Copasetic Flow

While researching the Beverage antenna which was tested in part at Otter Cliffs Naval Station, I came across an interesting article in Popular Science from 1922 about the inventor of the crystal detector, George W. Pickard. It turns out that OM Pickard was at the Blue Hills Observatory in Milton Hills, MA working on the apparently age-old problem of global climate change when he heeded the call of the Smithsonian Institution to experiment with kites to determine the dependence of radio propagation on the height of the transmitting aerial. Incidentally, at the time, it was thought that gathering a sufficient amount of data to prove or disprove the hypothesis of global climate change would take the work of 'countless generations'. In the same issue, there are articles about the 'dwindling supply of gasoline' and charging batteries using windmills.

I saw an issue in the last two days with app engine that took me awhile to fix. I was saving pictures using the 'Snipping Tool' in Windows 7 as .png files and then uploading them to my Google app engine site. The pictures were subsequently not available on the site. I was never able to make the pictures available. However, after pasting pictures into Microsoft Pain on Windows 7 and then saving them as .png files and uploading to my Google app engine site, they became available online. I don't know what causes the issue, but it seems easy enough to avoid once it's known. Have fun!

First, congrats to KK4CDL! He passed his extra class exam with an FB 98%! A new help topic has been added to the extra class exam about the RLC resonance frequenc y. If you have any feed back, it would be greatly appreciated either here, or at hcarter333@gmail.com

A new help topic on gray-line propagation has been added to the extra class practice exam . Any feedback would be very appreciated. The ham radio practice exams have been updated again. There was a bug that was causing some tests to hang up on their last question. It's fixed! The figure E5-2 was missing, and has been added to the tests. If you spot anything else, please contact me at hcarter333@gmail.com

The restoration effort to save Tesla's last existing laboratory in Shoreham, NY got a mention in RASL #10. To learn more about what's going on and how you can help go to: http://teslasciencecenter.org/about.html There will be a conference at Brookhaven National Laboratory on Saturday November 5th to support and raise awareness for the effort. If you're interested, you can find out more at: Conference Call for Papers About the Tesla Science Center We're also working on setting up an amateur radio special event station to transmit from somewhere near Wardenclyffe that day. Any interest from the hams?

The Element 5 practice exam is ready to go at http://copaseticflows.appspot.com/hamtest . The grid below shows which elements are required for the different FCC Comercial Operator Licenses.

The flying rockmite that uses official Dash! dogbone antenna insulators is featured on Dashtoons.com this week! Jeff K1NSS also waxed poetic about wire antennas. Check out the awesome cartoon !

The Element 3 practice exam is ready to go at http://copaseticflows.appspot.com/hamtest . The grid below shows which elements are required for the different FCC Comercial Operator Licenses.

I'm adding the FCC commercial license exams to the free exam site. So far Element 1 is up. This element is required for the GROL as well as other commercial licenses. To find it go to: http://copaseticflows.appspot.com/hamtest and click on the Comm E1 tab on the left of the exams. Please let me know about any feedback you might have at hcarter333@gmail.com

The new General class question pool, (effective July 1, 2011), is available one the free practice exams at: http://copaseticflows.appspot.com/hamtest

On May 10th four more representatives cosponsored HR 607 which impacts amateur radio frequency allocations in the 70 cm band . They are: Rep Wittman, Robert J. [VA-1] - 5/10/2011 Rep Mica, John L. [FL-7] - 5/10/2011 Rep Buchanan, Vern [FL-13] - 5/10/2011 Rep Reichert, David G. [WA-8] - 5/10/2011 If you're an amateur radio operator from one of these districts, you might want to write your representative .

Sounds like the recent iHAB-4 launc h went well! Here's a video the iHAB-2 launch we helped out with:

I made my first QSO with WD8AFB of Orlando, FL with the new Rockmite 20 yesterday. That's 974 miles from Sound Beach, NY on about half a watt. The antenna design is a little different. Instead of running coax from the radio up to the antenna, the radio is part of the antenna.  A hijacked length of cat-5 ethernet cable brings the control and power lines down from above. I used Dashtoons brand antenna insulators as quick disconnects so I can take the radio down during our frequent rains here on Long Island. The keyer was a bit primitive for this first QSO: Map of the QSO:

The new batch of goslings hatched out here! Scroll down for a video!

It seems like some of the topics for the US extra class exam would be better served by help videos instead of long detailed written help pages. So, here's the first video help topic for Copasetic Flows free ham radio practice exams. It covers direct digital synthesizers. Please let me know what you think and what could be improved or changed. Video seems to have been in the air for ham radio this weekend. Here are some of my favorite ham radio blogs that also posted videos this weekend: SolderSmoke: WSPR the Movie G4ILO: Installing APRSISCE/32 W2AEW's Dorkage Blog: Delayed Timebase operation example and GOKYA: GB0CMS, Caister Marconi Station

This was a walk near Sound Beach, NY The Waves: The walk:

Lots of cool stuff! This lecture has nice clean explanations of: 1. How a heat engine diagram is used 2. What adiabiatic means, (doesn’t exchange heat outside the system) 3. Why work examples are inexact, (they’re path dependent) 4. van der Waals equation of state NOTES: Adiabatic: No transfer of heat between the system and the outside world. Can be reversible and not. Isobaric: constant pressure Isothermal: constant temperature triple point of water is used as a reference point for the Kelvin scale because it is the same everywhere. Ideal gas law only holds for a very small range. 21:00 van der Waals equation of state derivation of van der Waals, b is the volume consumed by the hard sphere molecules. a is the attractive force that slightly reduces pressure. a is divided by the molar volume squared because it is more likely to affect things in smaller volumes and less likely in larger volumes. 31:00 Convention in the definition of work. The environment compressing the gas is...