TM 1-1520-238-10
Change 4
3-18.11
3.7B.9 MWOD Erase.
1. CHAN switch – Set to channel 20.
2. Function Selector switch – PRESET.
3. Frequency switches – Set to 220.050.
4. LOAD button – Lift preset frequency label cover
and push LOAD button.
5. Function Selector switch – MNL.
6. T–TONE switch – Toggle to TONE and release.
MWODs should now be erased.
7. Function Selector switch – PRESET.
8. Frequency switches – Set to 220.000.
9. LOAD button – Lift preset frequency label cover
and push LOAD button. Close cover. The radio
is now in the Verify/Operate mode/
3.7B.10 Alternate MWOD Erase.
1. Preset Frequency Label Cover – Open to reveal
ZERO switch.
2. ZERO switch – Rotate counterclockwise, then
return to normal position. ERASE should be dis-
played on the frequency/status indicator. All
MWODs are now erased.
3.7B.11 Receiving Time of Day (TOD) and TOD Up-
date
/
.
NOTE
A steady warning tone will be heard when
the anti–jamming mode is selected and the
TOD or a valid WOD has not been entered.
A pulsating tone will be heard if an invalid
net is selected.
1. Function Selector switch – PRESET or MNL.
2. T–TONE switch – Toggle to T and release.
3. TOD – Request from another station.
NOTE
If TOD is being automatically beaconed
from another station, the first TOD message
received within one minute of selected T
position will be accepted.
a. TOD Send.
1. Function Selector switch – PRESET or MNL.
Rotate frequency switches or CHAN switch to a
predesignated frequency for TOD transmission.
2. T–TONE switch – Toggle to TONE position for
two seconds and release.
3. Loading Operational Date.
4. CHAN switch – Set to Channel 20.
5. Function Selector switch – PRESET.
6. Frequency switches – Set to 220.025.
7. LOAD button – Lift preset frequency label cover
and push LOAD button.
8. CHAN switch – Set to Channel 01.
9. Frequency switches – Set to the operational
date in the format of XAB.XXX, where A and B
are the day of the month of the Date Tag. X can
be any value.
10. T–TONE switch – Toggle to TONE and release.
Listen for a wavering tone.
11. Function Selector switch – PRESET.
12. CHAN switch – Set to Channel 20.
13. Frequency switches – Set to 220.000.
14. LOAD button – Lift preset frequency label cover
and push LOAD button. Listen for a single beep.
b. Clock Start.
Press TEST DISPLAY switch while simultaneously press-
ing the T–TONE switch to the T position. To check if TOD
is loaded, press the T–TONE switch to the TONE position
for two seconds; two tones should be heard.
