Many times techs will add a new feature to a rig (like a 10kc jump switch), and will disconnect an existing switch to use with the new feature. Other techs will drill holes in faceplates or cabinets and install toggle switches, which just reduces the value of the radio, and looks tacky too.
The easy way to install new features is to replace a control pot, like the squelch, rf gain, clarifier, etc., with an identical value pot w/push-pull switch. The Alpha potentiometers shown above are available in 10k, 20k, 50k, 100k,and 200k values and each incorporates a DPDT switch operated by pulling the switch shaft in/out.
On my TRC-457, I replaced the rf gain, squelch, mike gain, clarifier, and SWR cal controls with new controls with switches. I was able to add a tape monitor, 10kc jump, DC output jack control, cooling fan switch, and a keyup tone switch to the rig without disabling the ANL, NB, PA/CB features or drilling any holes. I had previously removed the headphone jack and installed a mike gain control with a factory 457 knob. So, the rig looks stock and unmodified.
I found the pots/switches on ALIEXPRESS. There are several companies there that sell them, but one offers mix and match if you buy 25 or more. At $1.44 each with free shipping, it was a no-brainer. Only took 8 biz days from China to Colombia, door-to-door. Probably faster to the US.
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