband)
-
Options
and Accessories
Modems
- 1200 BPS, Bell 202 Compatible: RS-232
- 300-9600 BPS, Asynchronous Operation; Digital Interface
- RS-232
- Transmitter A/B Cycle
- Over-the-Air Diagnostics & Control
- Repeater Diagnostics
- Dial-up Auto Answer
*Contact the factory
for other frequency bands and power levels.
|
Repeater Station Diagnostics
Diagnostic functions can also be performed "over-the-air"
for hilltop repeater stations from a central master
station.
Advanced Diagnostic Software
This optional software is designed to run on an IBM
PC/AT or PC/AT-compatible computer connected to a Model
1800A radio. The PC may connect to the master station
locally, via telephone line or microwave link, without
the use of modems.
When running this software, a PC may monitor and report
the Model 1800A's performance. Using the software-provided
commands, a technician can display a graphic representation
of the front panel, remotely select the transmitter,
and perform a battery test. The software can also display
any of the following parameters:
-
- RF Output
- Supply Current
- Power Supply Voltage
- RSSI
- Frequency Offset
- FM Deviation
|
- PTT Keying Mode
- DOX/VOX Enable
- Repeater Status
- TX/RX Frequencies
- On-Board Time Clock
- ...and more!
|
Figure 4: The Received Signal
Status command updates information regarding a user-specified
group of radios.
Figure 5: The Front Panel Display
command allows users to switch transmitters via phone
line or microwave link.
Figure 6: Real-Time Diagnostics
include the latest readings for Current Transmitter
Power Output, Supply Current, and Power Supply Voltages.
Figure 7: The Remote Diagnostics
command polls a user-specified group of radios and displays
their diagnostic parameters in a single table.
Figure 8: The Real-Time Diagnostics
command also continuously updates remote radio operating
parameters. Alarm limits are user-programmable.
|
