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Re: [TenTec] TenTec Digest, Vol 208, Issue 6

To: tentec@contesting.com
Subject: Re: [TenTec] TenTec Digest, Vol 208, Issue 6
From: "Eric Rosenberg" <ericrosenberg.dc@gmail.com>
Reply-to: Eric Rosenberg <ericrosenberg.dc@gmail.com>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 24 Apr 2020 16:43:18 +0000
List-post: <mailto:tentec@contesting.com>
I replaced the encoders on my Orion 565 a couple of years ago.

I *hate* the replacement encoders with detents.

Is there a way to "fix" them (i.e., remove the detent mechanism) without removing and reinstalling the encoders?

73, Eric W3DQ
 From: Gary Follett
 Sent: Thursday, April 23, 2020 11:23 AM
 To: Discussion of Ten-Tec Equipment
 Subject: Re: [TenTec] O-II Encoder Part?

 When I replace the encoders, I disassemble them and remove the spring that 
makes the detent operate in stepwise fashion.
 If you do not do that, some adjustments will double step.

 It takes about 5 minutes each to do this.

 Yes you need to use the longer ones.

 The part number (Digikey) is PEC11L-4225F-S0015-ND

 Gary

 On Apr 23, 2020, at 12:58 AM, Martin Sole <hs0zed@gmail.com> wrote:

 A couple of points worth noting.

 All of the currently available encoders today that meet similar electrical and 
mechanical specifications seem to be those with detents as opposed to the 
smooth rotating encoders of the original encoders. I don't think I object to 
that personally but something to maybe be aware of.

 Though not ideal the encoders can be disassembled if your vision and tool kit 
are up to it. This allows removal of the detent function followed by reassembly 
of the encoder. It can be done though there are failure opportunities along the 
way.

 Secondly watch out for the shaft length. I forget exactly but I think only the 
versions with the longest shaft length (25mm?) can be used.

 The lower resolution 15ppr is I think the same as the original and better than 
the higher resolution 20ppr with which you will need to crank the knob much 
more for the same effect.

 Knob removal is by pulling off the silver collar and then undoing the hex set 
screw. Board removal requires undoing all 6 of the plastic collars.

 Martin, HS0ZED
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