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Step 2 - Replace the LNB
Follow the instructions below to replace the
circular LNB.
a. If a tie-wrap is securing the LNB cables to the
LNB, cut and remove the tie-wrap (see
Figure 3).
b. Using a 7/16" open-end wrench, disconnect
the RF cables from the LNB. Then connect
them to the same connectors on the new LNB
(see Figure 3 and Figure 4).
c. Using a 5/64" hex key, loosen the two hex
screws securing the LNB to the choke feed
(see Figure 4).
NOTE: Some antennas use wing screws instead of
hex screws to secure the LNB to the choke feed.
d. Remove the LNB.
e. Insert the new LNB into the choke feed. Be
sure to fully insert the LNB into the choke
feed to ensure optimal performance.
f. Using a 5/64" hex key, tighten the two hex
screws to secure the LNB to the choke feed
(see Figure 4).
g. Reinstall the radome and restore power to the
TracVision system and any connected
receivers and/or multiswitch.
The procedure is complete!
Figure 3 Conventional LNB/Tie-wrap
RF1
Figure 4 Compact Circular LNB/Choke Feed Screws
Choke Feed
Screw (x2)
RF2
Tie-wrap
RF1
RF2
3
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