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OPERATIONAL CHECK. Continued - TM-11-5820-890-30-5_57
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TM-11-5820-890-30-5 Ground Non-Icom Radio Sets Consisting of: Receiver-Transmitter Radio RT-1439/VRC (NSN 5896-01-195-0827) Manual
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OPERATIONAL CHECK. Continued - TM-11-5820-890-30-5_59


TM 11-5820-890-30-5 2-29. OPERATIONAL CHECK.  Continued Step 6. RF OUTPUT CHECK.  Continued Action Response j. Set   frequency   counter   to   500   load. j. Frequency  counter  reads: Set  CHAN  switch  to  each  position. CHAN FREQUENCY   (Hz) Read  frequency  counter. MAN 29999850   to   30000150 1 37874800   to   37875200 2 42974800   to   42975200 NOTE: 3 43374800   to   43375200 4 49074750   to   49075250 If  reading  is  incorrect,  set  FCTN  GEN 5 56199700   to   56200300 LEVEL  to  minimum  and  read  frequency 6 68774650   to   68775350 counter  again. CUE 87974550   to   87975450 If  any  channel  is  incorrect,  go  to chart   15   at   node            on   sheet   4. k.   Set   PTT:   OFF. Return  frequency  counter  to  1  M  W load. k.   No   response. Step 7. SIDETONE CHECK. Action Response a. Set  UUT  RT:  RF:  HI. a. No  response. Disconnect  RF  test  cable  at  test  adapter UUT ANT connector. Set   RF   SWITCH:   1. b.   Set   PTT:   UUT. b.   Sidetone   should   not   be   present.   If   it   is, Press  handset  PTT  switch  and  check  for go  to  chart  19. sidetone. c. Reconnect  RF  cable  to  maintenance c. No  response. group  UUT  ANT  connector. d.  Press  handset  PTT  switch  and  check  for d.   Sidetone   should   be   present.   If   it   is   not, sidetone. go  to  chart  20. e. Set   PTT:   OFF. e. No  response. Step 8. SQUELCH CHECK. Action Response a. Set  UUT  RT:  FCTN:  SQ  OFF. a. Rushing  noise  is  present  in  handset.  If Listen  to  handset. not,  go  to  chart  21. b.  Adjust  VOL  control. b.   Volume   in   handset   varies.   If   not,   go   to chart  8.  Also,  see  figure  FO-7. c.   Set   UUT   RT:   FCTN:   SQ   ON. c. Rushing  noise  is  not  present  in  handset. Listen  to  handset. If  it  is  present,  go  to  chart  22. 2-37


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