For those interested in playing with microcontrollers, there is a very easy way
to use an Atmel AVR to convert the AFSK from your favorite RTTY software to
true FSK - and provide PTT as well.
A few weeks ago, Kok Chen, W7AY, and I had a discussion about Atmel AVR
microcontrollers. I told him I
Brian,
Do not be put off by those who believe that "radio quality" audio cannot
be generated by a soundcard. That may have been true with cheap
soundcards a long time ago, but most soundcards available now will
produce pure audio tones with very little distortion - so unless you
have a totall
Cannot do this as the software sending CW would be straight CW being sent to
the CW
input jack. PSK-D and FSK-D from CW is only capable from the paddles input.
But it only takes a very simple interface using a transistor and resistor using
the
circuit described on the AA5AU website from a COM
And as has been pointed out by one of the G's here, a PICAXE-18X can be
VERY easily programmed to use a PS2 keyboard to send FSK, PSK and CW,
using the KY command, when connected to the serial port.
I've still got the K40 that I used with my IC756PRO once upon a time
in a similar role.
I can give
Don,
I am a "digital mode neophyte." Is it possible - or, is it considered to be
too much of a kludge - to receive a digital mode (be it PSK or RTTY) via PC
soundcard and send CW to the K3 for translation into the digital mode? It
seems that this would avoid some of the pitfalls associated with us
Richard W. Solomon wrote:
> Does anyone have any idea when they will upgrade to Keyboard operation
> for RTTY ? Now, I mean using real FSK, not this sound card AFSK stuff.
If you're talking about plugging a keyboard directly into the K3, I
don't think there's any plan to implement that.
"Real"
[Elecraft] K3 RTTY MODE
To: elecraft@mailman.qth.net
Date: Monday, March 23, 2009, 12:12 PM
Does anyone have any idea when they will upgrade to Keyboard operation
for RTTY ? Now, I mean using real FSK, not this sound card AFSK stuff.
In some radios, AFSK requires you to use the SSB mode, which does
Dick,
Rather than using SSB mode for data, use the DATA modes, it is less
troublesome and compression is set to zero automatically..
Use DATA A mode for soundcard digital modes, or AFSK A for soundcard
RTTY. See page 31 of the K3 manual. With good carrier balance, an AFSK
signal is equal to a
Does anyone have any idea when they will upgrade to Keyboard operation
for RTTY ? Now, I mean using real FSK, not this sound card AFSK stuff.
In some radios, AFSK requires you to use the SSB mode, which does not
allow filter selection. The Yaesu does.
73, Dick, W1KSZ
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