EA4TX – ARS-USB Manual – June. 2024 Page 7
1.2 Connector J2: Elevation Relay connections
In addition to the 3 azimuth relays (see note), the ARS-USB Board includes 2 relays
for elevation control if an elevation rotor is present.
Relay OFF Relay ON
UP J2-2 to J2-1 J2-2 to J2-3
Down J2-5 to J1-4 J2-5 to J2-6
The extra second circuit is also available:
Relay OFF Relay ON
UP 2’ - 1’ 2´- 3´
5´ - 4´ 5´ - 6´
Note: those 2 Elevation relays are only mounted when ordering the ARS-USB for Azimuth &
Elevation.
Up relay Down relay
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