locked Release Candidate WSJT-X 2.6.0-rc1 #general


Pietro Molina
 

I never saw this effect: link https://www.dropbox.com/s/5csq20ase8h9xqs/Screenshot%202022-06-17%2012.00.54.png?dl=0
I have often seen a ghost signal with lower intensity, in previous versions, especially off 50Hz. In the decoding panel, however, there was only one line, the ghost images were not reported. This has never happened with such close signals, I think due to noise in my receiver or transmitter.
Not a big deal, but in case of congested band it can be disturbing.

Pietro I2OIM


Michael Black
 

That could be aircraft reflection.  Just a touch of Doppler.
Mike W9MDB

On Friday, June 17, 2022, 06:39:07 AM CDT, Pietro Molina <pietro@...> wrote:

I never saw this effect: link  https://www.dropbox.com/s/5csq20ase8h9xqs/Screenshot%202022-06-17%2012.00.54.png?dl=0
I have often seen a ghost signal with lower intensity, in previous versions, especially off 50Hz. In the decoding panel, however, there was only one line, the ghost images were not reported. This has never happened with such close signals, I think due to noise in my receiver or transmitter.
Not a big deal, but in case of congested band it can be disturbing.

Pietro I2OIM


Al Groff
 

It could also be caused a power line ( 50 hz in EU) induced AM modulation. It could be power supply ripple on the RF PA, AC modulating the TX audio tones and even RF coupled to the AC lines with a rusty joint and re radiated..

AL, K0VM

On 6/17/2022 6:46 AM, Michael Black via groups.io wrote:
That could be aircraft reflection.  Just a touch of Doppler.
Mike W9MDB


On Friday, June 17, 2022, 06:39:07 AM CDT, Pietro Molina <pietro@...> wrote:
I never saw this effect: link  https://www.dropbox.com/s/5csq20ase8h9xqs/Screenshot%202022-06-17%2012.00.54.png?dl=0
I have often seen a ghost signal with lower intensity, in previous versions, especially off 50Hz. In the decoding panel, however, there was only one line, the ghost images were not reported. This has never happened with such close signals, I think due to noise in my receiver or transmitter.
Not a big deal, but in case of congested band it can be disturbing.

Pietro I2OIM









Jim Brown
 

On 6/17/2022 4:46 AM, Michael Black via groups.io wrote:
That could be aircraft reflection.  Just a touch of Doppler.
Those of us around San Francisco and San Jose see this pretty often, thanks to multiple airports with lots of traffic. I'm 20 miles from the nearest airport and see it often.

73, Jim K9YC


Pietro Molina
 

Yeah, I think the ghost is for this. Buto old WSJT-X does not list the
ghosts, only the most powerful signal.

Pietro (via Tablet)

Il ven 17 giu 2022, 20:29 Al Groff via groups.io <al.k0vm=
yahoo.com@groups.io> ha scritto:

It could also be caused a power line ( 50 hz in EU) induced AM
modulation. It could be power supply ripple on the RF PA, AC modulating
the TX audio tones and even RF coupled to the AC lines with a rusty
joint and re radiated..

AL, K0VM



On 6/17/2022 6:46 AM, Michael Black via groups.io wrote:
That could be aircraft reflection. Just a touch of Doppler.
Mike W9MDB



On Friday, June 17, 2022, 06:39:07 AM CDT, Pietro Molina <
pietro@...> wrote:

I never saw this effect: link
https://www.dropbox.com/s/5csq20ase8h9xqs/Screenshot%202022-06-17%2012.00.54.png?dl=0
I have often seen a ghost signal with lower intensity, in previous
versions, especially off 50Hz. In the decoding panel, however, there was
only one line, the ghost images were not reported. This has never happened
with such close signals, I think due to noise in my receiver or transmitter.
Not a big deal, but in case of congested band it can be disturbing.

Pietro I2OIM