[Elecraft] KX1 Rotary Encoder spare

[Paul Jewell]

Well, Digikey didn't hang around with their shipping - I received the 
new part a few days ago, and this afternoon I removed the old one and 
fitted the new one. Everything is now working as expected. First test of 
the radio: I called CQ on 20m, and was picked up in Sicily - not bad for 
2.5w from North Wales!

Thanks to Dave and everyone else for their comments and advice.

73,
Paul,
MW7PAJ

On 25/03/2026 19:09, Paul Jewell via Elecraft wrote:
> Thanks Dave - I have placed the order, and according to DigiKey they 
> should be here within the week.
>
> 73,
> Paul
> MW7PAJ
>
> On 25/03/2026 18:59, Dave Van Wallaghen wrote:
>> 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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>>>>> ______________________________________________________________
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