P/N 95L-8001-00 (September 2017)
Q/Z-1250 Power Trimaran
User’s Guide
Page 22
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Antenna Safety
Antenna problems are the most likely cause of Q/Z-1250 control issues or poor data transmission range. It
is critical to ALWAYS check the antenna bulkhead connections before deployment. Ensure the antenna
pins are properly interfaced with the bulkhead connector and check that the antenna cables are connected
and tightly fastened. It is not good enough that the antenna is screwed in – the center pin needs to make a
good connection between the antenna and the cable / bulkhead. ALWAYS make sure the external anten-
nae are tightly installed –they could vibrate loose while the boat is in action.
Check all antenna connections before deployment.
Range Testing
Before each deployment, it is good practice to conduct a range test, where the boat is kept stationary and
the operator moves away to check that good control of the boat navigation is maintained as the distance
increases. Select a control position so the user can move closer to the boat in an emergency. For example,
do not set up at the shoreline where the operator cannot move closer to the boat if a control issue arises.
Setting up the RC controller 50 feet back from the bank affords the operator 50 feet of “reserve” range.
Always conduct a range test before deployment.
Antenna Position
The two antennae aft of the battery compartment are for the remote control system. The black stub anten-
nae should be positioned at a 90-degree angle to maximize signal strength. Both antennae should NOT be
pointed vertically upwards. The worst orientation is both antennae flat and horizontal; this should
ALWAYS be avoided. Teledyne Oceanscience recommends the following antenna orientation:
Figure 15.
Antenna Position
Position one antenna UP and one antenna rotated 90 DEGREES outboard to maximize the
signal strength with the RC transmitter antenna (see Figure 16).
If using the optional Power/Telemetry module, its antenna should be oriented vertically.
