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TM 11-5821-333-12
6-13. OPERATIONAL CHECK. Continued
ACTION
RESPONSE
Step 6. SC VOICE COMMUNICATIONS TEST.
a. Set switches as follows:
PRESET
MAN
MODE
SC
FUNCTION
SQ ON
b. Set IFM RF PWR switch to NORM if IFM power
amplifier present and to OFF if not present.
c. Press push-to-talk; speak into headset; and
listen for sidetone.
d. Call other station. Listen for response from
other station.
e. Repeat c and d for presets 1 through CUE.
a. No response.
b. No response.
c. Sidetone present. If not, go to chart 10
(page 6-23).
Sidetone clear and intelligible. If not, go to
chart 11 (page 6-26).
d. Station responds. Response is clear and in-
telligible. If not, go to chart 12 (page 6-28).
e. Sidetone present on all switch presets. Clear
and intelligible response on all switch pre-
sets, If not, RT is bad.
Step 7. DRA DATA COMMUNICATIONS TEST.
a. If DRA and analog data equipment not pres-
a. No response.
ent, skip this test.
b. Set switches as follows:
b. No response.
PRESET
MAN
MODE
SC
FUNCTION
SQ ON
IFM RF PWR
OFF
c. Send analog data to other station and request
analog data from other station.
Step 8. FH FILL TEST.
a. For ICOM radios, go to step c.
b. For Non-lCOM radios, set FUNCTION switch to
LD-V, and load TRANSEC variable.
c. Set FUNCTION switch to LD. Load hopset and
FH sync time.
c. Data received. If not, go to chart 13
(page 6-29).
a. No response.
b. Load successful. If not, go to chart 14
(page 6-30),
c. Load successful. If not, go to chart 14
(page 6-30).
6-7
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