INTRODUCTION
The M-PA radio is a high quality microprocessor con- trolled synthesized portable FM radio. M-PA operation is highlighted by the radio’s programming versatility. This al- lows tailored operation of the portable radio to meet the needs of the radio system and the individual users. Three (3) different M-PA radio models are available: Select, Scan and System.
The M-PA Select model radio is the basic version that can be programmed with up to sixteen (16) channels. This unit features an 8-digit alphanumeric liquid crystal display (LCD) and a 16-position knob for channel selection. The display is backlit for nighttime and low-level ambient light operation.
Scan and System model radios have an LCD similar to the Select model radio. A keypad is added to these radios (4- button on Scan model, 16-button on System model) to pro- vide additional features not available on the Select model radio. These radios can be programmed with up to 192 dif- ferent radio channels. Both also provide scan capability in- cluding dual-priority scan, and DTMF telephone interconnect of up to ten (10) preprogrammed numbers. The telephone numbers can be recalled at will and initiated. The System model’s numeric keypad allows editing of the ten preprogrammed numbers and manual DTMF telephone in- ter-connect dialing.
FEATURES
∙192-Channel Capability - Scan and System models radios can be programmed with up to 192 channels accessed in 12 modes (banks of channels) with 16 channels in each mode or 16 modes with 12 channels in each mode. The Select model radio can be programmed with a maximum of 16 channels.
∙Backlit Liquid Crystal Display - The 8-digit
alphanumeric LCD provides programmable customization and feedback to the operator of various
operating conditions. Status flags located above and below the digits alert the operator to various radio conditions such as channel busy, transmitter in operation, or a low battery condition. Scan and System model radios have additional status flags for scan operation. LCD backlighting can be enabled or disabled on a per channel basis.
∙Rotary Control Knob - On Scan and System model radios, the 16-position top-mounted Control Knob allows easy selection of modes (banks of channels), channels or Channel Guard (CG) according to how the radio is programmed. On the Select model radio, the Control Knob selects the operating channel. A stop-plate may be installed under the knob to limit the
maximum number of positions to less than sixteen (16). It is normally factory installed for fifteen (15) positions.
∙Volume Control Knob - This rotatable control provides quick and easy adjustments to the volume level. Minimum volume levels can be programmed into the unit. This feature prevents missed calls due to a low volume setting.
∙Monitor Button - This side-mounted button is used to disabled squelch and if programmed for the selected channel, it is used to toggle CG and/or T99 operation on and off.
∙Keypad - The Scan model radio has a 4-button keypad on its front panel that provides scan and menu control. The menus allow selection of the current operating mode (bank of channels) and/or channel depending upon the radio’s programming. The menus also allow control of various other radio features such as selection of stored telephone interconnect numbers for auto-dial operation, and alert tone enable/disable control. A System model radio has a 16-button keypad. The top four (4) buttons are identical to the Scan model keypad, providing scan and menu control. The lower twelve (12) buttons form a numeric keypad that allows manual DTMF telephone interconnect dialing and editing of telephone interconnect numbers stored in the radio. Select model radios do not have a keypad.
∙Scan Capability - Scan and System model radios can be programmed for non-priority scan or dual-priority scan operation. Scan programming options include a keypad entered scan list or a fixed scan list. Priority scan programming options include a fixed priority-one channel or the selected channel as the priority-one channel. The radio can be programmed to scan only the channels in the current mode (bank of channels) or it may be programmed to scan across modes. The Select model radio does not support scan operation.
∙Telephone Interconnect Capability - The Scan and System model radios can store up to ten (10) telephone interconnect numbers for auto-dial operation. These numbers are preprogrammed into the Scan model radio. In the System model radio, the numbers can be preprogrammed, operator-entered and/or edited via the numeric keypad. The System model’s numeric keypad also allows manual DTMF tele phone interconnect dialing. The Select model radio cannot initiate telephone interconnect calls.
