IF AMPLIFIERS
KRUB 468714.027 KRUB 468714.027-01
IF amplifiers are intended for using in receivers of digital radiorelay stations with 70 MHz IF. The functions of IF amplifier are the following:
- regulation of signal amplification in the automatic gain control regime or in the manual control regime;
- forming of the amplitude-frequency response of receiving path;
- forming of "IF level" signal;
IF amplifiers can operate in the following conditions:
- ambient temperature: from minus 40 up to +55 °С;
- relative air humidity: no more 95% at 35 °С;
- low pressure: up to 460 mm. Hg.
IF amplifiers are identical, but they are differed by quantity of the outputs.
SPECIFICATION
| Operating frequency range at minus 3dB level, MHz, no more | 30 |
| Maximal gain, dB, no less | 60 |
| Gain ripple in 70±12MHz frequency range, dB, no more | 0,4 |
| Output power in AGC regime, mW | 1±0,25 |
| Permissible level of input signal, mW, no more | 1 |
| Automatic gain control level, dB, no less | 55 |
| Noise figure, dB, no more | 12 |
| Selectivity at of ±25MHz, dB, no less | 30 |
| 3rd intermodulation distortion measured according to 2 tone test in full AGC range, dB, no more | 30 |
| VSWR of “70 MHz input, no more | 1,35 |
| VSWR of “OUTPUT1” and of “OUTPUT2”, no more | 1,2 |
“LEVEL IF” supervisory voltage, V
Рin=-55 dBm
Рin=-30 dBm
Рin=-10 dBm |
10,5±0,5
6±1
2±1 |
| Supply voltage, V | 15±0,5 |
| Consumption current, mA, no more | 120 |
| Dimensions, mm | 118х53х23 |
| Weight, g | 170 |
|
TM
