20200207_121045 -10 0.3 2741 ~ TI9A W5CIA EM40 20200207_121045 -4 0.3 3221 ~ TI9A W5CIA EM40 20200207_121045 2 0.3 2141 ~ TI9A W5CIA EM40 20200207_121045 3 0.3 1301 ~ TI9A W5CIA

I see that effect quite often on 6m from a station that is on the other side of the Phoenix airport. Paul, W8AEF

I see this occasionally on HF, usually when the geomagnetic field is disturbed. I assume it's caused by multipath or doppler distortion.

Hello all! I'm having some issues with WSJTX playing nice with FLRIG. WSJTX without flrig works flawlessly. WSJT-X v2.1.2 0068f9 FLRig 1.3 Mac Catalina Yaesu FT-991A and Grid Tracker to log and

Out of respect for the list owners and participants I’m not furthering this discussion. You may contact me offline. N2RJ@... or rjairam@... 73 Ria,N2RJ

Ria, I think Seannon is over thinking this by citing this and that CFR. One must think like Perry Mason where he sometimes looks for what is missing to solve his case. This is what I posted

YES! 73, Jim K9YC

Yes. There can also be multi-path on the HF bands -- it's the fundamental cause of both "selective fading," and "picket-fencing," the difference being the period of the fading directly related to

Right. SMPS start by rectifying AC, there's a minimal capacitor filter, then a square wave generator running typically running in the range of 10-40kHz chops the DC, which is then rectified and

Noise blanker IMD can cause multiple decodes based on the frequency of repetition rate of your impulse noise. 73 -Jim NU0C "Martin G0HDB" <marting0hdb@...> wrote:

So this was sarcasm. I was suggesting that over-driving the pa would cause IMD constructs. I don't really understand the difference between digital modes. Just keep the ALC below zero. -- 73 Phil

That is a great article. Thanks. -- --w8lvn--

Can we agree that this discussion is futile. There are numerous reasons why this happens. 73 Phil GM3ZZA. -- 73 Phil GM3ZZA

On Sat, Feb 22, 2020 at 07:57 PM, Philip Rose wrote: So, I see the same signal being decoded several 100 Hz apart on 20m, is this a Doppler effect from what is probably the busiest air route in

No it is an AM due to full wave rectification, poor DC filtering and overdriving power amplifier, at least in most cases. 73, Reino oh3mA

Ok Next step is plug the ct62 cable into the auxiliary cat port on the yt100. At this point you should have the hardware connected Are you trying to control the rig via wsjt x or is something like

So, I see the same signal being decoded several 100 Hz apart on 20m, is this a Doppler effect from what is probably the busiest air route in Europe? I still contend it's over-driving of transmitters.

Hi Phil, Of course it does not. There are multiple reasons for additional sidebands such as Doppler shift due to airplane reflections, if also the direct signal is available (multipath). Then

On Sat, Feb 22, 2020 at 07:48 PM, Bill Lederer wrote: So that would be multipath then likely?Yes, it's multipath but with the indirect or secondary path frequency-shifted because of the Doppler

Jim, I didn't say that, I quoted someone saying that. Hence the > leading the line. And I agree with you it might be as much a problem in the receiver path as the transmitter path, the fact that only