If you know of anyone with a stocked TCS spares chest
(not the one for the power supplies- the one for the radios),
it has a boxed replacement for that pot.  That's where
 I found one for my TCS-12.  I know of no other source.
GL OM DE Dave AB5S

On 4/26/2025 7:56 PM, B. Smith via Milsurplus wrote:
Wanted  a 100K pot for TCS receiver RF gain. This pot has a switch that is normally closed during rotation of the shaft and is activated open (switch clicks)  at the full CW position of the pot. Most pots have a switch at the CCW position of the shaft.
K4CHE