Salem Data Blog

Author: John Poole

  • Humidity-Temperature Sensor Scope Creep & Design Change

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    John Poole
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    <p class="wp-block-paragraph">After letting the humidity/temperature sensor run on its own battery power with solar charging, I determined I need to have an understanding of how much battery power is being consumed, how much solar power is being generated, and how expensive (power) it is to send a transmission, e.g. 6 transmissions a minute. This is…

  • Baby’s First Steps

    Baby’s First Steps

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    John Poole
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    <p class="wp-block-paragraph">I took baby out for a 5 minute walk, it’s first, to take humidity and temperature readings and radio them back to a server. We visited a bedroom and the greenhouse. It was all so very new.</p> <p class="wp-block-paragraph">I’m building a solar powered radio humidity & temperature reporting unit; I plan to have three…

  • Blinded By The Fog In August

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    John Poole
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    <p class="wp-block-paragraph">I just configured and started running the fog generator in my greenhouse. 10 nozzles, 0.006 mm diameter pin holes with 1000 psi behind them generates a respectable fog, such as one might encounter in London’s Mayfair. When I enter the greenhouse, moisture accumulates on my glasses and I can no long see through my…

  • Fogco Fog Generator Arrives

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    John Poole
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    <p class="wp-block-paragraph">On Friday, August 1, 2025, I ordered the [upgraded] Fogco kit # 6025116 <a href="https://fogco.com/product/20-nylon-mist-kit-with-dd-pump/">20′ Nylon Mist Kit With DD Pump</a> which includes 10 nozzles (I upgraded to the finest mist: 0.006mm openings) and a Direct Drive Mist Pump .25 GPM .75HP 115V 10.6 FLA. I have been postponing installing a fog system since…

  • iq Multicast

    iq Multicast

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    John Poole
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    <p class="wp-block-paragraph">I released a tool,<strong> iq_multicast</strong>, that broadcasts a USB Software Defined Radio (“SDR”) IQ stream. The tools are written in the C programming language. SDRs range from the $50 (kit on Amazon) RTL-SDR to several hundred dollar versions, e.g. HackRF One ($300) and AirSpy2 ($180).</p> <figure class="wp-block-table"> <table class="has-fixed-layout"> <tbody> <tr> <td>RTL-SDR $50</td> <td>AirSpy2…

  • Released iq_guard

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    John Poole
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    <p class="wp-block-paragraph">I built a tool to help me monitor the various transmissions of a local radio channel. What happens is aircraft at different distances can cause “blow out” on my transceiver, so I wanted a tool that will let me monitor the variety of transmissions there are so I can gauge gain values when I…

  • Products From Carpathia

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    John Poole
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    <p class="wp-block-paragraph">The Rolls Royce brochures from the 1960s used to assert that their dashboards or interior trim sported Carpathian burl elm. </p> <p class="wp-block-paragraph">Recently, this headline caught my eye:</p> <p class="wp-block-paragraph">I forwarded this onto a like-minded friend noting:</p> <p class="wp-block-paragraph"><code>Rolls Royce used to advertise that their dashboards had Carpathian burl elm.  Now they can enhance…

  • Calculating a NW Segment of Salem’s Class D Air Space

    Calculating a NW Segment of Salem’s Class D Air Space

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    John Poole
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    <p class="wp-block-paragraph">I’m still working on the matter of the low flying Learjet over Salem, and in that matter, I have determined the jet first flew parallel to the FAA’s Class D airspace as much as it could before entering it.</p> <p class="wp-block-paragraph">So then I wondered, why and what distance is involved. So here is a…

  • Joplin – Note taking App

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    John Poole
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    <p class="wp-block-paragraph">Just installed <a href="https://joplinapp.org">Joplin </a>which is a note taking application that can be run on Windows 7 (using an older version 12.2.5) and Linux. You synchronize your content among workstation using Nextcloud.</p> <p>So you can paste in ChatGPT chats, pictures, Excel Sheet tables and you have a rich featured notebook.<br /><img class="wp-image-195" style="width: 600px;"…

  • How Classical Music Changed My Life

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    John Poole
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    <p class="wp-block-paragraph">My scrapbook has this nugget – the Los Angeles County classical music radio station KFAC’s advertisement.</p> <p class="wp-block-paragraph">I haven’t been listening to KFAC since moving from Pasadena in the 1990s; have I reverted?</p> <p class="wp-block-paragraph"> My scrapbook has this nugget – the Los Angeles County classical music radio station KFAC’s advertisement. I haven’t been…