GENERAL INFORMATION

900 MHz Models

Full band (896-902 MHz) operation.

Only narrow band (12.5 kHz) models are available because the 900 MHz band has always had a 12.5 kHz channel spacing.

High power (30W) and medium power (15W) models available.

1.2.3 FRONT AND REMOTE MOUNTING

High tier models are available in both front- and remote-mount versions, and low tier models were available in a front mount version only. Remote mount versions are intended to be mounted in a remote location up to approximately 17 feet away from the control unit such as the vehicle’s trunk. Front mount versions are intended to be mounted within reach of the operator.

The control unit connects to the remote pigtail cable coming from the back panel of the transceiver. This cable is standard with remote mount models and optional with front mount models. The remote control unit uses the high tier front panel assembly. A Remote Conversion Kit is available for converting a front mount high tier model to remote mounting (see Table 1-3). The transceiver does not have dual-control capa- bility. Therefore, either the front panel or a remote control unit can be used for control, but not both.

1.2.4 NPSPAC MODELS (800 MHZ ONLY)

All 800 MHz 988x transceivers capable of operating on 25 kHz channels meet the stricter specifications established by NPSPAC (National Public Safety Panel Advisory Committee) for public safety frequencies from 821-824 and 866-869 MHz. Since deviation is less on NPSPAC channels, an additional screen is may be displayed by the tuning software with 800 MHz models for setting NPSPAC deviation. Then when a public safety channel is selected, the deviation automatically changes to the level set in this screen.

1.2.5 PROGRAMMING

Transceiver programming is performed using a PC-compatible computer, the E.F. Johnson Remote Programming Interface (RPI), and E.F. Johnson

programming software. Programming is described in separate manuals as described in Section 1.1.1.

1.2.6 TRANSCEIVER ALIGNMENT

Alignment is performed using the standard Personality programming setup and special Radio Tune software. There are only two or three adjustments that are made by physically adjusting a component on the PC board. All other adjustments are set digitally. The desired setting is selected using the computer, and it is then automatically stored in the transceiver memory. If the manual adjustments do not need to be readjusted, transceiver alignment can usually be performed without removing the covers. Alignment is described in separate manuals as described in Section 1.1.1.

1.3 PART NUMBER BREAKDOWN

The breakdown of the part number used to identify this transceiver is shown in Table 1-1.With LTR-Net and Multi-Net models, digits 4-7 of this number are displayed briefly at power up.

Table 1-1 Part Number Breakdown

242 - 9 8 x x -x x x x

 

Band

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Options [1]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B/N = Comp/Data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

= VHF*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C/O = Compander

4

= UHF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D/P = Data Cable

8

= 800 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E/Q = Enc/Comp

9

= 900 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F/T = Enc/Comp/Dat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G/U = Comp/Acsry

 

Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H/V = Horn/Acsry

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

= Low tier, dual BW

 

 

 

 

 

 

 

 

 

 

 

 

I/W = Enc/Comp/

 

 

 

 

 

 

 

 

 

 

 

 

 

2

= Mid tier, dual BW*

 

 

 

 

 

 

 

 

 

 

 

 

 

Acsry Cable

3

= High tier, dual BW

 

 

 

 

 

 

 

 

 

 

 

 

[1] N-W models are

4

= Low tier, 12.5 kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LTR-Net upgradeable

5

= Mid tier, 12.5 kHz*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

= High tier, 12.5 kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

= High tier rem, dual BW

 

 

 

 

 

 

 

 

 

 

 

 

 

Config.

0

= High tier rem, 12.5 kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 =Mid Pwr std

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signaling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 = High Pwr std

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7 = M.P. no acc

2

= LTR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

= SMARTNET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 = H.P. no acc

 

 

 

 

 

 

 

 

 

 

 

 

 

4

= Multi-Net

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

= Smartzone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Freq Range

6

= LTR-Net

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 = Full band (800/

8

= Data LTR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

900 MHz)

9

= Data M-Net

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 = 430-470 MHz

0

= Conv only*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 = 470-512 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* These configurations are currently not available

 

February 2001

1-2

Part No. 001-9800-001