G2.6 T854 Optional Features M8SL2-00-002-812
© Copyright Tait Electronics Limited August 2004. All rights reserved.
2.8 Local PTT Indication for A800 SIM
This option allows the use of D-range 1 pin 3 for an external PTT indication when the
mic PTT or carrier switch is activated. Used for A-800 SIM or any other external control
or CTCSS unit.
2.9 Direct input to Buffer option
A direct input for data use. Note that this input will have 4.5V half-rail, and needs isola-
tion unless R289 is also removed. Leaving R291 as 0Ω and removing &R290 may
improve data shape (less overshoot), as &C289 is still in circuit.
2.10 Line Input Control Replacement
The Line Input control can be replaced with fixed resistors if required.
Enabled Disabled
D245 BAW56 BAW57
R276 0Ω 0Ω
%R276A 0Ω Not fitted
%R203C Not fitted See transformer option table
Enabled Disabled
%R246 0Ω Not fitted
%R291 Not fitted 0Ω
%C265 Not fitted 4U7 BP
%R259 Not fitted 22K
Enabled Disabled
%R222 4K7 Not fitted
%R234 4K7 Not fitted
%RV210 Not fitted 10K Log
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