TONO THETA - DRAKE THETA - repair and modifications

On this page you will find items for repair, maintenance and modifications to Tono Theta and Drake Theta morse/rtty decoders.

Tono Theta 5000 restoration EB5AGV's Workbench:

Again: Tono decoders can take a load af abuse. They do not only gather dust, but also loads of other mishaps. See EB5AGV's workbench page for his recently acquired Tono 5000. Now undergoing complete cleaning and restoration. A truly meticulous job. A beautifull shining and fully working machine will soon arise!

See for yourself on the Workbench pages

Tono keyboard switch repair performed on Tono 7000 by Des O'Brien  ZL2OB

Tono decoders are sturdy machines that date back 20 years, and are still used by many radio amateurs. Most of the tono's will even perform outstanding after being used
-or stored on a shelve- for long time. But even so, sometimes a key from the keyboard will not make proper contact due to oxidation or dirt trapped in the key switch.

Read the how-to instructions

Batteries don't last for 20 years

Most Tono machines are equiped with batteries for memory-backup. Some even still contain the original batteries. If you get your hands on one of these its wise to open up the case and remove the old batteries.
Old batteries will start to leak and may damage internal components.

If you have a contribution to add to this list of repair, maintenance and modifications. Please send your idea by e-mail.