[Elecraft] K3S RIT Woes

[Geert Jan de Groot]

Hi,

Keith of Elecraft fame has already answered this on another mailing 
list:  https://groups.io/g/Elecraft-K3/message/43244


The K3 RIT encoder is;
Z7    Encoder, 96 Counts, Contacting       Elecraft # E640021    Bourns 
PEC16-4015F-N0024        **AntiRotation pin must be CUT
https://www.digikey.com/en/products/detail/bourns-inc/PEC16-4015F-N0024/3780221

The VFO A and B encoders are different (but the same as eachother), and 
same as the K4, so we have lots of them.
Assembly with circuit board is E850239;
Encoder alone;   Encoder, 400 Counts, Optical    E640020     Bourns 
ENS1D-B28-L00100L

4 Pushbutton  encoders are E640018;
Z1-4    Encoder, 80 Counts,w/PB Switch      E640018    Bourns 
PEC11-4015F-S0018

Keith WE6R K3/K4 Tech



My personal experience is that replacement of the RIT encoder isn't hard.
You need to take the K3 apart - check the assembly manual. Note the 
screw on the left bottom of the main PCB you need to losen when removing 
the front panel.

If your K3 has RIT issues, chances are that the four bandpass filter 
encoders are on their way out and if it were me I would at least order 
them, if not replace them, at the same time. I'd order at digikey and 
"just do"

73, Geert Jan