Codan Radio MT-3 - Manual (Page 15)

MT-3 ANALOG RADIO SYSTEMS | USER GUIDE
Chapter 2: Technical Information Page 7
CHAPTER 2: TECHNICAL INFORMATION
WIDE OR NARROWBAND OPERATION
VHF and UHF receivers and transmitters were available in both wideband (25 KHz) and narrowband
(12.5 KHz) bandwidths. Receiver modules that have been ordered as wideband can be converted
to narrowband using a narrowband modifi cation kit. The conversion from wideband to narrowband
requires replacing crystal fi lters, shields and a number of surface mount components. Transmitter
modules can be converted to narrowband by re-tuning deviation levels and typically component
replacement is not required. It is usually recommended that the transmitter and receiver modules be
returned to the factory for this conversion.
MT-3 SOFTWARE
MT-3 radio equipment does not use any software programming. Frequency selection, level adjustments,
bandwidths, power outputs, etc. are all hardware programmable through variable resistors, capacitors,
inductors, switches, and in some cases, parts selection.