TM 11-5820-890-30-4 Section I. ABBREVIATIONS. Continued Abbreviation DES DET DGT DGTL DIA DIG DIV DMA DMM ON DOD DR DRA DS DSPL DSQ DVM EA ECCM EIR EMP EN ENBL EQPT Er ERF ESD ESD ETM EXT F F FCTN FCTN GEN FET FH FH/M FL FLEX FLT FM Fr FR FREQ E-2 Description Designator Detector Digital Digital Diameter Digital Division Direct  memory  access Digital   multimeter Down Department  of  Defense Discrepancy  reports Data  rate  adapter Direct  support Display Digital squelch Digital  voltmeter Each Electronic  Counter- Countermeasures Equipment   Improvement Recommendations Electromagnetic   pulse Enable Enable Equipment Error ECCM remote fill Electrostatic   discharge Electrostatic  sensitive  device Elapsed  time  meter External Fahrenheit Failure Function Function  generator Field-effect   transistor Frequency  hopping Frequency   hopping/master Filter Flexible Fault Frequency  modulation Failed response Fill routing Frequency Abbreviation Description FREQ  CNTR Frequency  counter FSCM FSK G Gd GEN GND GRN HCP HEX HF HI HLDG HMOS HNDST HPF HUB Hz I/A ICM ICOM ICS ID I/D IF ILLUS IN IN IND INFO INHB INIT INOP INP INT I/O J KB/S KEK kg kHz L LCL LD LD-V Federal  supply  code  for manufacturers Frequency  shift  keying Gate  (electron  device) Good Generator Ground Green Hardness  critical  process Hexagonal High  frequency High Holding Horizontal  MOS Handset High pass filter Hold  up  battery Hertz In  accordance  with Intercom Integrated  COMSEC Intercommunications   System Identification Integrate  and  dump Intermediate   frequency Illustration Inch Input Indicate Information Inhibit Initiate Inoperative input internal Input/output Jack Kilobit  per  second Key encryption key Kilogram Kilohertz Low Local Load Load-variable