Hacker Public Radio podcast

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This show has been flagged as Clean by the host. Intro How I know BSD Very minimal NetBSD usage I'm am leaving out Dragonfly BSD Previous episodes Several by Claudio Miranda and others - check the tags page. hpr3799 :: My home router history hpr3187 :: Ansible for Dynamic Host Configuration Protocol hpr3168 :: FreeBSD Jails and iocage hpr2181 :: Install OpenBSD from Linux using Grub History and Overview https://en.wikipedia.org/wiki/History_of_the_Berkeley_Software_Distribution The history of the Berkeley Software Distribution began in the 1970s when University of California, Berkeley received a copy of Unix. Professors and students at the university began adding software to the operating system and released it as BSD to select universities. https://en.wikipedia.org/wiki/Comparison_of_BSD_operating_systems Comparisons to Linux Not better or worse, just different. BSD is a direct descendant of the original UNIX Not distributions - Separate projects with separate code bases. Permissive vs Copyleft One Project vs Kernel + User land Most Open Source software is available on BSD ports and packages Network Devices and DISKS will have different naming conventions. BE CAREFUL Distinctives FreeBSD Probably most widely used Base OS Commercial products Tightly integrated with ZFS Jails OS for Firewall appliances - PFSense and Opensense OpenBSD Focus on Code Correctness and Security Often First to develop new security methodologies - ASLR and Kernel relinking at boot Home of OpenSSH, ... Base includes Xorg and a minimal Window Manager The Best docs - man pages NetBSD Supports the most platforms pkgsrc can be used on any UNIX like. How I use BSD Home Router Recently migrated from FreeBSD to OpenBSD Better support for the cheap 2.5G network adapters in Ali express firewalls Workstations OpenBSD Dual boot laptop - missing some nice features - Vscode and BT audio OpenBSD for Banking NAS FreeBSD Was physical by migrated to Proxmox VM with direct attached drives Jails for some apps ZFS pools for storage My recommendations Router OpenBSD - Any BSD will work Opensense - similar experience to managing DD-WRT Thinkpads - OpenBSD Other laptops / PC - FreeBSD desktop focus derivative. ghost or midnight Servers/NAS FreeBSD ZFS Jails BSD is worth trying Dual booting is supported but can be tricky if unfamiliar. r Provide feedback on this episode .…

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HPR4387: Did she say she flew light aircraft?!

1 day ago

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This show has been flagged as Clean by the host. In this nostalgic episode, I share my personal experiences riding and flying light aircraft during the 1980s and 1990s. From the hum of a Cessna engine to the grace of a Bonanza slicing through the clouds, it’s a journey through the skies filled with stories of daring, faith, and the wonder of flight. Topics Covered: Light Aircraft Overview General insight into what qualifies as light aircraft and why they’re beloved by private pilots and hobbyists. Light aircraft – Wikipedia Flying in a Cessna Memories of flying in various models of the iconic Cessna—dependable, nimble, and a staple of personal aviation. Cessna – Wikipedia Bonanza Adventures Experiences flying in the Beechcraft Bonanza, known for its sleek design and comfort—especially memorable during cross-country flights. Beechcraft Bonanza – Wikipedia Missionary Aviation Stories Recollections of missionary pilots and their vital roles in reaching remote areas, often relying on small aircraft to deliver aid, supplies, and hope. Missionary aviation – Wikipedia Aviation in the 1980s and 1990s A look back at the culture of general aviation during this era—before GPS was common, when flight was guided more by instinct, skill, and charts on your lap. General aviation – Wikipedia Listen now on your favourite platform and take to the skies with me! Provide feedback on this episode .…

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HPR4386: Silly Tavern Spicy Roll Play

3 days ago

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This show has been flagged as Explicit by the host. https://jamboree.rmccurdy.com Profiles top 100 M/F https://github.com/freeload101/SCRIPTS/tree/master/NODE (Click the horde tab and use my key) https://agnai.chat/settings?tab=0 https://lite.koboldai.net https://sillytavernai.com says says "SillyTavern is an advanced, locally-deployed interface designed to facilitate deep, interactive role-playing experiences. Built on large language models (LLMs) such as Claude and Gemini , SillyTavern allows users to engage with custom-built characters that they can mold according to their own preferences. The tool was created by Cohee , RossAscends , and the SillyTavern community , evolving from an earlier version of TavernAI. Its core function is to serve as a front-end interface for AI models via API calls, which means it doesn't require users to host complex models themselves." Provide feedback on this episode .…

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HPR4385: Cable un-managment lol

6 days ago

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This show has been flagged as Explicit by the host. Some tips that I use for cable management, and keeping a track of stuff. Featuring the elusive "charge master 9000 NGX Pro Enterprise Edition". Links https://en.wikipedia.org/wiki/Twist_tie https://en.wikipedia.org/wiki/Tweezers Provide feedback on this episode .…

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HPR4384: Browser and dedicated apps on the mobile phone

7 days ago

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This show has been flagged as Clean by the host. Recently I had a discussion on Mastodon about mobile phone applications. The other person stated "the web belongs to web browsers". I agreed to it as a general good approach. Some dedicated apps cannot be substituted with the browser, but some can. I do not have so many apps myself, but anyway that statement got me to review a couple of my apps how they works in the Firefox browser. And actually, I could delete three apps and all functions I needed from them can be managed from Firefox. Beside traditional bookmarks, those pages can be pinned to the Firefox start page or placed like a webapp on the mobile screen, so they look like an ordinary app. Using the Firefox browser makes it easier to control the privacy. In addition to what is built into Firefox, I currently also have the two extensions, Privacy Badger and uBlock Origin in my Firefox browser. Beside privacy and in general to be somewhat more in control, this approach also reduces the number of apps to keep updated and reduce storage need. Sometimes apps are necessary of otherwise beneficial. But I think the traditional browser should not be forgotten also on the smart mobile phone. Provide feedback on this episode .…

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HPR4383: Changing font in Arch Linux (Wayland)

8 days ago

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This show has been flagged as Explicit by the host. font selection Nerd Fonts - Iconic font aggregator, glyphs/icons collection, & fonts patcher Programming Fonts - Test Drive font installation install font package % yay -Sy $font_package update font database % fc-cache --force --verbose verify available fonts % fc-list | grep $font_name change font in application configs e.g.: alacritty emacs sway tofi Provide feedback on this episode .…

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HPR4382: Understanding Antenna Gain and the Decibel scale

9 days ago

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This show has been flagged as Clean by the host. Power Measurement and Antenna Gain HPR show by Paulj, May 2025. 1.0 Power expressed in dB (also written as dBW) Power P dB = 10 . log 10 P Where P is the power expressed in Watts. 2.0 Power expressed in dBm Power P dBm = 10 . log 10 P Where P is the power expressed in milliwatts. 1W = 1000mW Power P dBm = 10 . log 10 1000mW Power P dBm = 30 dBm so: 0 dB = 30 dBm 3.0 Power expressed relative to an isotropic antenna - dBi An Isotropic antenna is an theoretical ideal antenna which radiates equally in all directions. Imagine the antenna is at the centre of a sphere, the signal strength at the surface of the sphere is equal at all points. The gain of an isotropic antenna is defined as 1, meaning: 10 dB = 10 dBi 4.0 Power expressed relative to a half wave dipole antenna - dBd The simplest practical antenna is a half wave dipole antenna, where each of the two legs is a quarter wave length long. The feed is at the centre, and the two legs are generally horizontal, and aligned away from the feed point 180 degrees apart. The dipole antenna exhibits gain perpendicular to the legs. The maximum gain is 1.64 times the isotropic antenna - a gain of approximately 2.15dBi. The gain off the ends of the dipole is much lower - the total power radiated by the antenna can not exceed the power being input, so if there is more radiation (gain) in one direction, there must be a corresponding reduction in a different direction. So: 2.15 dBi = 0 dBd 5.0 Effective Radiated Power - ERP and EIRP ERP and EIRP are both used to indicate the power achieved using an antenna.ERP compares the antenna performance with a dipole, and EIRP compares the performance with an isotropic antenna. So, the ERP is the power which would need to be fed into a dipole antenna, to get the same effect in the direction your antenna is pointing. EIRP is the power required for an isotropic antenna to gain equivalence. Practical example: My KX3 can transmit 15W. using the formula above, this is 11.77 dB. If I attach a Yagi-Uda antenna with a gain of 10dB, the ERP is 21.77 dB. Using the formula above, from this number you can calculate that this is the equivalent of 150.3142 Watts ERP. To understand the EIRP, we need to add 2.15 to the 21.77 dB value, giving 23.92 dB EIRP . Again, converting to actual power gives 246.515 Watts EIRP. If you are comparing antennas, make sure the same units are being used in all cases (either EIRP or ERP) - some sellers will use EIRP, because the values are higher! Check your licence conditions. Power output limits are often at the antenna, and don't include antenna gain. You can set your transmitter to output sufficient power to overcome any feed line losses, and present up to the power permitted to the antenna. A good antenna can then be used to get the transmitted power out and across the world. For feedline loses, the value is given in dB per 10 metres. For example, RG58 is 2dB / 10 metres (at 100MHz - choose the right feeder coax for your target frequency!). If you have 15 metres, then you will have 3 dB feeder loss, so half of your transmitter power will be lost in the feed line. If you know this and your transmitter can output more, then you can increase the transmitter power accordingly. So for 25W at the transmitter, with 3dB loss in the feeder, you can set the output to 50W. Some transmit power limits are set in ERP or EIRP, so you will need to calculate back from the antenna to see the maximum allowable transmitter power, to stay within the rules. 6.0 Combining values One result of the use of dB is that you can add the values together to understand the whole system gain. So, with our example above, if we have 11.77 dB of output power, then -1 dB insertion loss for a bandpass filter, -3 dB loss for the feeder, and 5dB gain on the antenna, the overall ERP is 12.77 dB. You can convert this back to Watts, to get 18.92W ERP. 7.0 Links Dipole information Yagi-Uda information Wikipedia information on Decibels Wikipedia information on ERP and EIRP Wikipedia information on Antenna Gain ERP & EIRP calculator from M0UKD Provide feedback on this episode .…

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HPR4381: What Omni-Instantness Makes To My Brain and Your Brain?

10 days ago

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This show has been flagged as Clean by the host. PROBLEMS: Infinite feeds Notifications Everything virtual...? I hope the program be conducive to make you think straightly about this; short and long term. Links cited: Alzheimer’s Facts and Figures: https://www.alzra.org/alzheimers/facts-and-figures/ How Exercise Protects Your Brain’s Health: https://health.clevelandclinic.org/exercise-and-brain-health Switching off: Sweden says back-to-basics schooling works on paper: https://www.theguardian.com/world/2023/sep/11/sweden-says-back-to-basics-schooling-works-on-paper Brazil restricts use of smartphones in elementary and high schools: https://edition.cnn.com/2025/01/13/americas/brazil-restricts-smartphones-in-schools-intl-latam/index.html The Brazilian Classroom: Same same, but very different: https://teachingacrossborders.ucalgaryblogs.ca/the-brazilian-classroom-same-same-but-very-different/ Provide feedback on this episode .…

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HPR4380: Isaac Asimov: The Rest of Asimov's Foundation Stories

13 days ago

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This show has been flagged as Clean by the host. Isaac Asimov began with the Foundation series, but then added to it. Early on, he wrote what are called the Empire novels which are prequels to the rise of Trantor. Then he decided to tie his Robot series into his Foundation series. So now we will take a look at these remaining novels. Links: https://en.wikipedia.org/wiki/Galactic_Empire_series https://en.wikipedia.org/wiki/The_Stars,_Like_Dust https://en.wikipedia.org/wiki/The_Currents_of_Space https://en.wikipedia.org/wiki/Pebble_in_the_Sky https://en.wikipedia.org/wiki/Robots_and_Empire https://www.palain.com/science-fiction/the-golden-age/the-rest-of-asimovs-foundation-story/ Provide feedback on this episode .…

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HPR4379: Mapping Municipalities' Digital Dependencies

14 days ago