Morse Trainer from BH8DZE

The bottom 3.5mm socket labled "automatic chain" processes a Iambic (dual lever or paddle) keyer correctly, with the switch to its' right, labled "flip", reversing the dots and dashes. The momentary switch, to the left, is supposed to change the speed but does nothing. This socket dose not handle a straight keyer.

Surprisingly, the 3.5mm socket at the top, labled "Output" does handle the input from a straight key. Key down buzzes and key up is silent as expected with no timing imposed.

The blue LED, in the top right hand corner, flashes when ever the buzzer is active for both key type inputs.

The board is labed "1666956A_P9_250429". Maybe the last six digets are a date.

I have had little success with these modules. The first one I ordered failed to power up. The second module refused to change speed on the button press so it is locked at a low speed, below 10 words per minute, which is very fustrating when your objective is 15 words per minute or better.



The rear view shows the lable "BH8DZE Yizse Technology" and the 3.0 volt, CR2032 lithium battery with positive side facing outwards