Frequency synthesizer KRUB.467875.002
            Application: the synthesizer of frequencies is designed
to work as integral part of mobile digital tropospheric station of small capacity in quality
of LO of two-channel receiver or transmitter, and also in quality of LO of auxiliary frequency
converters for the autocontrol of receiving and transmitting channels.
            Frequency sequencer forms coherent signals that differ
in the high spectrum purity degree and low level of the phase noises. FS synchronize from
reference frequency 10 MHz generator. Than FS extended aging distantly from operating device
and gives acknowledgement of the extended aging.
There is an ability to indicate sequenced frequencies and control operation with the help
of digital indicator and control luminodiodes on the right side of FS.
            FS saves installed operating modes after interruptions
in the power supply. FS is intended for using in such conditions:
            - ambient temperature, - 25°С...+ 60°С;
            - maximum ambient temperature +70°С;
            - decreased atmospheric pressure 460 mm Hg.;
            - increased air humidity (95±3)% at 35°С temperature.
Technical characteristics
| Frequency range, MHz | 4330 … 5070 |
| Frequency step, MHz | 1 |
Output power On the main inputs, dBm On auxiliary outputs, dBm | (+12±2) (+10±3) |
Spectral density of phase noise power at offset from carrier: 0,1 kHz, dB/Hz, no more 1,0 kHz, dB/Hz, no more 10 kHz, dB/Hz, no more 100 kHz, dB/Hz, no more (70±6) MHz, dB/Hz, no more | -65 -75 - 85 -100 -140 |
Relative level of collateral fluctuations in frequency ranges: 4250 <f< 5150 MHz, dBm, no more 2500 <f< 4250 MHz, dBm, no more 2200 <f< 2500 MHz, dBm, no more 1000 <f< 2200 MHz, dBm, no more 100 <f< 1000 MHz, dBm, no more 0 <f< 100 MHz, dBm, no more 5150 <f< 15000 MHz, dBm, no more harmonics (2,3), dBm, no more | -80 -70 -80 -70 -90 -110 -70 -30 |
| Mutual outputs isolation, dB, no less | 40 |
| VSWR of output frequencies 4250 … 5150 MHz, no more | 1,3 |
| VSWR of 10 MHz input, no more | 2 |
| Readines time, minutes, no more | 10 |
| Voltage, V | +24 … +30 |
| Average time between failures, hours, no less | 20000 |
| Overall dimensions, mm | 420,5х199х99 |
| Weight, kg, no more | 10 |
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