R de Groot

Citizen-Research, Radiowaves, Frequencies, Cycles
Space, Sun, Earth, Physics, Biology, Geology, History

[R de Groot @Rdegroot11]

@zone_astronomy This channel is BS , Nonsense, Ai or pure Lies , do not believe anything you read.

[R de Groot @Rdegroot11]

@zone_astronomy This channel cant be trusted , allmost every post is either BS or contains Ai, or is pure Lies , It should be removed/blocked from X

[R de Groot @Rdegroot11]

@LE_F4GXS Looked up the iF-frequencies of your FT-857
Conclusion: most likely DX-Propagation over water
from Portuguese FM-Broadcast Band stations
on the Northern-Coast of Portugal.
Not 100% shure, since i dont have enough info.

[R de Groot @Rdegroot11]

@LE_F4GXS 1) What language ? .. Portuguese ? 2) Are you close to Portugal ? ... 3) What times ? 24/7 ? ... 4) Whats the RX iF frequencies of that transceiver ? ... Suggestion: do some math or have a second widebandreceiver (incl FM-broadcast band) and see if same signal is there.

[R de Groot @Rdegroot11]

@bcl_ml You change the frequency (145.000) but the s-meter does not react with it and stays at the same level , how is that possible ... either this is not a real working unit ... or you have wideband interference. i guess it's a dummy without real reception.

[R de Groot @Rdegroot11]

@RadioHacking @RadioHacking So this is the reflection , and codar station itself to far from you ? on this websdr https://t.co/Rdz66NVN4P 13.5 Mhz AM, i can hear both sides, tune to the center and hear the sound of the "ping-pong" , 73's

[R de Groot @Rdegroot11]

@ei2ip 73's

[R de Groot @Rdegroot11]

Same lightning of today.
Signature can be seen all the way up to 145 Mhz .
Avg distance from RX to lighting 100 Km's.

[R de Groot @Rdegroot11]

Video + Sound of a Radio-Signature of local lightning
Horizontal lines all the way from 0~30 Mhz (and higher)
The closer the more higher frequencies, sometimes up to 400 Mhz.
Lower frequencies can be received 1000's of km's.

[R de Groot @Rdegroot11]

In this case i used Blitzortung + Twenthe WebSdr
Both are online so there's delays and not allways synch.

Here's a website that shows the types of discharges
1) Positive, Cloud > Ground
2) Negative, Cloud > Ground
3) Cloud > Cloud
https://t.co/a8Yg08X9ex

[R de Groot @Rdegroot11]

@jvierine @Nature @UiTNorgesarktis @Google @ucboulder TEC is normally measured using fixed gnss receivers, mobile receivers will have reflections & delays & more unwanted effects, which also vary over time ... so the proof is in the pudding ... What about detecting meteors (plasma-tails which reflect) ?

[R de Groot @Rdegroot11]

@ea4eoz @dcardenosa @RedSpmn @Josep_Trigo Turns out it was no meteorite but a burning cloud of debris from a returning Starlink-Satellite or Russian Kosmos rocket, perfectly matching the signature in that other pic showing the full signature (Starlink-debris) see how that looks in video below:

[R de Groot @Rdegroot11]

@EchoRadios @Echoradios , Liars, when the networks go,it goes down too, cause it is a stupid phone with a push to talk button , a POC Push Over Cellular , also everything on a cell netw gets traced cause it's the basics of how the network knows what tower to use ... liars scammers.

[R de Groot @Rdegroot11]

@SunWeatherMan What radioburst ? The usual 10.7 cm (2800 Mhz) ... or what other frequency ?

[R de Groot @Rdegroot11]

@Rowan_Wildrose @ReedTimmerUSA My question is what type of sensor (Airpressure, Windspeed ?) ... And how you gonna map it (builtin GPS ? )

[R de Groot @Rdegroot11]

@dcardenosa @RedSpmn @dcardenosa, Video with sound : Starlink burning up, 10~100 km's wide cloud of debris , Each piece reflects slightly different causing a fuzzy cloud of dopplersigs, long lasting, no sudden desintigrations, or big changes, exactly what we see in that pic of @RedSpmn

[R de Groot @Rdegroot11]

Meteor Reflections using Graves @ 143.050 Mhz
Rx in Amsterdam 560 km from Dijon
RX: RSPduo, Ant: Comet Vert/Omni 6dB, Height: 50m
Screens L>R: Row-1: Wideband, Medium, Detail
Row-2: Online SDR Camras and ADSB for verification
Audio: Stereo, Squelch=On
@dcardenosa @RedSpmn

[R de Groot @Rdegroot11]

@dcardenosa @RedSpmn Remarkable, the detailed radio-signature actually looks the same as the cloud in the optical-video, easy to recognize ... First time i have seen such radio-signature, no Starlink-debris or Rocket-debris signature can be found on internet, there's only a few from in orbit.

[R de Groot @Rdegroot11]

@dcardenosa @RedSpmn @dcardenosa , Starlink burning up, 10~100 km's wide cloud of debris , Each piece reflects slightly different causing a fuzzy cloud of dopplersigs, long lasting, no sudden desintigrations, or big big changes ... exactly what we see in that pic of @RedSpmn