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This chapter provides an overview of the OM20 Outdoor Modem. The OM20 system can support
a C-Band with power levels of 2, 5 and 10 watts or Ku-Band with output powers of 2, 4 and 8
watts.
Figure 1.1. Outdoor Modem (OM20) without protective shroud
1.0 Overview
Radyne's OM20 outdoor modem is based on Radyne's DMD20/LBST modem product platform.
The Transmit IF output and Receive IF input frequencies of the OM20 are 950 to 2050 MHz.
The modem operates over a data rate range of 2.4 Kbps to 20 Mbps in 1 bps steps including at all
standard IBS and IDR Data rates up to 8.448 Mbps. A full range of Industry Standard Data
Interfaces is available for the OM20. Interface types are selectable from EIA-530 (J3), Ethernet
(J4), optional ITU G.703 (Unbalanced on J10/11, Balanced on J3), and an optional ASI (J10/11).
The OM20 is available with optional feed mounted C or Ku-Band LNB's for the downlink, and
optional feed mounted 2/4/8 Watt Ku-Band or 5/10 Watt C-Band BUC's for the uplink.
MN-OM20– Revision 5
Chapter 1. Introduction
1–1
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