Why is 20m band waterfall showing signals every 50 kHz?

7 Answers 7 ... Those equally spaced lines in the waterfall are very likely from EMI/RFI noise generated by modern electronics, often harmonics ...

strange 20 meter signals - RadioReference.com Forums

1. If it is a continuous carrier, it cannot be 6 kHz wide. · 2. No radar can be a continuous carrier, radars have to pulse so they can "hear" the ...

Can you help Rob identify two mystery signals on the 20 meter band?

There are two different signals to differentiate in this image. The signal I observed two weeks ago and today is 10 kHz wide and today spans ...

Okay so what the heck are these sweeps on 20m that make my ...

Okay so what the heck are these sweeps on 20m that make my waterfall look like Missile Command all the time? ... Pulses maybe 20-50 kHz ...

Interesting signals on the 20 meter band: Probable Radio Habana ...

The most likely source of the interference is the transmitter on 13700 kHz as it is symmetrically flanked with spurious signals above and below, spaced about ...

Hot answers tagged 20m-band - Amateur Radio Stack Exchange

Why is 20m band waterfall showing signals every 50 kHz? ... I notice you said 50 KILOhertz, not 50 hertz. Big difference, folks! You're picking up interference ...

what is this noise on the 20m band - about 14.3MHz - Groups.io

It sounds like a very unstable or noisy oscillator, which it could be as the RTL dongle uses 28.8MHz and 14.4MHz as clock signals.

UNID pulse noises, 50 kHz wide, 20M & 40M ham bands, 7/29 2120 ...

Recently there was a bizarre QRM phenomenon that hit the 20M and 40M ham bands, a constant pulse/beep heard nationwide in the US. The signals were around 50 ...

Waterfall Displays Explained: Ask Dave #21 - YouTube

Ham HF Bands: Introduction AD#29. David Casler Ask ... 50K views · 10:14 · Go to channel · What is a Waterfall Display and what does it show me?

I can't figure out what this is on 20M...or why it's happening

So I did that video to show the Lime operating in the 20m band. The ... As we only have 12bits of data loud signals elsewhere in the band ...

Tracking down interference in the 2m amateur band - QRM.GURU

... 50km away, some local LAN noise, and the offending QRM. The waterfall shows it drifting all over the band. The interference was heard as low ...

Unidentified Signals - Signal Identification Wiki

All found on the 20m band. ... Cannot hear it myself - anyone else have better ears? 4.723 MHz, 4 kHz, Unknown Numbers Station 4p723 Waterfall.PNG. Unknown Out of ...

Help identifying broadband noise source - FlexRadio Community

I'm a bit puzzled by the apparent quantization shown in the signal across the band. ... Kevin, I can't see any pattern on the waterfall in your ...

Is it time to start screaming for ops to use their waterfall?

... KHz) higher on the waterfall than my TX position shown. ... Here in central Florida the 3.5 kHz waterfall is so jammed with FT8 signals I ... Tune e.g. on 20m band ...

Panadapter Display, Waterfall, and Bandscope

The 20m band is 450 kHz wide. So it's not possible to create a panadapter display from the audio output of a typical ham transceiver. Some ...

G90 SDR 20 Watt HF Radio - Connect Systems

The display below shows a typical SSB signal that was modulated at 3 KHz with a modulation index of 50%. Note the suppressed carrier and only a single side band ...

What is a Waterfall Display and what does it show me? (040)

We used to be totally deaf to anything happening on the band; we were only aware of what we were currently tuned to. This made it tough to ...

IC-905 | Products | Icom America.

... waterfall display are built in. The real-time ... AMPS hole pattern and 1/4-20 tripod mount for controller unit; Two call channels for each band (2×6 band) ...

ft-2000 100 watt & ft-2000d 200 watt hf+6 transceivers - Yaesu.com

The result is sparkling, clear audio that will be the envy of everyone else on the band! Outstanding Strong-Signal-Handling Capabilities Derived from the ...

FT8 - Signal Identification Wiki

FT8 ("Franke-Taylor design, 8-FSK modulation") is an extremely-weak-signal, digital, narrow bandwidth (50 Hz), QSO-only communication protocol used by amateur ...