S & SD Series Repeater
P25 Digital Repeater Two-way Radios
S & SD Series P25 Repeaters

Powerful, Innovative, Rugged and Reliable. The new S & SD Series is the smallest full specification Base Station/Repeater in its class. Flash based software design allows future upgrades for new features. With advanced modular construction techniques, you are assured of reliable and long lasting performance.
 

S & SD Series Repeaters and Base Stations
Features, Options and Specs

S & SD Series P25 Repeaters


S & SD P25 Digital Two-way Radio Repeaters

  • Features  
  • Options  
  • General  
  • Receiver  
  • Transmitter  

 

S & SD SERIES FEATURES

P25 Repeater Option Board
(opt.T80)

Transparent Mode:
Repeats Mixed Mode, P25 Digital and Analog transmissions.
Automatically switch to P25 mode on reception of P25 carrier.
Passes P25 NAC unchanged.
Passes P25 private call and group call.
Passes P25 clear or encrypted.
Front panel indicators show P25 status.
Benefits of Digital Audio Performance.
Design based around proven architecture.

P25 Base/Repeater Option Board
(opt. T81)

(Firmware dependant upgrade from opt. T80)
Includes T80 features as standard.
Programmable external PTT mode (P25 or Analog) P25 Digital audio from mic socket and line.

P25 Base/Repeater with Fixed Station Interface (FSI) per P25 Standard.
(opt. T82)

Same features as T80/T81 option above but with the following hardware and features:
Ethernet interface with digital audio or digitized analog audio; DFSI P25 Stream AMBE +2 or G711.
DFSI Analog Stream G711.
Passes through P25 encrypted to Ethernet.
Ethernet remote diagnostics and remote control.
Tone Remote Control with E&M, 2/4 wire audio interface.
Conforms to Standards to TIA102-BAHA.

P25 Base/Repeater with Fixed Station Interface (FSI) and Data Packet Repeat. (opt. T83)
Same hardware and features as the T82 option but with the added Data Packet Repeat Service.
This is provided by the Command Air Interface by the transmission and reception of data packets. Example of this use is with subscriber GPS positioning.


System independent, no additional software program required

 

 

S & SD SERIES OPTIONS

Includes LZAST82 functionality:
ST03: Programmable CTCSS/CDCSS
ST13: Local speaker and mic input
ST14: Local 99 channel selector
ST15: RX & TX Type N connectors
ST32: Front Panel adjustable Line I/O levels & Front panel RS232 port
ST08: VF audio delay
Enhanced AMBE +2 (V1.6) Vocoder
Digital audio interface to local controls
Ethernet interface with digital audio or digitized analog audio
Ethernet remote diagnostics and remote control
Tone remote control with E&M, 2 / 4 wire audio interface.

Supplementary APCO P25 Digital Radio Specifications:

Conforms to Standards: TIA102
P25 Repeater Throughput Delay: <80ms
Frame Re-sync Interval: 180ms
Signaling Rate: 9.6kbps
Digital ID Capacity: 10,000,000 conventional
Digital Network Access Codes: 4,096 network site
Digital User Group Addresses: 4,096 network site
P25 User Group Addresses:
65,536
Error Correction Techniques: Golay, BCH
  Reed-Solomon codes
  TIA102
RX Audio Processing Delay  
P25 Digital: TIA102 CAI
Analog: 40ms
   

 

 

GENERAL S & SD SERIES
RF Power Output 1W to 50W variable,
1W to 100W option variable
Frequency Stability 20PPM VHF-Low, 1.5PPM VHF,
1.0 PPM UHF/800 MHz
Audio Response Flat within +1, -3dB across BW
Audio Bandwidth DC to 3400Hz (DC FM input)
300Hz to 3400Hz (VF input)
Modulation Distortion Less than 2% @ 60% deviation
S/N Ratio below 700MHz Better than 50dB (WB), 45dB (NB)
S/N Ratio 700-900MHz Better than 50dB (WB), 44dB (NB)
S/N Ratio above 900MHz Better than 47dB (WB), 41dB (NB)
Spuri and Harmonics More than 100dB below carrier
RF Switching Bandwidth Exciter Same as band allocation
RF Switching Bandwidth PA Same or greater than band allocation
Duty Cycle 100% for 50W and 100W RF output
RF Rise Time 4mS with continuous VCO selected
Typical Supply Current (470MHz) 50W:8.6A, 25W:6.2A, 15W:5A
10W:4.3A, 5W:3.3A, 1W:2.1A
Typical Supply Current for 100W Output 15A
VCO Conducted Emissions Less than -70dBm with TX off
VCO Radiated Emissions Less than 1uV/m @ 3m
Adjacent Channel Power 78dB (WB), 72db (NB)
Transmitter IM Conversion Loss Better than 40dB
Automatic VSWR Foldback Trips at nominal VSWR>3:1
Output Load Impedance 50ohms nominal (VSWR<2:1)
Antenna Connector N-Type Female
   

 

 

RECEIVER
Measured in accordance with TIA/EIA-603 Standards
Sensitivity for 12dB SINAD Better than -117dBm (0.32uV)
Sensitivity for 20dB SINAD Better than -115dBm (0.4uV)
Selectivity 30-50 MHz More than 90dB for 12.5 kHz adj ch.
More than 80dB for 12.5 kHz adj ch.
Selectivity 66-88 MHz More than 85dB for 12.5 kHz adj ch.
More than 75dB for 12.5 kHz adj ch.
Selectivity 135-520 MHz More than 84dB for 25 kHz adj ch.90dB option available on special request
Selectivity 700-900 MHz More than 80dB for 25 kHz adj ch.More than 70dB for 12.5 kHz adj channel
Selectivity 900-960 MHz More than 75dB for 25 kHz adj ch.
More than 65dB for 12.5 kHz ch.
Audio Bandwidth VF Output 300 Hz to 3000Hz (+1,-3dB)
Discriminator Output Bandwidth DC to 3400Hz (-3dB)
Spurious Response Immunity Better than 90dB
Intermodulation Immunity Better than 82dB (WB), 80dB (NB)
Blocking Rejection Better than 110dB at +/- 1MHz point
Distortion Less than 2% @ 60% deviation
S/N Ratio below 700 MHz Better than 50dB (WB)
Better than 45dB (NB)
S/N Ratio 700-900 MHz Better than 50dB (WB), 45dB (NB)
S/N Ratio above 900 MHz Better than 46dB (WB), 41dB (NB)
Co-Channel Rejection Better than 5dB
RF Switching Bandwidth Equal to band allocation
Receiver Front End BW Equal to band allocation, no retuning
VCO Radiated Emissions Less than 1uV/m @ 3m
Input Load Impedance 50 Ohms nominal (VSWR <2:1)
RF Input Protection No damage at input +20dBm
Antenna Connector N-Type Female
Receiver Type Double Conversion Superheterodyne
IF Frequency 90 MHz first, 455 kHz second70 MHz first for band A345MHz first for band A&B
Load Oscillator Injection Low side above 400 MHzHigh side below 400 MHz
   

 

 

TRANSMITTER
Measured in accordance with TIA/EIA-603 Standards
RF Power Output 1W to 50W variable,
1W to 100W option variable
Frequency Stability 20PPM VHF-Low, 1.5PPM VHF,
1.0 PPM UHF/800 MHz
Audio Response Flat within +1, -3dB across BW
Audio Bandwidth DC to 3400Hz (DC FM input)
300Hz to 3400Hz (VF input)
Modulation Distortion Less than 2% @ 60% deviation
S/N Ratio below 700MHz Better than 50dB (WB), 45dB (NB)
S/N Ratio 700-900MHz Better than 50dB (WB), 44dB (NB)
S/N Ratio above 900MHz Better than 47dB (WB), 41dB (NB)
Spuri and Harmonics More than 100dB below carrier
RF Switching Bandwidth Exciter Same as band allocation
RF Switching Bandwidth PA Same or greater than band allocation
Duty Cycle 100% for 50W and 100W RF output
RF Rise Time 4mS with continuous VCO selected
Typical Supply Current (470MHz) 50W:8.6A, 25W:6.2A, 15W:5A
10W:4.3A, 5W:3.3A, 1W:2.1A
Typical Supply Current for 100W Output 15A
VCO Conducted Emissions Less than -70dBm with TX off
VCO Radiated Emissions Less than 1uV/m @ 3m
Adjacent Channel Power 78dB (WB), 72db (NB)
Transmitter IM Conversion Loss Better than 40dB
Automatic VSWR Foldback Trips at nominal VSWR>3:1
Output Load Impedance 50ohms nominal (VSWR<2:1)
Antenna Connector N-Type Female
 
 

BK Radio

RELM Wireless Corporation - 7100 Technology Drive West Melbourne, FL 32904
1-800-821-2900 / sales@relm.com / info@relm.com / service@relm.com