Re: K3: re CW ID macro on SSB

Posted by K6LMP on Feb 15, 2011; 4:39pm
URL: http://elecraft.85.s1.nabble.com/CW-ID-macro-on-SSB-tp6025949p6028277.html

>From Wikipedia (my emphasis in bold):

Modulated continuous wave is defined by the Federal Communications Commission in 47 CFR §97.3(c)(4) as "Tone-modulated international Morse code telegraphy emissions having designators with A, C, D, F, G, H or R as the first symbol; 2 as the second symbol; A or B as the third symbol." See Types of radio emissions for a general explanation of these symbols.
Simply put, MCW uses a fixed audio tone to modulate a carrier wave. This is an older method of sending Morse code, with continuous wave being the more common method used today.
Unlike A1A CW transmissions, A2A MCW morse can clearly be heard on a normal AM radio receiver. It was commonly used by many RDF beacons to send a morse station identifier on a regular basis.

MCW is not allowed in the United States on amateur radio frequencies lower than 50 MHz, as it is a very inefficient use of radio spectrum.


Lew K6LMP


On Feb 15, 2011, at 9:25 AM, [hidden email] wrote:

> At one time that was illegal - is it still?
>
>
>> But that would get you a SSB transmission modulated with a tone. Not a
>> CW transmission.
>>
>> Mark  AD5SS
>>
>>
>> On Tue, Feb 15, 2011 at 10:32 AM,  <[hidden email]> wrote:
>>> any chance of recording the CW audio on a DVR and replaying and
>>> recording into one of the memories with the K3 DVR?  then jkust play
>>> it back on the air.
>>>
>>> ...bill nr4c
>>>
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