3
rd
Generation Compact RDMS
TM
Telemetry Receiver
7
Quasonix, Inc.
2 Specifications
Characteristic
Specification
Receiver Section
Type
Dual-conversion superheterodyne
Input RF Frequency
Refer to Table 2
Tuning resolution
Tunes in 62.5 kHz increments, to the 70 MHz IF output, after the 70
MHz IF output, receiver tunes in increments of less than 1 Hz
Frequency stability
1 ppm over temperature
1 ppm per year aging
Reference oscillator
20 MHz
Noise figure
3.5 dB (typical), 5 dB (maximum)
LO phase noise, measured at 70 MHz IF output
-115 dBc/Hz @ 1 MHz offset
Maximum RF input
+20 dBm (+10 dBm for C-band)
Available gain (to 70 MHz IF output)
114 dB
Gain control
128 dB control range; User selectable: AGC or MGC (AGC freeze)
AGC time constant
Adjustable, 0.1 ms to 1000 ms
First IF bandwidth
60 MHz (nominal)
IF rejection
> 90 dB
Image rejection
70 dB
RF input impedance
50 ohms
Second IF Section
IF frequency
70 MHz
IF output level
-10 to -20 dBm nominal (AGC mode)
IF output impedance
50 ohms
IF bandwidths
250 kHz, 500 kHz, 1 MHz, 2 MHz, 4.5 MHz, 10 MHz, 20 MHz, 40 MHz.
Automatic selection based on data rate, with manual override
Optional: 70 kHz, 1.4 MHz, 3 MHz, 6 MHz, 14 MHz, 28 MHz
