User Guide

Series III Avionics

Pilot's Guide

Page ii

Wulfsberg Electronics Division, located in Prescott, Arizona, designs and manufactures the Chelton

Series III line of products, including the VCS-40A VHF Communications System. For more than 25 years,

Wulfsberg Electronics has distinguished itself by providing top quality avionics products for civil, air

transport, and military applications.

Information in this manual is subject to change without notice. No part of this manual may be reproduced

or transmitted in any form or by any means, electronic or mechanical, without express written permission

of Chelton Avionics, Inc.

Chelton Avionics, Inc. makes no warranty, expressed or implied, with regard to this manual, including but

not limited to any implied warranties of merchantability, fitness for a particular purpose, and non-

infringement. In addition, Chelton Avionics, Inc. makes no warranty with regard to the documentation or

data contained herein. Chelton Avionics, Inc. is not liable in the event of incidental, special,

consequential, or any other damages in connection with or arising from furnishing, performance, or use of

this manual.

VCS-40A, VC-401B, CD-402B, VNS-41A, VN-411B, CD-412B, CD-413B, TRS-42A, TR-421B, CD-422B,

DFS-43A, DF-431B, CD-432B, DMS-44A, DM-441B, and SD-442B are trademarks of Chelton Avionics, Inc.