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Have the
@Rogers_ACS 5880 0.125 inch laminate on the operating table. The@carbide3d Nomad 883 should be able to cut it like butter.#phased#chirped#antennas#rf@thethingsntwrk@rfspacepic.twitter.com/QSImVHyKwt
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experimenting w/
@ADI_News AD9681 today. Trying to get it up an running, but not sure if it will reliably work at 125MHz with@DigilentInc Nexys Video with an Artyx-1 device. Might need dynamic phase adjustment or reducing the ADC sample rate to 80 MHz.#16inSDR#phasedarraypic.twitter.com/CfFOqYKBlw
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I am starting to get too many questions at home regarding the 435 MHz
#phasedarray ... What is that#thing on the dining table? Where are you going to put it? Is it#dangerous? is my favorite.pic.twitter.com/HSMYI0IfAV
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Does anyone have information on the balun used on these antennas? Looks like a regular 1/4 λ balun plus a folded Marchand balun. Don’t want to have to Dremel the case to see how the lines connect on the other side.pic.twitter.com/zqOxDjKw0F
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Would love to have an IQ recording of the AN/FPS-85 phased array radar at ~442 MHz near Panama City Beach. It is very well positioned to receive passive reflections from my location. https://en.wikipedia.org/wiki/Eglin_AFB_Site_C-6 …pic.twitter.com/YknpBB21EW
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Pieter Ibelings proslijedio/la je Tweet
The latest Solar Cycle 25 forecast has been released: Cycle 25 forecast to peak with a smoothed sunspot number (SSN) of 115 in July, 2025 (+/- 8 months). Cycle 24/25 minimum likely to occur in April, 2020 (+/- 6 months). https://www.swpc.noaa.gov/news/solar-cycle-25-forecast-update …pic.twitter.com/v5maO8FVcb
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Pieter Ibelings proslijedio/la je Tweet
We've just posted test results and 4-Dimensional gain plots of the
@rfspace UWB-2 Vivaldi antenna. It performs well from 500 MHz to 11 GHz. https://antennatestlab.com/antenna-examples/example-3-vivaldi-antennas-rfspace …pic.twitter.com/OUIyAtzhDTHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Pieter Ibelings proslijedio/la je Tweet
We've just posted test results and 4-Dimensional gain plots of the
@rfspace LPDA-600-X-POL antenna. It performs well from 650 MHz to 3 GHz and doubles as a Christmas tree. Shown with a bottle of scotch for accurate scaling. https://antennatestlab.com/antenna-examples/example-3-vivaldi-antennas-rfspace …pic.twitter.com/ETkOXyXyyb
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front side of the phased array. Only 4/7 antennas. Rest of blades should be here by the weekend.pic.twitter.com/IeUGwRXIoC
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The simplest form of a beamforming network (boresight beam)
is a @MiniCircuits ZFSZ-8-43. Happened to have one in my toolbox.#phasedarray#radar#rf#antennapic.twitter.com/Qair0bFjRa
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Pieter Ibelings proslijedio/la je Tweet
An update on the current
@SpaceX#Starlink constellation. As of December 5th, all operational satellites from the May launch are at 530 km altitude or are lowering their orbit. 40 of the November satellites are still around 350 km altitude, while 20 continue to climb.pic.twitter.com/eDIG9O9i2x
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turns out that the dielectric of LMR-500 (0.375”) fits perfectly into
@Actobotics frames. This makes great baluns, filters, cavity filters, antennas etc.#phased#chirped#antennaspic.twitter.com/m6O1OGZWGW
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I think the 2010 resistors will work fine. They worked ok on the 4x4, but will know next week :)
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Had to respin the 435 MHz PCB for the
#beamforming network. The 8-point FFT measures 500 x 400 mm & is probably the fastest FFT in the Southeast. Has phase progressions 0°, ±45°, ±90°, ±135° and 180° w/ 8 simultaneous beams at 0° (broadside), ±14.5°,±30°, ±48.6°, and 90°@rfspacepic.twitter.com/cc0FxqzZI7
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Why live a linear polarized life when it could be circular?
#phasedarray#chirped#antenna@rfspacepic.twitter.com/66oGDCKnMj
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Had coupler and air dryer on the back. Shown with its lil brother 8-16 GHzpic.twitter.com/UYg9Fc7dZD
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One of my favorite antenna feeds of all time. A cross polarized square feed by Scientific-Atlanta. Was made in octave bandwidths. This is the 2-4 GHz model.pic.twitter.com/3oiGVgNNFO
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The
@carbide3d Nomad 883 Pro arrived! Should be able to make quick PCB prototypes now.#PCB#antennaspic.twitter.com/X4Qv4wL7Hv
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Ordered the parts for the miniPAWS 420-450 MHz tracker and radar experiment. Might as well start with 7 panels and then upgrade to 19 or 37. Think the 19 panel version is still manageable. All the parts should be here for Xmas break.
@IanJohnBuckley@rfspace@AmsatUK#PhasedArraypic.twitter.com/XewV5lOY9N
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