NASA SX 35 DSC - Manual (Page 54)

52 SX 35 DSC
TRANSMITTER
Power Output: 25 Watts or 1 Watt switchable.
Tx Current: 6 Amps @ 25W Tx.
1 Amp @ 1W Tx.
Modulation: G3E for Voice, G3B for DSC Data.
Transmit Frequencies: 156.025Mhz - 157.425Mhz @ 25Khz spacing.
Spurious/Harmonic Emissions: Less than 0.25
µ
W.
Modulation Distortion: Less than 4% @ 1Khz for +/-3Khz devia-
tion.
Modulation Limiter: +/-5Khz deviation with 100% modulation.
Frequency Response: Matches +6dB/Octave slope within
+1/-3dB from 300 to 2500Hz.
18dB/Octave beyond 3000Hz. Audio Low
Pass Filter is included.
Hum & Noise: Less than -40dB.
RECEIVER
Receive Frequencies: 156.025Mhz - 162.025Mhz @ 25Khz spacing.
Sensitivity: 0.5
µ
V or less for 20dB SINAD
Squelch Range: 0.25
µ
V to 0.80
µ
V @ full squelch
Audio Output Power: 3.0W minimum @ 4 Ohms with less than
10% distortion.
External speaker: Internal speaker is Off when external
speaker is On.
Receiver Current: 200mA in Standby ( 2 receivers)
Modulation Acceptance: +/-7 kHz minimum.
Adjacent Channel Selectivity: Greater than -70dB for +/-25Khz.
Image Rejection: Greater than -70dB.
Intermodulation Spurious
Response: Greater than -70dB.
Noise Level: Greater than -40dB unsquelched.
Audio Frequency Response: Matches -6dB/Octave slope within
+1/-3dB from 300 to 2500Hz, 18dB/Octave
over 3000Hz.