To receive by #radio #reticulum #rnode #announces on #lora radio one needs to have the same 4 radio parameters as the announce: #frequency #bandwidth #spreadingfactor SF #codingrate CR
-> #meshchat permits any number of #rnode interfaces !
To hear the most announces, does it make sense & is it possible to set up several e.g. 5 #lora #radios with same frequency: 869.525 MHz
bandwidth: 250 kHz but
each with different SF & CR? Would one be able to receive more announces that way? Would it work?

A cycloidal pendulum - one suspended from the cusp of an inverted cycloid - is isochronous, meaning its period is constant regardless of the amplitude of the swing. Please find the proof using energy methods: Lagrange's equations (in the images attached to the reply).

Background:
The standard pendulum period of $2\pi \sqrt{L/g}$ or frequency $\sqrt{g/L}$ holds only for small oscillations. The frequency becomes smaller as the amplitude grows. If you want to build a pendulum whose frequency is independent of the amplitude, you should hang it from the cusp of a cycloid of a certain size, as shown in the gif. As the string wraps partially around the cycloid, the effect decreases the length of the string in the air, increasing the frequency back up to a constant value.

In more detail:
A cycloid is the path taken by a point on the rim of a rolling wheel. The upside-down cycloid in the gif can be parameterized by $(x,y)=R(\theta -\sin \theta ,-1+\cos \theta )$, where $\theta =0$ corresponds to the cusp. Consider a pendulum of length $L=4R$ hanging from the cusp, and let $\alpha$ be the angle the string makes with the vertical, as shown (in the proof).

Classic hp Hewlett-Packard Application Notes for Time & Frequency
http://leapsecond.com/hpan/list.htm

Old but useful HP application notes. Clear concepts and measurement techniques.

ＡＩ絵生成　Генерація зображень ШІ
ＡＩ絵生成ソフトで何処が失敗してるかと云えば、人間の体の構造や比率を充分学習させてないと云う点が大きい。
Основна помилка програмного забезпечення для створення зображень ШІ полягає в тому,

https://note.com/poison_raika/n/n501ac31af2f1

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ＡＩ絵生成　Генерація зображень ШІ
ＡＩ絵生成ソフトで何処が失敗してるかと云えば、人間の体の構造や比率を充分学習させてないと云う点が大きい。
Основна помилка програмного забезпечення для створення зображень ШІ полягає в тому,

https://note.com/poison_raika/n/n501ac31af2f1

<>

ＡＩ絵生成　Генерація зображень ШІ
ＡＩ絵生成ソフトで何処が失敗してるかと云えば、人間の体の構造や比率を充分学習させてないと云う点が大きい。
Основна помилка програмного забезпечення для створення зображень ШІ полягає в тому,

https://note.com/poison_raika/n/n501ac31af2f1

<>

The Fourier Transform is a mathematical operation that transforms a function of time (or space) into a function of frequency. It decomposes a complex signal into its constituent sinusoidal components, each with a specific frequency, amplitude, and phase. This is particularly useful in many fields, such as signal processing, physics, and engineering, because it allows for analysing the frequency characteristics of signals. The Fourier Transform provides a bridge between the time and frequency domains, enabling the analysis and manipulation of signals in more intuitive and computationally efficient ways. The result of applying a Fourier Transform is often represented as a spectrum, showing how much of each frequency is present in the original signal.

$$\boxed{{\displaystyle \boxed{{\displaystyle \hat{f}(\xi )={\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}f(x)e^{-i2\pi \xi x}\mathrm{d}x,\mathrm{\forall }\xi \in \mathbb{R}.}}}}$$

Inverse Fourier Transform:
$$\boxed{{\displaystyle \boxed{{\displaystyle f(x)={\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\hat{f}(\xi )e^{i2\pi \xi x}\mathrm{d}\xi ,\mathrm{\forall }x\in \mathbb{R}.}}}}$$

The equation allows us to listen to mp3s today. Digital Music Couldn’t Exist Without the Fourier Transform: http://bit.ly/22kbNfi

Mediterranean diet lowers COVID-19 risk, but its effect on symptoms and severity remains uncertain https://www.diningandcooking.com/1970743/mediterranean-diet-lowers-covid-19-risk-but-its-effect-on-symptoms-and-severity-remains-uncertain/ ##COVID19 ##inflammation #coronavirus #cough #Cytokine #Cytokines #diarrhea #diet #Fever #Fish #food #Frequency #Immunomodulatory #Mediterranean #MediterraneanDiet #Mortality #NasalCongestion #nausea #OliveOil #oxygen #pandemic #SARS #SARSCoV2 #SoreThroat #Throat #VitaminC

Either Spanish radio stations work with some funky frequencies or our car radio is having a meltdown.

#Radio ##Frequency #CarRadio #Spain

Master the fundamentals of #Time & #Frequency (T&F) #Networks!

See this unit in our brand new Optical Time & Frequency Networks (OTFN) eAcademy:

Introduction to Time & Frequency
You'll get an understanding of fundamental T&F concepts, including definitions, frequency standards, and timescales.

Trainers: Wojbor Bogacki and Krzysztof Turza (tag PSNC) and the Time and Frequency Networks Training Development Team

Course duration: 30 min

More information here: https://connect.geant.org/2025/02/19/new-learning-unit-in-the-optical-time-frequency-networks-eacademy-introduction-to-time-frequency

Master the fundamentals of #Time & #Frequency (T&F) #Networks!

This unit in our brand new Optical Time & Frequency Networks (OTFN) eAcademy will introduce you to:

Why Do We Need Precise Time?
You'll get familiar with the issues of time measurement, and see use cases where precise timing is essential.

Trainers: Wojbor Bogacki & Krzysztof Turza and the Time and Frequency Networks Training Development Team

Course duration: 30 minutes

More information here: https://connect.geant.org/2025/02/12/why-do-we-need-precise-time-your-learning-journey-into-optical-time-frequency-networks-starts-here

Alright.

Let's try this!

I'm going to give #Frequency a try.

Hit me up at @majorlinux@frequency.app!

FUN FACT: @frequency is based on a #Mastodon fork called #Decodon. It has the following modifications:

• All accounts are locked/private, meaning content is only distributed to followers
• Support for push notifications to Expo-based apps
• Pre-signed URLs for extra-secure storage of uploaded private media
• replies are treated more like comments and are filtered from the home feed
• circles (lists of followers you can address posts to instead of only followers) - cherry-picked from fedibird
• default “inner circle” for all accounts to get them started
• more control over logo and branding in email templates

Like #Frequency, Decodon is also made by @jesseplusplus.

EDIT: Turns out my initial assumptions were entirely incorrect. This is a small project and they are now aware of the issue.

Something I found about https://frequency.app: In violation of Mastodon's AGPLv3 license, Frequency does not provide any link to the source code for logged out users despite the fact that logged out pages (excluding the join/subscribe page) are still based on the Mastodon code.

#Pixelfed is rightfully getting insane amount of attention but what should also be getting attention is #Frequency check it out https://frequency.app/about #fediverse #opensocialweb #newsocial