[GreenKeys] Single Tone Keying

[B. Smith]

I've added another 555 board as a tone generator to send RY's Mark only 
to the TU for "Make and Break" RTTY.

http://k4che.com/Tempvideo/RY%20Comparison/RY%20Mark%20Only.mp4

K4CHE

On 9/7/2023 11:21 AM, W2HX wrote:
>
> I’ve also heard of this type of keying called “OOK” keying 
>  (On-Off-Keying)
>
> 73 Eugene W2HX
> Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos 
> <https://www.youtube.com/@w2hx/videos>
>
> *From:* greenkeys-bounces at mailman.qth.net 
> <greenkeys-bounces at mailman.qth.net> *On Behalf Of *B. Smith
> *Sent:* Saturday, August 26, 2023 7:58 PM
> *To:* greenkeys at mailman.qth.net
> *Subject:* [GreenKeys] Single Tone Keying
>
> The schematic I posted of a simple single tone "Make and Break" keyer 
> needs a slight correction. The printer magnet drawing that depicted 
> parallel configuration is in error. The coils in parallel need to be 
> wired so that one of the coils is out of phase to prevent "Bucking" of 
> the field.
> BTW a Range Filter such as the military FL8  on the input served as a 
> filter but is not needed when using a "Rice Box" receiver with all its 
> filter options.
> k4che
>