User Manual

TECHNICAL NOTICE

Applies to Firmware Versions Prior to Version 2.005

Tactic TTX660 computer transmitters prior to ﬁ rmware version 2.005 have a

programming error. The error causes the assigned switch for CH5 and CH6 to be

non-functional after the transmitter power has been cycled. The switch function

can be restored by re-assigning the switch in the CH5 and CH6 set menu option.

This error does not affect any other function in the transmitter.

If your TTX660 does not exhibit this problem or this error would not affect your use

of the TTX660, then no action needs to be taken. If your radio exhibits this error

and you would like this issue corrected, you will need to ship your TTX660 to the

Horizon Service Center for a ﬁ rmware update.

NOTE: This ﬁ rmware update is only for the TTX660 Transmitter. The update

does not add any additional features to the transmitter or change any other

existing functions. This update is only for the purpose of correcting the switch

assignment error for CH5 and CH6.

For the ﬁ rmware update please ship your TTX660 transmitter to:

Horizon Service Center

2904 Research Rd.

Champaign, Illinois 61822

The transmitter can be shipped in the original packaging or a sturdy box with

adequate padding to ensure the transmitter will not become damaged during

shipping. Please include documentation with the transmitter indicating your need

for this ﬁ rmware update, and your return shipping information. When received, the

transmitter will be promptly serviced and returned to you. The ﬁ rmware update

and return shipping is a no-cost service, so no payment needs to be included.

Created 02/2019 61247TACJ2660

Tactic is a registered trademarks of Horizon Hobby, LLC.

All other trademarks, service marks and logos are property of their respective owners.

http://www.HorizonHobby.com/