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Sliderule Emulator with Equation Solver

✇AmateurRadio.com
Par :Richard AA4OO
9 février 2026 à 12:42

Hemmi/Post 1460 Versalog Slide Rule

A classic slide rule replica implemented in JavaScript. All scales are programmatically drawn from reverse-engineered mathematical equations.

Open in Full Screen →

How to Use

  • Drag the rule or cursor with your mouse
  • Scroll with mouse wheel to zoom in/out
  • Right-click on cursor or scale to enter values:
    • Numbers: 3.14
    • Constants: pi, e
    • Degrees: 2:30:26
  • Use the Equation feature to solve mathematical expressions
  • Toggle Markings and Display options in the control panel

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Does POTA’s Selection of U.S. Park Entities Shortchange Urban Hams?

✇AmateurRadio.com
Par :Frank K4FMH
8 février 2026 à 22:40
Administrators Say They Will Not Include Local-Area Parks On a regular Saturday-morning Zoom meeting of hams a few months ago, a participant in Los Angeles asked the group, “Why can’t I activate one of my local parks and have it count in POTA?” Some of those in attendance echoed the sentiment. Based on that question, […]

Amateur Radio Weekly – Issue 407

✇AmateurRadio.com
Par :Cale K4HCK
7 février 2026 à 12:00
open-hamclock-backend aims to keep HamClock ticking A group of Ham Radio operators have stepped up to keep HamClock operating beyond its scheduled sunset in June. open-hamclock-backend OpenHamClock A real-time Amateur Radio dashboard for the modern operator. OpenHamClock Weekly Wednesday FSQ night We will help stations new to the FSQ mode practice with relay and trigger […]

Amateur Radio Weekly – Issue 406

✇AmateurRadio.com
Par :Cale K4HCK
31 janvier 2026 à 12:00
Hamvention 2026 theme and logo Our theme for Hamvention 2026 is “Radio Adventure!” Hamvention HamClock project to sunset June 2026 The HamClock project will no longer receive updates. Amateur Radio Daily Ham Radio isn’t growing and it’s all your fault Hang around the Amateur Radio community for a few decades and its many peccadillos will […]

A Snapshot of U.S. POTA Sites, Activators, and Activations

✇AmateurRadio.com
Par :Frank K4FMH
26 janvier 2026 à 21:04
We often read that POTA is the “fastest-growing activity in U.S. amateur radio.” I’ve said it, too. Several times. I think satellite operations are a distant second growth activity. But do we actually know much about POTA activity growth through empirical data? My impressions are based on guesstimates from data on Canada where I analyzed […]

Amateur Radio Weekly – Issue 405

✇AmateurRadio.com
Par :Cale K4HCK
24 janvier 2026 à 12:00
Amateur Radio operators in Belarus arrested, face the death penalty The arrests are an extreme attack on what is most often a wholesome hobby. 404 Media What did Belarusian “Amateur Radio spies” actually intercept? Enthusiasts were able to listen in on both the military and Lukashenka’s security service. BELSAT What’s new at Digital Library of […]

Ham College 133

✇AmateurRadio.com
Par :George W5JDX
23 janvier 2026 à 23:59
Ham College episode 133 is now available for download. Technician Exam Questions Part 20. T6C – Circuit diagrams: use of schematics, basic structure, Schematic symbols of basic components. T6D – Component functions: rectifiers, relays, voltage regulators, meters, indicators, integrated circuits, transformers, Resonant circuit, Shielding. This episode of Ham College (0:00-39:27) focuses on electrical diagrams and … Continue reading Ham College 133

My You Can Think of the Darndest Things While in a Hospital Bed…

✇AmateurRadio.com
Par :Frank K4FMH
23 janvier 2026 à 16:31
Listeners to the ICQ Podcast where I appear monthly as a Presenter probably heard me say that I was successfully treated for a highly aggressive prostate cancer (adenocarcinoma, Gleason 8) almost two years ago at the Mayo Clinic. While in Rochester for two weeks, I had a lot of time in bed recovering from the […]

Amateur Radio Weekly – Issue 404

✇AmateurRadio.com
Par :Cale K4HCK
17 janvier 2026 à 12:00
New 60-Meter frequencies available as of February 13 It’s a bit confusing, as different rules apply to different segments of the band. ARRL Using VOCAP to predict HF propagation This post goes deep into the technical choices we made to bring VOACAP — a serious propagation prediction system — to a simple web interface. DXLook […]

Ham College 132

✇AmateurRadio.com
Par :George W5JDX
16 janvier 2026 à 23:12
Ham College episode 132 is now available for download. Technician Exam Questions Part 19 T6A – Fixed and variable resistors, Capacitors, Inductors, Fuses, Switches, Batteries. T6B – Semiconductors: basic principles and applications of solid state devices, diodes and transistors. Ham College 132, titled “Technician Exam Questions Part 19,” focuses on topics T6A (Fixed and variable … Continue reading Ham College 132

2026 NAQP contest

✇AmateurRadio.com
Par :Mike VE9KK
11 janvier 2026 à 14:28
 The January NAQP is always a contest I look forward to. It starts at 2:00 PM local time, and my plan was to operate for about eight hours of the ten-hour event. This contest is always well attended, and with the maximum power limited to 100 wa...

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ICQPodcast Episode 474 – New Radio Shack Additions

✇AmateurRadio.com
Par :Colin M6BOY
11 janvier 2026 à 09:05

In this episode, we join Martin Butler M1MRB, Chris Howard (M0TCH), Frank Howell (K4FMH) and Leslie Butterfields (G0CIB) to discuss the latest Amateur / Ham Radio news. Colin Butler (M6BOY) rounds up the news in brief, and the episode's feature is New Radio Shack Additions.

We would like to thank our monthly and annual subscription donors for keeping the podcast advert free. To donate, please visit - http://www.icqpodcast.com/donate

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Amateur Radio Weekly – Issue 403

✇AmateurRadio.com
Par :Cale K4HCK
10 janvier 2026 à 12:00
Digital modes have already won Whatever your opinions about digital modes on HF the migration is undeniable. Pattern and Match LinHT: A Linux-based experimental SDR radio A beginner-friendly explanation of what LinHT is, how it works, and why Hams are talking about it. EvoHam The 52 Week Ham Radio Challenge – 2026 This is meant […]
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