MT-63 requires a very accurate soundcard calibration.
1% out of calibration (or even less) and MT-63 struggles.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: "Leslie Elliott"
Thanks, I kind of figured it out myself. There was a QSO I was
listening to later,
Thanks, I kind of figured it out myself. There was a QSO I was
listening to later, which switched from PSK to MT63. However, I could
not get a decode after they switched. I'm using DM780, and try as I
might, carefully adjusting the trace back and forth to try to center
it on the signal, I could
To me the most basic and straight forward way is to specify the actual
radio frequency you will be radiating (on idle-tone if any is used in
that mode). So all that is needed is this figure followed by (RF), and
for some modes whether USB or LSB if side-band sensitive.
e.g. 7.0350 MHz (RF) USB.
That'll be JT65A. The primary software package to use is WSJT, available
here:
http://www.physics.princeton.edu/pulsar/K1JT/
I understand that later versions of MultiPSK also support the mode, but
I haven't tried it.
Mike N5UKZ
see...@aol.com wrote:
>
> I am trying to identify a signal heard
Your software is running inverted so that it comes out correctly. By the
original definition 2125 Hz. was the MARK tone and it was the higher of the two
RF frequencies. Since the SPACE tone was a higher audio frequency (2295 for
170 Hz. shift) LSB was necessary to make it the lower RF frequenc
I am trying to identify a signal heard often lately on 20 meters around
14076-14078.
It is a multitone (probably 16 tones), and occupies approx 200 hertz bandwidth.
The tones occur singly (sequentially) and at a slower rate than MFSK-16.?
Transmission
lengths appear to be consistent with a normal
Craig,
The sideband selection in RTTY may depend upon your choice of software
when using AFSK. Some of the authors just set everything up for USB for
all modes and the software actually converts it to the opposite tones as
if you switched sidebands.
Originally, when equipment was modified for
The defacto standard for PSK31 frequency listing:
USB VFO "dial" freq kHz and "audio" centre freq Hz
Examples:
"14070kHz USB + 1500Hz"
"14070 + 1500"
The defacto standard for PSK31 is Upper Sideband
on all ham bands, so sideband is often not listed.
There are other
Jose A. Amador wrote:
> Pactor 3 MUST be USB.
To remain compatible. If EVERYBODY used LSB, there would not be any
problems, of course. Just a thought after I reread this from the list...
Jose, CO2JA
VI Conferencia Internacional de Energía Renovable, Ahorro de Energía y
Educación Energética
9
After years of supporting using "true RF frequency" for PSK31, I have given
up, because too many people still get confused trying to calculate the "true
RF frequency". So for our net, I now say, "Set your transceiver dial
frequency to 144.144, USB, and net control will be at 1500 Hz tone
freque
that is strange all my RTTY contacts are in USB using AFSK and that is at least
1800 contacts in RTTY every now and then I might run into someone inverted but,
99% are in USB
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