And some of today's software applications {HRD} have provision for
MCW. One must be careful how the interface between the computer and
radio is constructed so as not to have anything in the audio path which
would contribute to less than a pure sinewave signal. Actually this
is exactly
A technique pioneered by Art Collins many years ago in the KWM2 and S-line.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 4/9/2019 3:08 AM, Victor Rosenthal 4X6GP wrote:
Oh no! NOW you tell me that all these years that I have believed that
I have been operating CW, it's really SSB!
Not to worry, Victor. The really important part of generating and
demodulating CW happens in your head.
Eric KE6US
On 4/9/2019 3:08 AM, Victor Rosenthal 4X6GP wrote:
Oh no! NOW you tell me that all these years that I have believed that
I have been operating CW, it's really SSB!
(Disclaimer
Oh no! NOW you tell me that all these years that I have believed that I
have been operating CW, it's really SSB!
(Disclaimer to avoid the otherwise inevitable explanations that a pure
audio tone transmitted via SSB is identical with CW: I know that).
73,
Victor, 4X6GP
Rehovot, Israel
Wayne,
Thanks for the explanation. I should have realized that it might have been
documented.
My question was prompted by the appearance of a question posted to the "ham
radio" formum of Stack Exhange on-line. The OP (original post) of the question
mentioned looking at a 1976 ARRL Handbook
By the way, a similar explanation can be found in the Theory of Operation
section of any of our transceiver manuals.
Wayne
N6KR
> On Apr 7, 2019, at 9:58 PM, Phil Hystad via Elecraft
> wrote:
>
> If you look at various old circuit diagrams of ancient radios made from
> electronic circuits
Hi Phil,
In the K2 the sidetone starts off as a squarewave created by the
microcontroller. This is then shaped and injected into the AF amplifier. The
sidetone is turned on/off at the same time as the carrier, which is generated
by the LO (PLL synth) mixing with a gated TX BFO signal.
In our
If you look at various old circuit diagrams of ancient radios made from
electronic circuits you find that the telegraph keying for the radio involves
switching on and off the driving oscillator frequency or something similar.
However, with an SDR, you have other options and I have no idea how
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