TM 1-1520-238-10
3-18.12
Change 4
3.7B.12 Loading GPS Time with Single Word of Day
(WOD)
.
NOTE
The EGI must be operational to use GPS
time via the EGI. The time on CDU line 1 of
the ADMIN page cannot have an arrow by it.
The absence of the arrow indicates that it is
GPS time.
The following procedure is used for loading GPS time
from the EGI to the Havequick radio with a single Word of
Day (WOD).
1. Insert Word of Day.
2. Function Selector switch – PRESET.
3. Preset Channel Selector – 20. A single beep
should be heard.
4. Preset Channel Selector – 19 - 15. A single
beep should be heard 19 -16 and double beep at
15.
5. HQ SYNC VAB (on Data page) – Depress and
release.
6. Function Selector switch – Manual.
7. Frequency Selector(s) – A000.0, A000.1,
A000.2, A000.3, OR A000.4.
3.7B.13 Loading GPS Time with Multiple Word of Day
(MWOD)
.
The following procedure is used for loading GPS time
from the EGI to the Havequick radio with a multiple word
of Day (MWOD).
1. Insert Word of Day.
2. Mode Selector switch – MAIN.
3. CHAN switch – Set to 20.
4. Function Selector switch – PRESET.
5. Frequency switches – Set to 220.025 (MWOD
LOAD).
6. PRESET button – lift preset frequency label cov-
er and push PRESET button. Listen for single
beep.
7. Function Selector switch – Manual.
8. CHAN switch – Set to 01.
9. Frequency switches – Set to applicable day of
month code. Code format is XAB.XXX, where A
and B are the day of the month the WOD is
used. X can represent any value. For example, if
today is 26 June, enter X26.XXX.
10. TONE button – Press TONE and release. Listen
for a wavering tone.
11. Function Selector switch – PRESET.
12. CHAN switch – Set to 20.
13. Frequency switches – Set to 220.000 (Verify/
Operate).
14. PRESET button – lift preset frequency label cov-
er and push PRESET button. Listen for single
beep. Radio is now ready to receive TOD either
via GPS or conventional means.
15. HQ SYNC VAB (on Data page) – Depress and
release.
16. Function Selector switch – Manual.
17. Active Net – Select.
The TONE button can be pressed to verify radio has ac-
cepted GPS time, but time will be transmitted on tuned fre-
quency. If the radio does not accept GPS time, verify the
EGI is operational and the time on the ADMIN page is
GPS time (i.e. no arrow by the time).
