Service manual

1-1
April 2001
Part No. 001-9800-203
GENERAL INFORMATION
SECTION 1 GENERAL INFORMATION
1.1 SCOPE OF MANUAL
This service manual contains installation, opera-
tion, programming, alignment, and service information
for E.F. Johnson LTR
®
984x UHF, 988x 800 MHz,
and 989x 900 MHz transceivers. Information is
included for low and high tier versions of these trans-
ceivers, and also for both UHF frequency bands (430-
470 and 470-512 MHz).
This manual replaces Part No. 001-9800-200 and
the -201/-202 revisions, and Part No.s 001-9880-200
and 001-9840-203. However, the -9800- manuals do
not cover discontinued mid tier models or early unre-
vised boards, so you may want to retain your copies of
the -9880- or -9840- manuals for that information.
In addition, this manual does not cover opera-
tion, programming, and alignment of LTR-Net
™
,
SMARTNET
™
, or SmartZone
®
98xx models. It also
does not cover operation and programming of Mult-
Net
®
models. This information is located in other
manuals.
1.2 TRANSCEIVER DESCRIPTION
1.2.1 GENERAL
The 98xx-series transceivers combine the latest
two-way radio features and technology into a rugged
and dependable package for the business, industrial,
and public safety markets. These transceivers are digi-
tally synthesized, microcomputer-controlled, and field
programmable. All LTR models can be programmed
for both LTR and conventional operation.
1.2.2 AVAILABLE FREQUENCY BANDS
UHF Models
• 430-470 MHz or 470-512 MHz models available.
• All currently available models are dual bandwidth
(12.5/25 kHz). Therefore, they can be programmed
to operate on both types of channels.
• High power (40W) or medium power (25W) models
available.
800 MHz Models
• Full band (806-824 MHz) operation.
• All currently available models are dual bandwidth
(12.5/25 kHz).
• High power (30W) and medium power (15W)
models available.
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 LOW AND HIGH TIER MODELS
Each UHF, 800 MHz, or 900 MHz model is avail-
able in a low or high tier version. The tier determines
operating features, and the highlights of each tier are
as follows. Refer to Section 3.1 for more information
on the operating features.
NOTE: Mid tier models are no longer available. For
information on mid tier features, see Section 1.1.
Low Tier Models
• Up to 16 system/group combinations (channels)
programmable. These combinations can be
programmed from up to 16 systems with up to 16
groups each.
• A 1.5-digit LED type display indicates the selected
system/group combination (channel) from 1-16.
• Each system/group combination can be scanned and
the scan list is programmable. Group-only scanning
is not available.
• The front panel and logic board assemblies are
unique to this model.