APU-0018
Publication UpdateAmateur Radio Division
Subject: TS-450S - Rotary Encoder ChangeDate: November 22, 1993
Background:
The main encoder has been changed from a carbon contact type encoder to a metallic contact encoder in order to increase reliability. When replacing the encoder use the new part number shown below.

Parts Required:

Qty
Description
Old Part Number
New Part Number
Circuit Description
1EncoderW02-1687-05W02-1687-15S1
Service Code: A: 22 B: X41-3170-00 C: S1 D: 91
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