Radiometer Characteristics

 

Analog Receiver
L.O. Frequency range 1370-1800 MHz
L.O. Tuning steps 40 kHz
L.O. Settle time <5 ms
Rejection of LSB image >20 dB
3 dB bandwidth 40 kHz
I.F. Center 40 kHz
6 dB I.F. range 10-70 kHz
Preamp frequency range 1400-1440 MHz
Typical system temperature 150K
Typical L.O. leakage out of preamp -105dBm
Preamp input for dB compression
from out of band signals
-24 dBm
Preamp input for intermodulation interference -30 dBm
Square law detector max. 4000 K a 0 dB attenuation
40,000 K at 10 dB attenuation
Control RS-232 2400 baud


Analog Receiver
Analog Receiver Board



Digital Receiver

L.O. Frequency range 1370-1800 MHz
L.O. Tuning steps 40 kHz
L.O. Settle time <5 ms
Rejection of LSB image >20 dB
Bandwidth/Resolution Modes 1200/8 kHz*
(Currently supported in ver 1.0 firmware) 500/8 kHz
- 250/4 kHz
- 125/2 kHz
I.F. Center 800 kHz
6 dB I.F. range 0.5-3 MHz
Preamp frequency range 1400-1440 MHz
Typical system temperature 150K
Typical L.O. leakage out of preamp -105dBm
Preamp input for dB compression
from out of band signals
-24 dBm
Preamp input for intermodulation interference -30 dBm
Control RS-232 2400 baud
* The 1200 kHz wideband is synthesized using 3 500 kHz bands stitched together from a frequency scan.


Digital Receiver
Digital Receiver Board