The volume and squelch controls were getting pretty scratchy. The volume finally gave up and wouldn't make contact with the wiper, which meant full volume!
Consulting the manual showed that Mouser had the parts in stock
| Mouser #: | 688-RK097111202P |
| Mfr. #: | RK097111202P |
| Desc.: | Potentiometers Potentiometers Flat 25mm 10k |
| Mouser #: | 688-RK0971114D0B |
| Mfr. #: | RK0971114D0B |
| Desc.: | Potentiometers Potentiometers Flat 15mm 10k |
What was not apparent at first was that the pin arrangement spacing on the volume control was not exactly the same. This required some modification to the sub board. A #61 drill bit in a manual push drill made short work of this small modification. The potentiometer tabs were easily bent over to make contact with the original pads.
The other difference that had to be dealt with was the difference in the shafts. The original was a splined shaft, these new pots have a D shaft. Adapting the original knobs was reasonably easy. Since they are plastic and have a bit of elasticity, they were drilled out with an interference fit. They could then be pressed on the D shaft and still stay in place.
The next project for this radio will be to build a Lithium battery pack for it and make it so it can be mounted to my bicycle.
