The simplest way is to connect an external tone oscillator to pin 8 of J3 Through a diode.
Walt Cates, WD0GOF
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A majority of acceptance is not proof of correctness.
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Good day all
I enjoy using various vintage "separates" on CW, with a bug.
The common issue is what to do for sidetone when using a straight key or bug. Typically,? not music the Rx, and have a fast hand on the RF gain control works well.
But, Collins and Drake have a sidetone.?
Has anyone added a sidetone to HT44/ SX117 or HT32B/SX101 SX115 combos?
73
W8tow
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