1 Transmit frequency band 2670-2690 MHz
2 Receive Frequency band 2500-2520 MHz
3 Antenna polarization LHCP (both transmit and receive)
4 Antenna gain 15.5 dB ( Min.)
5 EIRP of the terminal 18.5 dBW ( Min.)
6 G/T of the terminal Better than -8.4 dB/K
7 Transmit frequency accuracy
(Including stability)
±2.7 Khz ( Max)
8 Phase noise (SSB) of transmit
Carrier
1 KHz Offset <- 70 dBc 10 KHz & Beyond < -80 dBc
9 Harmonics pf the transmit
carrier
Lower than – 40 dB
10 Spurious and noise output in
the transmit carrier
Ess than – 45 dB (discrete components other than signal
spectrum in ±100 KHz band and less than -60 dB of the
transmit carrier in any 4 KHz band out side selected ±100
KHz band
11 Channel Tuning 10 KHz
12 Modulation/Demodulation BPSK
13 Modulation Parameter
Phase imbalance < 3.0 deg
Amplitude imbalance < ±0.2 dB
Error connection Rate ½ with K=7,Convoltion coding viterbi decoding
14 Phase Ambiguity Resolution Differential Encoding/Decoding
15 Scrambling /Descrambling CCITT v.35
16 Data Tx.rate 5,4 Kbps( Voice coding rate 4.8 Kbps)
17 BER Better than 1x106
at Eb/No of 6.0 dB
18 Package A suitable package with carrying case
19 Antenna alignment By signal strength indicator & Magnetic compass
20 Weight of terminal Less than 3.5 Kg.(with carry case & Charger < 4.0 Kg)
21 Power Supply Battery operated with charging option of mains
22 Operating Temp O
0C to + 550
c
23 Humidity 95% at 400
, non condensing
24 Shock & Vibration As per Transportation level
OTHER REQUIRMENTS OF PORTABLE TERMINAL
Mss Type –D portable terminal should support DAMA and PAMA selection. It should support signaling and
communication protocol of ISRO HUB.
Battery Charging from main without removing from terminal.
Battery replacement should be possible from outside without opening main cover. Battery should sustain for
at least 12 Hr. operational ( Receive mode) and talk time should be greater than 3.0 Hr.
Compass should rugged enough to take care of transportation.
Terminal package design be highly reliable for disaster management application.