SatLink VSAT User Guide
Publication no. 101557
Copyright © 2009 – STM Group, Inc.
Page 136 (160)
G.1 Mounting the feed horn interface adapter on the STM SatLink 403x
Antenna feeds with the option B hole patterns will require use of adapter kit STM SatLink 4901 (STM
P/N 107268) for interfacing the STM SatLink 403x. Use the following procedure:
1) Insert the rubber gaskets supplied with the adapter on both sides of the adapter.
2) Use the 4 UNC screws to fasten the adapter to the STM SatLink 403x flange as shown in Figure 55.
3) Fasten the STM SatLink 403x to the antenna feed horn as shown in Figure 56.
Figure 55: Mounting of adapter STM SatLink
4901 (STM P/N 107268) on STM SatLink 403x.
Remember to fit rubber gasket on both sides of
the adapter to prevent moisture intrusion.
Fasten the adapter using 4 UNC screws supplied
with the STM SatLink 403x. Hand tighten with
Allen key.
Figure 56: Mount the antenna feed to the
adapter and fasten using M4 screws.
G.2 Upgrading Existing VSAT installations
When upgrading an existing VSAT site from a configuration with an antenna listed in Table 9 to a DVB-
RCS site configured with the STM SatLink 403x transceiver, the antenna will normally be configured
with a feed horn with the option B hole pattern (Figure 54) and an OMT. In order to fit the STM SatLink
403x to the antenna from the VSAT installation, do the following:
1. Remove the OMT. This part is not used when installing the STM SatLink 403x transceiver.
2. Use the adaptor STM SatLink 4901 (STM P/N 107268) to interface the STM SatLink 403x to a feed
horn with interface C120 / 4 screws as shown in Figure 55 and Figure 56,
Alternatively, feed horns (Andrew P/N 61-00233-01) with interface option A for Andrew 96 cm and
1.2 m antennas can be ordered separately.
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