[Elecraft] KX1 Rotary Encoder spare

[Dave Van Wallaghen]

Yeah Paul, I'm not really sure why the manual states that. This is an 18 
PPR version. I got that part number from the bill of material database 
at Elecraft. Since I am offsite, I just wanted to get my own order since 
I replace a number of them throughout the year.

73,
Dave, W8FGU



On 3/25/2026 2:52:29 PM, "Paul Jewell" <paul at teulu.org> wrote:

>Hi Dave,
>
>Many thanks for this information. Looking at the part number, it looks 
>like I can get it from DigiKey here in the UK. The only query I have is 
>regarding the pulses per revolution rating. The Elecraft handbook for 
>the KX1 indicates 80 PPR, but all the examples, including the one you 
>are using are 30 PPR or less. I guess this still works, but needs more 
>rotation of the dial for the same movement? As you have been using this 
>DigiKey part, I assume there is no issue with this, and I will go ahead 
>with ordering. Perhaps I am reading the handbook incorrectly!
>
>Thanks also to Jack and William for their replies and feedback - it is 
>much appreciated!
>
>73,
>Paul
>MW7PAJ
>
>On 25/03/2026 15:47, Dave Van Wallaghen wrote:
>>Hi Paul,
>>
>>I do the service for the KX1 through my company W8FGU Services, LLC 
>>and for Elecraft. I found a good supply of those through DigiKey. 
>>Their part number is PEC11R-4015F-S0018. It is an exact match and I've 
>>been using them for a couple of years now. Hopefully you can source 
>>one over there. If not, it is our part number E640018.
>>
>>73,
>>Dave, W8FGU
>>
>>
>>
>>On 3/25/2026 11:19:13 AM, "Jack Brindle via Elecraft" 
>><elecraft at mailman.qth.net> wrote:
>>
>>>Paul;
>>>
>>>Contact tech support. The same part
>>>             was used in the K3 for the four controls just to the left of
>>>             the big knob. The original part was from CUI Stack, part
>>>             number AEC11BR4E-15FD1. That appears to no longer be
>>>             available, and CUI Stack has renamed themselves as SameSky.
>>>             There _may_ be a part available from both Digikey and Mouser
>>>             with part number ACZ11BR4E-15FD1-20C. The _may_ is critical
>>>             here - be sure to take a really goo look at this part before
>>>             ordering it. There may be difference (including how it
>>>             mounts) that will make if difficult to use in place of the
>>>             original.
>>>
>>>Again, talk to Elecraft tech support.
>>>             They may have a better solution.
>>>As always, please let us know what you
>>>             find.
>>>
>>>73,
>>>Jack, W6FB
>>>
>>>>  On Mar 25, 2026, at 7:59 AM, Paul
>>>>               Jewell via Elecraft <
>>>>elecraft at mailman.qth.net>
>>>>               wrote:
>>>>
>>>>  Good afternoon all,
>>>>
>>>>  I am looking for a spare rotary
>>>>               encoder for my KX1 - the existing unit is now erratic, and
>>>>               ready for replacement.
>>>>
>>>>  I am in the UK, but have friends in
>>>>               Europe if that is easier. I have also written to Lutz, in
>>>>               case they have spares but I am covering all my bases.
>>>>
>>>>  Do any of you have a spare you are
>>>>               prepared to sell, or do you know the OEM part number
>>>>               (rather than the Elecraft one)? It seems 80 PPR encoders
>>>>               are not common.
>>>>
>>>>  I believe it is possible to split
>>>>               the housing and clean it, but looking at it, I don't think
>>>>               that would be easy!
>>>>
>>>>  Many thanks!
>>>>
>>>>  73,
>>>>  Paul
>>>>  MW7PAJ
>>>>
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