[Elecraft] K3 Rotary encoder

[evert at pa2kw.com]

Hello Kimo and others,

 

Thank you all for your the answers.

I think Ramon (wd4x) came up with the right ones.

 

I checked the size and they are the same.

Found them at Mouser for € 1,71 (abt $ 1,70) each, ordered them and they will be delivered Tuesday. So that’s fast.

I will replace them all as they are in a nasty place (most probably have to remove the LED board but will have to look into it carefully).

 

73, Evert PA2KW

 

From: Kimo Chun <kimochun at gmail.com> 
Sent: Sunday, 21 May 2023 18:48
To: David Pratt <david at g4dmp.co.uk>; evert at pa2kw.com
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Rotary encoder

 

I am no expert on this radio. However, I notice that the part Evert is referring to is not the same or type of encoder/part that David mentioned. I am only going by the visual representation in the manual.

The E850239 is one of two identical rotary encoders used for VFO A and B. I purchased a spare of that particular part. There is no part number listed in the Assembly Manual for the HI / WIDTH control first mentioned. It appears that part is one of several that are preinstalled on the E850242 Front Panel PCB Assembly and is not normally available or installed as a separate kit part.

 

However, contacting the factory is advised if not already done.

 

1. They would be able to say whether it is advisable for that part to be replaced in the field (granted, many people have the expertise and equipment to do so).

 

2. They have been open to me and others with offering any parts (for sale) that can be and/or in lieu of that, giving the OEM part they sourced themselves. Those, in my case, were from Digi-key for which they provided their part number purchased. Though not likely applicable in this case, one thing you might have to investigate is whether the part Elecraft sourced is correct for small quantity purchase and packaging format (not on a reel of SMD intended for automated feeding and insertion). I"m injecting this though I don't know if Elecraft does this. I think their contracted board assembly builders may.

 

The point is...ask the source. If you want me to phone them on your behalf I'd be glad to do so (so no international phone call).

 

Good luck.

73, Kimo Chun KH7U

 

 

 

On Sun, May 21, 2023 at 12:07 AM David Pratt <david at g4dmp.co.uk <mailto:david at g4dmp.co.uk> > wrote:

Several years ago I had a problem with one of my K3 encoders and 
obtained a replacement E850239 from Elecraft under warranty. However, I 
noticed that the two halves of the encoder had started to separate. They 
were held together by small aluminium rivets. By carefully removing the 
rivets, one by one, and replacing them with small screws of a suitable 
size the encoder could be repaired.  If your problem is with the encoder 
halves separating, Evert, that might be worth a try.

73 de David G4DMP

On 21/05/2023 10:46, evert at pa2kw.com <mailto:evert at pa2kw.com>  wrote:
> I think I have a defect rotary encoder on a K3.
> It is the one used for setting the bandwidth (Hi/Width).
> Anyone out here who knows the manufacturer / type number of this rotary encoder?
> 
> 73. Evert PA2KW

-- 
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| David M Pratt, Kippax, Leeds, UK  |
| Website: https://www.g4dmp.co.uk  |
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