Video Clips in KML Ham Radio QSO Maps

This post and the next will detail plans for ideas inspired by K4SWL, Thomas Witherspoon, of qrper.com. Thomas records all of his POTA activations, and then posts them on YouTube like the one below.

Meanwhile, Google Earth Web has introduced(?) the idea of carousels (maybe just new to me) in their KML styles. A carousel allows multiple media containers, (videos, hthml, pictures, etc.), to be attached to a placemark. The result is a placemark that looks like the following

Here's the idea. What if a POTA video could be automatically split up into per QSO snippets using ffmpeg and then automatically added to kml QSO maps like the one below?

In that case, not only would you see the information in the marker above, but you'd be able to listen to the fluttering signal as it bounced of the aurora on its way to New Mexico!

Heck, the map could even include and elevation profile per QSO.

I think the technology exists already. The keyer for the Pico-W runs on Linux on a chromebook and outputs a UTC timestamp every time I send CW characters. That gives both callsigns and timestamps that could then be programmatically used to pull snips out of a video in a manner similar to the one I used to pull out bird freeze frames. I'd need to sync my video recorder to UTC time as well, but that shouldn't be too difficult! In principle... Kinda cool.

Next: The QMX!!!

Comments

More Cowbell! Record Production using Google Forms and Charts

First, the what : This article shows how to embed a new Google Form into any web page. To demonstrate ths, a chart and form that allow blog readers to control the recording levels of each instrument in Blue Oyster Cult's "(Don't Fear) The Reaper" is used. HTML code from the Google version of the form included on this page is shown and the parts that need to be modified are highlighted. Next, the why : Google recently released an e-mail form feature that allows users of Google Documents to create an e-mail a form that automatically places each user's input into an associated spreadsheet. As it turns out, with a little bit of work, the forms that are created by Google Docs can be embedded into any web page. Now, The Goods: Click on the instrument you want turned up, click the submit button and then refresh the page. Through the magic of Google Forms as soon as you click on submit and refresh this web page, the data chart will update immediately. Turn up the:

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

Now available as a Kindle ebook for 99 cents ! Get a spiffy ebook, and fund more physics The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems , there seem to be fewer explanations of the procedure for deriving the conversion, so here goes! What do we actually want? To convert the Cartesian nabla to the nabla for another coordinate system, say… cylindrical coordinates. What we’ll need: 1. The Cartesian Nabla: 2. A set of equations relating the Cartesian coordinates to cylindrical coordinates: 3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system: How to do it: Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables. The chain

The Valentine's Day Magnetic Monopole

There's an assymetry to the form of the two Maxwell's equations shown in picture 1. While the divergence of the electric field is proportional to the electric charge density at a given point, the divergence of the magnetic field is equal to zero. This is typically explained in the following way. While we know that electrons, the fundamental electric charge carriers exist, evidence seems to indicate that magnetic monopoles, the particles that would carry magnetic 'charge', either don't exist, or, the energies required to create them are so high that they are exceedingly rare. That doesn't stop us from looking for them though! Keeping with the theme of Fairbank[1] and his academic progeny over the semester break, today's post is about the discovery of a magnetic monopole candidate event by one of the Fairbank's graduate students, Blas Cabrera[2]. Cabrera was utilizing a loop type of magnetic monopole detector. Its operation is in concept very sim

Copasetic Flow

Search This Blog