External controller for ATS-4 de JA7QIL

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Katsu JA7QIL has built an improved method of tuning up and down the band when operating the ATS-4 – and added paddles to boot.

In his own words (and with Katsu’s kind permission to post here):

For easier ATS-4 operation, I built an ATS-4 Controller with touch paddle as shown below. Though I call it “Controller”, it is nothing but a simple  directional tactile switch box. I used an ALPS SKQUAAA010 tactile switch which has 4 contacts in one package – one for each direction.

It is much easier to move around the CW band than with separate up and down tactile swithes.

Here are photos of Katsu’s completed Controller and a wiring diagram:

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