Old Telegraph key, new use, Help

[KK6YBJ]

Connecting an oscillator to an FM radio isn't actually CW.

CW is turning the carrier off and on. There is no modulation either by frequency or amplitude hence the term continuous wave. (CW). It's officially designated 'A1A'.

Sending on/off tones via an FM radio results in a frequency modulated signal. It's usually called 'Modulated CW' and abbreviated (MCW). The official designation is F2A.

CW is allowed pretty well everywhere.. MCW isn't. You would not want to transmit FM MCW below 29.520 Mhz

Thank you for the clarification on MCW/CW, I didn't know that they were different for where they were allowed, as the band plan didn't specify. I plan on using this for 2m and/or 70cm, which is well above 29.520 Mhz.

Thanks again for the clarification.

 

[jwt873]

It is confusing The code itself is called 'continental code' (AKA Morse code). So technically, you learn code, not CW. But, the two terms have become solidly linked. Almost everyone who hears any form of code will describe it as 'CW', (Including me).

As a point of interest, there are a pile of designated emissions. MODULATION CODES

And, these are now old. To address all the new digital transmission modes, the ITU has made it even this more complicated. (So instead of A1A, CW is now 150HA1A). There is a list of the new emission codes here on Radioreference: Emission Designator - The RadioReference Wiki

 

[KK6YBJ]

After a long struggle of finding parts waiting for them to come, waiting for a breadboard, and trying to find time to work on it between homework and lacrosse, I've finally done it. Here is my progress so far, all I have to do is add the battery terminal, and wire in the two headphone jacks, and I'll test it out. If it works, I'll transfer it to a solder-able protoboard and an enclosure.

 

[K4EET]

Looking good! 73, Dave K4EET

 

[KK6YBJ]

Thanks!