CHART 4-4. SINAD Test Failure Troubleshooting A2000, A3000 Assemblies (Sheet 4 of 9)

TM 11-5820-401-34-3/0967-LP-432-3060

4-13. TROUBLESHOOTING FLOW CHARTS. (CONT)

CHART 4-4

SINAD Test Failure Troubleshooting A2000, A3000 Assemblies

(Sheet 4 of 9)

TABLE A

AN/IGRM-114A

R-442/VRC

FREQUENCY

IN MHz

CRYSTAL

IN MHz

046950.0

Y2007

XX.05 OR XX.10

Y2008

047050.0

XX.15 OR XX.20

047150.0

Y2009

XX.25 OR XX.30

Y2010

047250.0

XX.35 OR XX.40

Y2005

047350.0

XX.45 OR XX.50

Y2004

047450.0

XX.55 OR XX.60

Y2003

XX.65 OR XX.70

047550.0

Y2002

XX.75 OR XX.80

047650.0

Y2001

XX.85 OR XX.90

047750.0

Y2006

XX.95 OR XX.00

046850.0

X = ANY SETTING

NOTES

1. Leave 10-dB attenuator attached to AN/GRM-

114A ANTENNA input, but do not reconnect

BNC cable.

2. See Sh 9.

3. At 14-MHz center frequencv. wave peaks at

10 MHz, 11 MHz, and 12 MHz should beat

least -40 db. Peaks should fall off at 13 MHz

and above. By 16 MHz or 17 MHz they should

he appox 80 db.

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