Обзор HackRF Portapack

Буквально неделю назад один из моих читателей оказал мне доверие и предоставил устройство для обзора - HackRF Portapack . Это по сути портативная версия HackRF не требующая ПК для решения радиоинженерных задач. Получив это устройство оно показалось мне достаточно интересным и много о чем можно было бы рассказать, в продолжение темы про HackRF. Я обзорно расскажу о том, из чего это устройство состоит, какие прошивки предлагаются для устройства (их оказалось несколько), что предлагает это устройство для инженеров и радиолюбителей и рассмотрим спектр возможных применений. И в присущей мне манере и с исчерпывающем повествованием я поделюсь с вами своим опытом использования данным устройством. Всем интересующимся - добро пожаловать под кат!

https://habr.com/ru/companies/beget/articles/954378/

#HackRF #SDR #HackRF_Portapack #RF #Mayhem #GNU_Radio #H4M #IQ_Replay

Обзор HackRF Portapack

Буквально неделю назад один из моих читателей оказал мне доверие и предоставил устройство для обзора - HackRF Portapack . Это по сути портативная версия HackRF не требующая ПК для решения...

Хабр

Issue #226 of the RESTRICTED FREQUENCY newsletter dropped a few days ago.

[...]

https://ganzeer.today/issue-226-of-the-restricted-frequency-newsletter-dropped-a-few-days-ago

Шальский, Республика Карелия| Shalsky, Republic of Karelia, 2013.
(c) Artem Lezhepekov

#closeuprussia #artemlezhepekov #rf #photography #photo

@rf

Any #RF experts in here? Ordered 10 #GNSS / #GPS antennas from Digikey, 5 of them look like the one on the top, but the other 5 have a notch that doesn't look right. Could it be the result of some kind of antenna adjustment/calibration, or should I open a ticket?

@zl2tod @poleguy @cgervasi @SpaceLifeForm

Gulls are causing interference
My radio they do foil
Flocks flying in circles
Are like a magnetic inductor coil

Sending out all kinds of frequencies
So I cannot hear
What kind of food to order
And what kind of beer

CQ CQ CQ they call
While looking for a meal
Hoping for a radio contact
Or a sandwich they can steal

#rf #rfinterference #gulls #seagulls #poem (human poem)

Got a new toy. tinySA Ultra+ ZS407

This replaces the Tektronix SA2600 that has been on my bench for years but belongs to my employer.

Own your own tools, right? Best time to buy them is when you are still employed, right?

https://www.tinysa.org/wiki/

#TinySA
#electronics #RF #EE

I discovered a new kind of sad ham today. It’s the kind where the x-ray tech at the ortho urgent care doesn’t remember any of the radiation specifics and his colleague at the front desk doesn’t want to chat about this major change either 😭😭😭

Alt text is a transcription of why it’s supposed to be cool to ditch the lead threads.

#SadHam #RF #radiation #xrays

Краснохолм, Оренбургская область | Krasnokholm, Orenburg region, 2018.
(c) Sergey Trapezin

#closeuprussia #sergeitrapezin #rf #photography #photo

@rf
The discontinuity capacitance and the effective position of a shielded open circuit in a coaxial line (1967). https://archive.org/details/somlo1967/ https://zenodo.org/records/17015632 This Somlo paper contains essential reference data of the parasitic capacitance of a coax open circuit, calculated by a CDC 3600 mainframe to 5 significant digits. But its journal is defunct, so it's not indexed anywhere. Posting it here for Web visibility. For a step-by-step guide on how to use it, see Appendix 4 of my blog post. #electronics #rf
The discontinuity capacitance and the effective position of a shielded open circuit in a coaxial line, by P. I. Somlo : P. I. Somlo : Free Download, Borrow, and Streaming : Internet Archive

P. I. Somlo, “The discontinuity capacitance and the effective position of a shielded open circuit in a coaxial line,” Proceedings of the Institution of...

Internet Archive
🎉 Great being part of PraSec in Prague for the 3rd time! Amazing community
👥 Shared RF Swift presentation on rapid RF analysis
📡 Slides: https://penthertz.com/publications/
#PraSec #RF #Security