ATU-HP Technical Instruction Manual
Page 2-29
Section 2 Preparation for Use and Installation
Issue 2.0
DGPS Applications
NO
YES
Is variable
matching
transformer near
optimum
position?
YES
NO
ATU-HP
TUNED
Turn transmitter off.
Change taps on T2 to
add resistance as per
Table 2-7. Turn
transmitter on.
Wait for
L TUNING -
NORMAL
and
R
TUNING – NORMAL
LEDs to turn on
(motors stop)
ADDING SERIES RESISTANCE
With transmitter
operating in MSK
mode at desired
power level, note
reflected power on
meter
Is reflected
power
acceptable?
Note T2 tap settings.
Note variable matching
transformer position
(see Figure 2-12)
Figure 2-14a - Flow Diagram – Adding Antenna Series Resistance (DGPS Applications)
Is the
R
TUNING–
MAX LIMIT
LED on?
NO
Turn transmitter
off. Change taps
on T1 to next
higher resistance
ratio as per Table
2-5. Turn
transmitter on.
Repeat para.
2.5, step (x)
YES
