How to Build a Great CW Filter for the Ten Tec Triton IV

photo of the CW Filter Assembled and Tested

As I mentioned in an earlier post, I owned a Ten Tec Triton IV (model 544) in the late 70’s and always loved it. I traded the radio a few years later for an ICOM 720a (also a great radio), but always regretted losing the Triton. Fast forward about 40 years, and the gift of an old Triton II reminded of that first love. The Triton II is similar, but the IV had several refinements that made it really great at the time, and I decided to get one again.

How to Modernize a Classic Ten Tec 670 Keyer

photo of the Perspective view of finished project

Over the years, Ten Tec has released a surprising number of CW (continuous wave or Morse Code) Keyers for Amateur Radio use. There have been two basic designs, single paddle and double or imabic paddle models.  Released in about 1975, the Model 670 is a single paddle version, intended for use with the Century 21 CW transceiver.