JF1/---
JF2/----
JF3/----
LS1/----
LS2/----
LS3/----
LS4/--
LS5/----
MA1/----
MA 2/---
MA 3/----
MC1/---
MC2/--
MC3/--
MC4/---
MC5/----
MC6/----
MC? / ----
MDl/----
MD2/----
MD3/----
MD4/----
MDS/----
ME1/----
ME2/----
ME3/----
ME4/----
MES/----
ME6/----
ME7/----
ME8/----
ME9/----
ME1 0/--
ME11/--
ME12/---
ME13/--
ME14/--
ME1S/---
ME16/---
ME1?/--
ME18/-
V111
JF JACKFIELDS
Miscellaneous (Restricted)
Audio Frequency
Coaxial
LS LOUDSPEAKER ASSEMBLIES
Miscellaneous (Restricted)
Unmounted
Outside Broadcast
Office (use LS1)
Monitoring (previously Studio)
MA MATRICES
Miscellaneous (code by function)
Switching (use SE)
Combining (code by function)
MC MICROPHONES
Ancillary Apparatus (discontinued)
Bidirectional (discontinued)
Cardioid (discontinued)
Lapel (discontinued)
Lip (discontinued)
Omnidirectional (discontinued)
Variable Directivity (discontinued)
MD MODULATORS
Miscellaneous (Restricted)
Amplitude
Frequency
Phase
Modem
ME MEASURING EQUIPMENT
Miscellaneous (Restricted)
Audio (previously Admittance)
Video (previously Calibration)
Digital (previously Current)
Delay
Frequency (also Period)
Impedance (also Return Loss)
Noise (previously Modulation)
MUlti-purpose (never used)
Phase (use ME5)
Photo-electric (use ME)
Peak Programme
Resista~2Ce (never used)
Temperature (never used)
Transmitter/Receiver (previously Test)
Standard Level (for calibration of test equipment)
Voltage (never used)
Waveform (never used)

8