Operations and Maintenance Manual
70-STR1800-00 Rev K STR-1800 O&M Manual
- 4 -
per TIA-603-C
Intermodulation
65 dB minimum
Dynamic Range
With input signals ranging from -100 dBm to 0 dBm, the SINAD at the receiver is
23 dB minimum when receiving a signal modulated with a 1 KHz tone at 60%
rated deviation
Sensitivity
12 dB SINAD minimum for input signal level of -116 dBm
Spurious and Image
Rejection
70 dB minimum
Transmit to Receive
Recovery Time
30 msec maximum measured from removal of keying signal to the transmitter
Audio Output
A 1 KHz signal at 60% rated deviation produces a 900 mV p-p ±10% audio output
into a 600 ohm resistive load. Does not apply to STR-1821 or STR-1821A radios.
Receive Frequency
Response
Flat response over the 300-3000 Hz range with no de-emphasis.
Does not apply to STR-1821 or STR-1821A radios.
Receiver Overload
A +28 dBm signal continuously for 30 minutes applied to the antenna input will not
cause any permanent damage.
Dimensions
Approximately 1.8" high x 6.35" wide x 7" deep
Weight
4.5 pounds
Vibration
Per EN 50155 Railway Applications - Electronic Equipment Used on Rolling Stock
Shock
Per EN 50155 Railway Applications - Electronic Equipment Used on Rolling Stock
Temperature
-30C to +60C (operating and storage)
Humidity
Per EN 50155 Railway Applications - Electronic Equipment Used on Rolling Stock
Altitude
Sea level to 12,000 feet operating and 50,00 feet non-operating
1.4 Reference Documentation
The latest revision of the below documents serve as an addendum to this document. Users are referred to
these documents for maintenance and design information pertaining to the standard ICOM radio circuitry.
Service Manual – VHF Transceivers – IC-F5062 © 2007 Icom Inc.)
Service Manual – UHF Transceivers – IC-F6061/6062/6063 © 2007 Icom Inc.)
1.5 Declaration of Conformity (Model STR-1830, STR-1840)
Summation Research, Inc. declares that when used in its intended application the radio unit STR-1830 and
STR-1840 complies with the essential requirements of the European Radios and Telecommunication
Terminal Directive 1999/5/EC (R&TTE directive).
Models STR-1830 and STR-1840 can be operated in the countries of the European Union (EU). Outside of
the EU apply the national regulations of the relevant country. This equipment may operate in non-
harmonized frequency bands and/or may be subject to licensing conditions in the country of use. Be sure to
check that you have the correct programming of this radio, to comply with national licensing requirement.