Shift frequency repeater makes the received S wave band signals between 2.5GHz and 2.7GHz down-convert to 470~860MHz U wave band radio frequency signal and then transmitted by the antenna. It??s an equipment can do networking, interpolation and expand the coverage range of the transmission network. In order to overcome shared frequency interference in the site and across the sites , especially when in the relay station transmitting in sector or all-direction, we have to the use of shift frequency repeater to transmit signals. The equipment also adapts to DVB-C, DVB-S, DVB-T (H), DMB-T, ADTB-T, and other international and domestic standard terrestrial digital microwave transmission and coverage systems.
equipment characteristics ??Output power does not change with the input level ??Wide AGC control range ??Output power instruction ??Receiving Level instruction ??Low noise amplifier supplied by power amplifier, does not need a separate power supply ??High linearity and transmission quality ??Modular design ??Convenient installation, commissioning and maintenance ??Largeacreage radiator ,natural cooling, without fan(within 50W) ??Few easily damaged parts and high reliability
Main technical data
input frequency
2500 MHz-2700MHz
output frequency
any 200MHz frequency band between 470MHz and 860MHz
LO frequency stability
1x10-5
LO phase noise
-100dBc/Hz
Total gain
95dB-105dB
noise coefficient
2.5dB(not include input filter)
input level
-5dBm-65dBm(range)
Output digit average power
0.5 W -20W
third-order inter-modulation
-50dBc measured at the point of output digit average power
Shift frequency repeater makes the received S wave band signals between 2.5GHz and 2.7GHz down-convert to 470~860MHz U wave band radio frequency signal and then transmitted by the antenna. It??s an equipment can do networking, interpolation and expand the coverage range of the transmission network. In order to overcome shared frequency interference in the site and across the sites , especially when in the relay station transmitting in sector or all-direction, we have to the use of shift frequency repeater to transmit signals.