Comtech EF Data KST-2000A/B - Manual (Page 16)

Ku- Band Satellite Transceiver Revision 9
Introduction MN/KST2000AB.IOM
1–2
1.1 Description
The KST-2000A/B Ku-Band satellite terminal is a high-performance, full-featured
transceiver designed for outdoor operation. The converter unit controls external High
Power Amplifiers (HPAs). Automatic Gain Control (AGC) from the converter input to
the HPA output assures power output stability over varying conditions for up to 40W
Comtech EF Data Solid-State Power Amplifier (SSPAs).
Note: For TX only application, downlink functions and hardware are not supplied or
available.
1.1.1 Receive Reject Filter
The KST-2000A/B is capable of operating over an uplink frequency of 13.75 to 14.5
GHz. Due to the proximity of the lower end of this band to the upper end of the Ku
receive band, it is possible for the upconverter to radiate noise power in the upper range
of the receive band.
If the transceiver Rx frequency is above 11.9 GHz, Comtech EF Data recommends
installing the supplied Receive Reject Filter (Figure 1-2) on the output of the SSPA for
single-thread systems and the output of the switch on redundant systems.
Figure 1-2. Receive Reject Filter