Atlas PT Technical Manual
8
Frequency:
Model RV-PT-VB .............................................................................................. 150-174MHz
Size (without antenna) ......................................................................................................
5.45” X 2.62’ X 1.23’
Weight (radio)
.............................................................................................................. .15 ounces (0.43kg)
Weight (external battery pack)… ........................................................................................ 8.5 ounces (0.25kg)
Radio current draw, receiving, over-the-air rates ................................................................................... <90mA
Current draw when transmitting data ........................................................ <2.3A typical, 1.2A typical at 2watts
............................................................................................................. <2.5A max at 5watts
Low Power Mode standby current (Transponder in-between timed transmissions ) ............................. <25mA
Sleep/Chirp Mode standby current ........................................................................................................... <1mA
Frequency stability .............................................................................................................................. ±1.5ppm
Narrow-band Over-the-air baud rates ........................................................................................................ 9600
Internal data buffers (transmit and receive) .................................................................................... >2000 bytes
Operating temperature range ..................................................................................................... -23ºC to +50ºC
Storage temperature range .......................................................................................................... 0ºC to +35ºC
Power on time to operational ...................................................................................................................... <1S
3.2
Transmitter
RF power output (programmable) .................................................................................................... ½ - 5 watts
Note: RF power output will vary from 3-5 watts at full power, depending upon battery voltage
Maximum duty cycle ................................................................................................................................... 10%
Maximum transmit frequency deviation ................................................................ ± 2.2kHz (12.5kHz channels)
Occupied bandwidth ................................................................................................ 11 kHz (12.5kHz channels)
TX spurious outputs ............................................................................................................................ < -70dBc
Emissions designator .......................................................................................... 11K0F1D (12.5kHz channels)
3.3
Receiver
Typical RX sensitivity (1% BER)
9600bps, 4-level, 12.5kHz channel ......................................................................... -105dBm
RX selectivity
......................................................................................... -50dB (12.5kHz channel spacing)
Spurious and image rejection ................................................................................................................... -75dB
RX intermodulation rejection .................................................................................................................... -70dB
Conducted spurious emissions ........................................................................................................... <-53dBm
3.4
Batteries and Charger
DC input voltage .............................................................................................................................. 9-15V DC
Current draw when charging (internal or external) battery .......................................................................... <2A
Internal Battery Capacity .................................................................................................................... 2200mAh
Capacity at 0C
...................................................................................................................................... 80%
Capacity at -20C ...................................................................................................................................... 50%
Charge/discharge cycles for >70% capacity ................................................................................................ 500
Charge time (90%) ...............................................................................................................................<3 hours
Self-discharge rate .............................................................................................................................. <400uA
Maximum time between charges ......................................................................................................... 2 months
3.5
User Input and Output Signals
Serial port baud rates .............................................. 1200, 2400, 4800, 9600, 19200, 38400, 57600*, 115200*
Voltage levels
....................................................................................................... RS-232 complaint levels
RS232 handshake signals ......................................................................................................................... none
Transceiver RF ......................................................................................................................... 50 ohm TNC
GPS Antenna
.............................................................................................................. Amplified Geo-Helix
Power Connector ........................................................................................................... LEMO B-Series 5-Pin
External Battery Port ............................................................................................ Sealed pogo spring contacts
* only with ATCM setting disabled
