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CORNERSTONE SMR INCORPORATED

ESP504

The ESP504 is a synthesized, microprocessor based, dash mount mobile transceiver designed to meet the rigid technical criteria for the new 220 to 222 MHz radio service.

  • TRUNKED OPERATION
  • CONVENTIONAL OPERATION
  • 4 MODES
  • SCAN
  • REPEATER TALKAROUND
  • 20 WATTS RF POWER
  • EXTERNAL MOBILE PROGRAMMING
  • SYNTHESIZED
  • DIE CAST CHASSIS
Incorporating the latest technologies, SEA provides an advanced featured mobile radio that meets the requirements of radio system operators and users for reliability, durability, and operational ease of use.

Model ESP504 utilizes state of the art narrowband radio technology and digital signal processing (DSP) to meet the highest standards of operational performance.

Standard features include an internal speaker, four operational modes, scan, user-programmable scan list, out-of-range indicator, horn alert and 20 Watts peak envelope RF power output.

Through the inherent strength of a one piece die cast chassis, surface mount manufacturing precision and solid state components, the ESP504 mobile achieves the highest standards of performance and reliability found in professional communications products.

FEATURES & BENEFITS

Trunked and conventional operation...
One radio for two kinds of systems. An ESP504 can operate in trunked radio systems, conventional radio systems, or both.
4 modes...
Capable of operating in four different radio systems to meet the needs of fleets with large operating areas.
Repeater talkaround...
Mobile to mobile communications when outside repeater range
Scan...
Mode scan to insure that all calls are received.
20 Watts RF power output...
Enough power to provide reliable communications and not exceed FCC limits.
External EEPROM programming...
Easy mobile programming saves time and money.
Die cast chassis...
Rugged construction for long life.

SEA ESP504
SPECIFICATIONS

GENERAL
Frequency Range: TX: 220-222 MHz
RX: 220-221 Mhz
Channel Spacing: 5 kHz
Modes: 4
Dimensions (HxWxD): in: 2.35 x 7.45 x 9.75
cm: 5.97 x 18.90 x 24.76
Weight: lbs: 4.10
kg: 1.86
Temperature Range: -30°C to +60°C
Input Voltage: 13.6 VDC (negative ground)
Current Drain: Transmit: 4 A
Receive: 1 A
Standby: 500 mA
Antenna Connector: Mini UHF
FCC Type Acceptance ID: BZ68RIESP504
FCC Compliance: Parts 15 and 90
 
RECEIVER
Sensitivity: 12 dB SINAD <0.35 uV
Adjacent Channel Rejection (5 kHz): >60 dB
Spurious and Image Rejection: >70 dB
Intermodulation Rejection: >70 dB
Modulation Bandwidth: 4 kHz
AGC Range: 100 dB
Audio Output Power: 4 watts @ 3.2 ohms
Audio Distortion: <5%
Input Impedance: 50 ohms
 
TRANSMITTER
RF Power Output: 20 Watts Peak Envelope Power
Frequency Stability: ±1.5 ppm*
Spurious & Harmonic Emissions: >70 dB
FM Hum & Noise: -34 dB
Emission Designator: 4K00J3E
Audio Distortion (@ 1 kHz): <5%
Output Impedance: 50 ohms
* synchronization to ESP1000 base station achieves ±0.25 ppm
 
Specifications subject to change without notice or obligation.