Changing Transmitter Frequency Band
Switch between Up and Down bands during pre-bore calibration
or mid-bore to overcome interference. See next page to change
bands on the receiver.
Both optimized bands remain stored on both the receiver and
transmitter even after a power cycle.
Above Ground – Power-On Method
Insert transmitter (Tx) batteries with the Tx pointing down
(battery compartment on top, shown at right) to power on in the
Down band. Insert batteries with the Tx pointing up to power on
in the Up band.
Above Ground – Tilt Method
Let Tx sit powered on at level (0±10°) for at least five
seconds (sec.), tilt Tx up at approx. +65° (almost vertical) for 10–
18 sec., then return to level for 10–18 sec., maintaining ±2 clock
position (CP) during this sequence. When the Tx changes bands,
data disappears from the receiver.
Below Ground (Mid-Bore) – 10/2/7 Roll Method
Disable Roll Offset (if enabled). Roll the Tx clockwise (CW) to a CP of 10±1
and wait 10–18 sec., slowly roll CW to CP 2±1 and wait 10–18 sec., and
slowly roll CW to CP 7±1. The Tx changes bands within 20 seconds and
data disappears from the receiver. Re-enable Roll Offset if applicable.
Below Ground (Mid-Bore) – RRS Roll Method
Remain at any CP for at least 40 seconds to clear timers. Complete one full
CW rotation (±2 CP) within 1–30 sec., wait 10-18 sec., and repeat twice for
a total of three rotations (RRS3). Tx changes frequency band within 60
sec.
Changing Receiver Frequency Band
If you change bands on your transmitter, you must also do so on your
receiver. At the Locate screen, hold the toggle right briefly to open the
Band Selection window. Select the Up or Down band, then select to
return to the Locate screen, where data should begin displaying as
transmission resumes in the new band.
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