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Identification of a
Motorola Quantar Station
Where To Begin:
The quickest, most non-invasive method of identifying the basic band of a Quantar
is to look at the receiver module on the right side of the card cage. A 700/800/900 MHz
station will have no holes. A UHF station will have 5 holes, but only three will have tuning
slugs visible. A VHF station will have five holes, with 5 tuning slugs visible.
If the station is in the desired band, the next step is to look at the rear of the
unit and read
the part number label on the power amplifier module. It is usually visible without removing
There are two different numbers you may encounter - the OEM (Original Equipment
modules used during assembly at the factory and if any modules have been replaced, FRU
(Field Replaceable Units). If this is the case, you will see different part numbers, typically
with "LN" in the second and third position.
The FRU and OEM units are the same components - one is a repair part, the other
All VHF Range 2 (150-174 MHz) equipment will tune and operate down to approximately 146 MHz.
Power Amplifier Modules:
If the number on the PA (power amplifier) is highlighted in red, the next step is to
remove the exciter to verify that it has the correct part number for the station.
However, on the exciter and receiver modules, the manual references a third part
number (CLx) in the "Factory Option Matrix". At least one of these, CLD1260
crosses to the TLN3251 in MOL. However most do not cross in MOL.
Any of the three part number formats could possibly be found on a Quantar exciter
module. Most importantly, they all refer to the same component.
Each receiver module is made up of the receiver itself and the preselector.
The same part number identification system as the exciter modules applies.
CAUTION: Make sure both the AC and DC (if so equipped) power is
disconnected from the station before removing or inserting any modules.
An ESD strap is recommended as well.
Each module is held in place in the card cage with two T15 Metric Torx screws.
On the 100-watt stations, a short coaxial jumper feeds the power amplifier module
from the exciter in the adjacent position in the card cage. This needs to be removed
prior to removing the exciter or power amplifier. All modules unplug from the backplane
as you slide them forward.
Quantar Bonus Items:
The Quantar station may be equipped with several items that make it more attractive
for amateur use:
Handy Part Numbers for Accessories:
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