TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
1-3
1.2.2
AM Transceiver Model TiL-91-DE, P/N 901006-2
The Transceiver is a microprocessor controlled VHF/AM transceiver operating over the entire
band of 117.975 to 138.000 MHz in 25 kHz steps. The transceiver will store 10 or 25 user
selected frequency channels in addition to the resident emergency channel of 121.500 MHz. The
TiL-91-DE transceiver was available in either 10 or 25 channel versions until July 2012. The 25
channel version can be identified by ‘25’ or ‘1283T’ on the option label on those units. All units
manufactured after July 2012 are 25 channel only. Frequency Selection, Storage, Recall,
Channel Scan, Search, and Toggle modes are all selected by the 12-key keypad. Current
operating frequency is displayed on a backlit liquid crystal display (LCD).
1.2.3
Modular Case P/N 953209-1
In addition to housing the two previously mentioned transceivers, the TAF-550 Modular case
consists of an AC to DC Power Supply Module, a DC to DC Power Supply Module and a speaker
for the TFM-138B.
1.
AC to DC POWER SUPPLY MODULE
- The AC Power Supply Module provides the 27.5
VDC supply voltage to the TFM-138B and 91-DE Transceivers, and houses a battery
charger which will provide a combination constant current constant voltage charging and
trickle charging to an optional external 24 Volt Battery connected to the DC connector (24
VDC output only).
2.
DC to DC POWER SUPPLY MODULE
- Provides the ability to power the TAF-550 with
an external 12 VDC supply. The dc to dc convertor steps the 12 VDC input to the
required 27.5 VDC to operate the TFM-138B and 91-DE Transceivers.
3.
SPEAKER
- With on/off switching function. Speaker will monitor the receive audio from
the TFM-138B. The speaker may also be switched off if a headset is used to access the
receive audio from the TAF-550 front panel phone connector. The 91-DE Transceiver
utilizes an internal speaker for this purpose.
The lower front panel of the TAF-550 Modular Case provides a main power on/off switch, a
transceiver backlighting on/off switch, a FM/AM transceiver selection switch, a PTT test button a
1/4" headphone connector and 0.2" microphone connector.
1.2.4
Microphone P/N 961069-1
The microphone is a rugged hand-held microphone housed in a high impact plastic case. The
dynamic microphone is a noise canceling type with a two-stage preamplifier, press to talk switch,
and a retractable three-core cable terminated by a standard 0.2" aviation jack which mates with
the MIC/PTT connector located on the front panel of the transceiver. The microphone dc supply
for the microphone is supplied by the transceiver. The microphone is stored in the rear access
compartment for transportation. A mounting hardware kit consisting of a microphone mounting
clip and clip mounting screws is also provided.
1.2.5 DC Power Cable for 12V Supply P/N 963213-1
DC Power Cable Part Number 963213-1 is provided with the TAF-550. This cable is configured to
allow operation with a 12 VDC supply. Pin 1 (12V input) and Pin 2 (ground) are wired on the
connector for this cable assembly. Optional 24V DC Power Cable P/N 963212-1 utilizes the same
connector but has Pin 2 (ground) and Pin 3 (24 V input) wired. The DC power cable is stored in
the rear panel access cover.
