This clever little design uses the output transistor as a mixer during receive and my modification is to key it with rectified audio from the computer. It's putting out a very pleasing little signal (barely moves a power meter but thats fine for a mode like this) but my audio keying circuit needs work.
4 comments:
I thought computer geeks had indecipherable jargon but you radio guys have got us beat hands down . "Feld Hellschreiber" is a good one
Yes I can't get enough of this mode. It dates back well before computers and is a kind of one line mechanical fax.
Stephen, the chap I'm communicating with sometimes uses a valve transmitter at his end.
I really like the concept and am following with interest. For too long I've been struggling to learn CW. This mode may be the alternative fuzzy mode but I see next to no Hell activity on the bands. We should try for a QSO once I get my antenna back up - and it'll be nearly all valve at this end apart from the PC!
Yes let me know when your antenna is up and we'll try for a contact.
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