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Blog Posts (24)

  • Stay safe - missing you all

    Hey All I hope you all had a fun and fabulous winter field day! Im missing everyone and wish I could have been there. Also, good luck with coming nor'easter! Although I am enjoying being in warmer climes I do love a good winter and wish I could be there for the snow, skiing and winter camping! Kate

  • This ain't yo mamma's AcuRite

    During my 15 years of work at SUNY Albany, among all the other projects I got to play with, my favorite was working with ASRC (Atmospheric Science Research Center). I made them a 24 foot Mini Maritime Mobil Weather Station. They would take it around the state measuring and recording dozens of air and water parameters adding a time and GPS stamp to every data frame. This is the heart of the system. All custom design and fabrication by me. The top section is the Campbell Scientific Data Acquisition Computer. The middle unit is the Gas Analyzer unit. This bottom unit is custom to route and regulate the gasses to be analyzed. About the only similarity with our AcuRites is the bubble level on top. The whirly gig and tail feathers we use to measure wind direction and velocity just wouldn't cut it. Here they use 3 ultrasonic transmitters and 3 receivers in a pitch - catch configuration. The electronics measures and analyzes the Doppler Shift of the 3 signals and generates 3 signals of data. An Orthogonal output, wind speed in the X, Y and Z axis! Now, we tie that in with a filtered air sample inlet, a thermometer probe, and a flight path turbidity unit. This is my design for an Equillibrator. Water is feed into the pipe on top. It comes out the nozzles as an atomized spray. The water accumulates in the cylinder. At a certain level, the blue float rises, opening up drain ports to keep a constant water level. The grey fittings on the top are for tubes to circulate gasses escaping from the water to the gas analyzer. On to bigger and better... We mount our equipment to the tower on the bow of an ocean going research vessel. After numerous trips around the state in the pontoon boat, they now set off for campaigns to the Caribbean, The North Sea, and the Southern tip of Chile to Seattle. With a TON of data, there is just one final destination. Antarctica!!!! So, here is the plan: Antarctica, even in the summer, is a very hostile environment! So, the closest we can get to these conditions for testing is SUNY's weather station on top of Whiteface, mid winter! This is nothing compared to the Rhime Ice buildups we expect on the cruise. We are going to test various heat tapes, including special insulated and heated tubings. The Weather station's outer wrap around balcony. Control central! (The roof leak can't be addressed until late spring!) Snowmobiles are the only way to get to some of the equipment. If your drive belt starts slipping, STOP! If you don't stop, IT WILL STOP EVENTUALLY!!! This is what is left of their sled when a contractor borrowed it and didn't stop. It took hours to cool off from the fire, in spite of the cold! No slipping drive belts here! Somebody caught the photographer. The guys for the Whiteface trip. The person in the center is a researcher visiting from Ireland, Dr. Brian Ward. The person in the dark jacket is Dr. Scott Miller. He is project leader, all around good guy, and a friend! A lot more info on Scott's project can be found here. Lots of pictures, charts and technical data. Enjoy, Jim K2BHM

  • Blow hard?!?

    The Beaufort Wind Force Scale is an extremely easy to use tool to assess weather conditions especially under field conditions. It is a well researched, scientifically based system that is endorsed by the National Weather Service for use by its Weather Spotters due to its extreme versatility under almost any conditions. Likewise many other agencies use it as well. I was trained in this by State of Maine for my Guide training, in multiple Search and Rescue classes, as well as in my US Forest Service Forest Fire Fighter training. US military uses it extensively. Likewise it is still used routinely in international shipping and aviation. It is extremely useful due to its ease of operations even when your batteries died, your wifi is down &/or your anemometer is frozen up. So useful that U.S. Air Force Combat Air Controllers (CAC), still use it to call in Air Traffic Control for complex air support operations for multiple planes and multiple drops of paratroopers and cargo from behind enemy lines. (Sorry guys, but Marine motto of "First In" usually isn't true. CAC's jump solo behind enemy lines up to two weeks before a large operation to call in weather. They make the Go/No Go decision based off field observations from the ground) Granted the Beaufort Scale is not as specific as what new fangled fancy tech can give you, but it is quite versatile and adaptable, and with field ops such as Search and Rescue (SAR) or Forest Fire Fighting rarely does a 2-3 MPH difference matter. Overall patterns and trends make a difference not an individual reading. In field conditions you can get constant "read outs" of conditions as the operation is ongoing just by maintain your normal situational awareness. However as with ANY device it should be calibrated before use. You want to make sure the numbers you are calling in are accurate. In this case calibration means training your eyes to see and your brain to recall what those movements mean. You need to learn how to make the observations accurately. Then you can do wind speed any time anywhere under almost any conditions, even at night! The best way to do this is pick some regular views with a variety of trees and start observing their movements. Yes tress actually move. A LOT! You just probably never had reason to take notice of it before. There are set and predicable ways the tress move depending on the wind speed (i.e. pressure) that is applied to them. Of note different trees will give different readings. Soft woods vs Hard woods obviously have different flexibility and foliage so will respond to wind slightly differently. Thus you need to observe a variety of trees and get used to their responses. It is quite easy, just takes a little time and focused effort. So, first things first, forget the scale and just look at the trees. Look at the smallest branches and twigs, can you see that they are actually swaying back and forth? If not keep watching the same spot for a few minutes, you'll be surprised at the choreography been shown to you! Once you see the very tips move, move up the branch a bit and watch how that moves. It's actually quite different than how the tips do. This is due to a complex combination of biology and physics that we need not go into, just have fun and watch the dance. Next move back farther towards the trunk and see how the bigger branches move in a waltz compared to the line-dance of the branch versus the break-dancing of the twigs. Once you see that trees move in predictable ways, then you can look at the chart below and start to correlate each dance step of the tree to the tempo of the music the wind is playing. Last step of the calibration process is once you can consistently correlate your observations to the Beauford Scale then compare your Beauford Scale readings to your own high tech wind speed gauge and tweak your assessments to make sure they line up. Again tress dance differently. Hardwood trees are usually best to observe, but when you can correlate an evergreen's dance against a hardwood's dance now you are adding a layer of sophistication to can rival the high tech gadgets! And no internet required! Download your own PDF version below

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  • Home | Mid-Hudson Mornings

    Click here to find an FCC Amateur Radio License Exam Near You 835 on the 805 Mid-Hudson Mornings Our DMR 'Home' Talk Group 31368 Use 'Search Results' for specific topics, keywords, ideas and phrases. Download our 6 Meter Simplex Results June 2021 ​ Download our Tannersville to Tuxedo Simplex Test 2-Meter Results Matrix February 2021 50 Mid-Hudson Repeaters Download .XLS File Download our Tannersville to Tuxedo Single Side Band 2-Meter Test April 2021 ​ Download our RF Contact Matrix 10, 6 and 2-Meter June 2020 ​ Visit our map of Mid-Hudson Hams A Community of Amateur Radio Enthusiasts At 8:35 am each morning we gather together on the Overlook Mountain Amateur Radio Club repeater (the '805') to 'keep together while staying apart'. Amateur radio is the original social media with no internet required.

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  • Forum | Mid-Hudson Mornings

    To see this working, head to your live site. All Categories Search Participant Forum All participants are welcome to post about their radio hobby, family, fun, other hobbies and .... Sort by: Recent Activity 1 2 3 4 5 Comments Likes Views Recent Activity Item option menu OMARC Weather Net Activation Sunday August 22 2021 Noon Paul AC2UQ · General Discussions 0 0 7m OMARC Science and Technology Net #20 Neil Goldstein · General Discussions 0 0 7d OMARC Science & Technology Net #19: Questions without answers Neil Goldstein · General Discussions 0 0 Aug 08 REVISED PREDICTION FOR SOLARCYCLE 25 LOOKS MOST PROMISING Neil Goldstein · HF, VHF, UHF and Digital 0 0 Aug 05 What Does Dave Say ? My 74' End Fed antenna installed by Joe Gera and decided upon by our OMARC club members has so far been a solid choice. John Petrocelli · General Discussions 0 3 Aug 03 OMARC Science & Technology Net #18: General Discussion Neil Goldstein · General Discussions 0 0 Aug 01 Noise on your Radio by Dave Casler KE0OG Paul AC2UQ · HF, VHF, UHF and Digital 0 0 Aug 01 Will A Choke Help You To Eliminate Line Noise John Petrocelli · General Discussions 0 2 Jul 27 OMARC Science & Technology #17 - Numbers! Neil Goldstein · General Discussions 2 0 Jul 26 Link to the Feb, 2020 Nano VNA presentation Neil Goldstein · Discussion · The Radio Clinic 0 0 Jul 23 Will A 74' End Fed Antenna Work On All The Bands? John Petrocelli · General Discussions 1 2 Jul 21 Timewave ANC-4 Demo Neil Goldstein · HF, VHF, UHF and Digital 0 1 Jul 21 Upcoming Hamfest in Sept. John Petrocelli · General Discussions 1 1 Jul 19 Great Day at Sussex Hamfest John Petrocelli · General Discussions 0 2 Jul 18 HanRongDa HRD-747 Multiband Receiver Neil Goldstein · HF, VHF, UHF and Digital 0 0 Jul 16 OMARC Tuesday Night Presentation Night THIS TUESDAY !!! Safety in the Ham Shack and Grounding Neil Goldstein · Discussion · The Radio Clinic 0 0 Jul 13 OMARC Science & Technology #16 - Radio Series #3 Neil Goldstein · General Discussions 0 0 Jul 11 Subs & Soda at the Park Inaugural In-person Ham Operator Gathering a Great Success Paul AC2UQ · General Discussions 0 1 Jul 09 How Many of these Ads got you to depart with those greenbacks? John Petrocelli · General Discussions 1 1 Jul 09 Weather Net Reporting and Logging Template Ver. 6 – revised 7-1-2021 Paul AC2UQ · General Discussions 1 1 Jul 09 1 2 3 4 5

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Forum Posts (656)

  • The Animal, 7 gallons of fuel for 300 feet!

    I was looking around You Tube today and found a bit of my past. "The Animal"! A neighbor of mine in Cohoes had a pulling tractor known as The Animal. I was part of his pit crew back in the 90's. We went to numerous tractor pulls at the county fairs. The Animal has twin Allison aircraft engines designed in 1939. The model V-1710 is a 1710 cubic inch V-12 supercharged engine. The stock engine produced 1250 HP. With tweaks and alcohol racing fuel, that number is pushed up to about 2500. The sled that they pull, has a weight box that slides forward as it is pulled, transferring weight from the sled wheels to the front skid plate. So, it starts off relatively easy, then gets harder as you progress. Tractors of this class typically have about 45000 lbs. loaded for the pull. Bill sold The Animal back about 99. I found this video of a pull from 2018 in Cobleskill. You'll see The Animal about 12 min. into the video. The tractor originally had 3 engines. It was difficult to keep 3 1939 engines running at peak, in addition to tractor pull regulations putting it in an unlimited class. So, the previous owner dropped it back to 2 engines. 5000 HP still moves things nicely! The answer is: The Animal. The question: What takes 7 gallons of fuel to move 45000 pounds 300 feet? And for those that think "Bigger is always Better!", there is the tractor pulls in Bernay, France Jim Albrecht K2BHM

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