This is an interesting article: mainly about a miniature Tuneable YIG – yttrium-iron-garnet – filter that could replace many fixed filters. Quote “”Wireless devices use different filters for different frequencies, with the effect that covering all frequencies or bands requires large numbers of filters that take up substantial space. (The typical smartphone includes upwards of
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That’s hard to believe! I would just put the equipment in a sealed rack with a lot of well filtered airflow. Someone suggested Fluorinert. https://www.facebook.com/reel/464912799258554?mibextid=9drbnH&s=yWDuG2&fs=e
This circuit is used for converting an analog signal into a digital pulse stream. Such things as class D audio amplifiers, servo amplifiers, A to D converters, or sending an analog signal across a fiber optic link. The Schematic and explanation here in this webpage. https://lrak.net/wiki/555_Delta-Sigma_Modulator.html The output signal is shown as audio modulated onto
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Supposed to have 10 to 14 km range. But probably at very low data rates. https://www.facebook.com/reel/936216961243959?mibextid=9drbnH&s=yWDuG2&fs=e
A long time ago when we were going to Cat5 UTP, I had a lot of these MX20Ts left over. So I made up a 15 pin plug with the negative 9VDC on pin 6 and positive on pin 13, and soldered the wires to the battery contacts. I taped the battery to the back
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This is IoT internet of things. You can turn something on or off from anywhere. You can schedule it to turn on or off at certain times. Says, “…made my life 1000 times easier.” https://www.huffpost.com/entry/kasa-smartplugs-sale_l_65dcb876e4b0e4346d533b5d/amp
SpaceX Reveals 8,000 satellite to satellite laser links. https://www.tesmanian.com/blogs/tesmanian-blog/starlink-video#:~:text=The%20’space%20laser’%20feature%2C,Gateway%20ground%20station%20on%20Earth.
This Saturday I had to wait for first, an at&t tech to verify that the outage was in their cabling. Then he found that the problem was 585 feet upstream, and he didn’t do pole climbing, he had tondispatch someone from Construction who climbed poles and had a bucket truck that could access the cables
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When I was in the Army in Germany, I worked at the switchboard. We had a few telephone lines between HQ where I was and other missile battalions. These were from the German telephone system. There weren’t enough telephone pairs so they ordered the transformers used to make phantom circuits and installed them at both
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Court upholds California Net Neutrality Law. This is a blow to the telecom providers, that wanted to throttle the speeds of users to make more money. https://apnews.com/article/technology-business-california-telecommunications-jerry-brown-2db073ce6d11c7274fd9c6291d3c411b
