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Channel encoder replacement?


Oh wow great find and would you mind passing the link to both video and to buy them or either for that matter? 73's Retro
Would love to, but all I found is above, the video came off of a FB post that I can no longer find.
I seen the post, watched it, downloaded it and went back and now I can't find it again......
I will look some more later, have things on the plate today.

73
Jeff
 
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It's a USB toy. If you take it apart and extract the rotary encoder inside it might or might not be a match for any particular radio. Most radios seem to use a "quadrature" encoder that has two momentary-contact switches inside. They close only while the shaft is between detent positions. This quick make-and-break momentary setup tends to bounce. That is, the contacts are springy enough to make and break a few times the first few milliseconds after they first touch, causing the computer to false trigger. Jumps more than one increment per click, or even advances the wrong way if you spin the knob too fast.

We always used incremental encoders. The two binary outputs were static, with a different 2-bit binary code every click, repeating after four clicks. This was a lot easier to debounce and read it reliably even when spun fast.

Don't know why the radio designers won't use those.

73
 
It's a USB toy. If you take it apart and extract the rotary encoder inside it might or might not be a match for any particular radio. Most radios seem to use a "quadrature" encoder that has two momentary-contact switches inside. They close only while the shaft is between detent positions. This quick make-and-break momentary setup tends to bounce. That is, the contacts are springy enough to make and break a few times the first few milliseconds after they first touch, causing the computer to false trigger. Jumps more than one increment per click, or even advances the wrong way if you spin the knob too fast.

We always used incremental encoders. The two binary outputs were static, with a different 2-bit binary code every click, repeating after four clicks. This was a lot easier to debounce and read it reliably even when spun fast.

Don't know why the radio designers won't use those.

73
It looks like it was wired into the back of the Washington, but I can't confirm that because all you can see is the cable running underneath the radio.
I have looked around some more and can't find any other clues.
That chart that popped up had most of the Anytone style radios listed and it appeared in the video that someone had figured out a way to wire the external encoder into the radio.
It would actually be a cool feature if you had a wired encoder that you could remote mount.
Sure wish I could find where that first video came from but it was just some random post on FB.

73
Jeff
 
Presumably it wires in place of the existing encoder?
Wouldn't it be cool to be able to "plug" a remote encoder into the back of the radio for base use, and have the controller sitting on your desk.
With the abilities to change frequency,steps,and access the menus that are available on the inboard encoders.
That was my first thought.
Maybe just a pipe dream.

73
Jeff
 
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It's a USB toy. If you take it apart and extract the rotary encoder inside it might or might not be a match for any particular radio. Most radios seem to use a "quadrature" encoder that has two momentary-contact switches inside. They close only while the shaft is between detent positions. This quick make-and-break momentary setup tends to bounce. That is, the contacts are springy enough to make and break a few times the first few milliseconds after they first touch, causing the computer to false trigger. Jumps more than one increment per click, or even advances the wrong way if you spin the knob too fast.

We always used incremental encoders. The two binary outputs were static, with a different 2-bit binary code every click, repeating after four clicks. This was a lot easier to debounce and read it reliably even when spun fast.

Don't know why the radio designers won't use those.

73
The Qixiang encoders are incremental.
 
I use the Contour Design Shuttle Pro 2 (model S-PROV2) along with a simple TTL adapter I made for my frequency/channel selection on my Stryker 955HPC+. I'll have to think about selling it on Ebay I guess. What I'm still working on is addressing the Shuttle's buttons for control functions. A ham in New Zealand is helping me with that.
 


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