Tait T850 II Series User Manual

IPN 220-01159-01
D5.3.4
T859 PCB Information M850-00
31/09/98 Copyright TEL
L21 Changed from coil 1.5T/6.0mm (052-08160-15) to 2.5T/6.0mm (90/01-023).
L27 & L31 Changed from coil 1.5T/6.0mm (052-08160-15) to 2.5T/6.0mm (89/10-566).
R7 (Hi Band) changed from 33e (030-02330-20) to 68e. To ensure adequate drive power on hi band versions (90/08-
390).
R11 (Hi Band) changed from 10e (032-32100-00) to 22e. To improve power output from driver stages (90/06-240).
R34 & R35 (Low & Mid Bands) 180e added across base & emitter of Q6. To eliminate instability & improve power out (90/01-
023).
R37 1k added. To eliminate instability & improve power out (90/01-023).
R69 10e added. To eliminate instability & improve power out (90/01-023).
R70 220e added. To eliminate instability & improve power out (90/01-023).
R81 1k deleted. To ensure forward power alarm operates under all expected conditions (97/01-0012).
R82 & R84 Changed from 4k7 (036-14470-00) to 2k2. To ensure proper operation of alarm circuits (92/07-501).
R96 Changed from 10k (036-15100-00) to 4k7. To raise limits of reverse power alarm switching point (3/10/89).
R98 Changed from 1k (036-14100-00) to 3k9. To provide adequate setting margin for forward power alarm (89/11-
581).
356-00010-03 Solder tag fitted under R92 mounting screw and soldered to the PCB earth plane near R1/R2 junction to improve
power alarm operation (710384).
Parts List Amendments

Tait T850 II Series Specifications

General

Brand	Tait
Model	T850 II Series
Category	Accessories
Language	English