What is the cause of this unusually long period of terrible HF band conditions?

7yr ⋅

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What kind of antenna is that one?

8yr ⋅

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Why are Wullenweber CDAAs obsolete?

8yr ⋅

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cubesat turnstile antenna material selection

8yr ⋅

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Tuning a wire antenna by folding

7yr ⋅

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How does Wi-Fi antenna work?

7yr ⋅

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Does a balun need to be made with coax?

7yr ⋅

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Measurement/calibration error after OSL calibration on VNA

8yr ⋅

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4NEC2 - Radiat-eff. vs. Radiat-power

8yr ⋅

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How does VHF/UHF propagate beyond the expected (radio) horizon?

7yr ⋅

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Very odd and wide 30m signal. What is it?

7yr ⋅

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Dipole Antenna Current Distribution at any Time Instant

7yr ⋅

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Can amateur bands be used for ISM purposes?

7yr ⋅

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Antenna connector name

7yr ⋅

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Troposcatter: really all that bad?

7yr ⋅

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Why don't baluns require precise conductor spacing as in twin-lead?

7yr ⋅

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Why do some straight keys have a slider that shorts the contacts continuously?

7yr ⋅

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What's this crossover toroid winding called and what is its purpose?

9yr ⋅

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Signal Source Block of GNU Radio

7yr ⋅

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Are used PolyPhaser IS-50 RF surge protectors likely to work?

7yr ⋅

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Detecting signals using statistics

7yr ⋅

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How does an antenna transform impedances along its length?

10yr ⋅

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Identify this “large TNC” coax connector

7yr ⋅

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What are the 3 or 5 peaks in an FM broadcast during silence?

7yr ⋅

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Why does AM have sidebands?

9yr ⋅

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Decimation to listen to FM radio with gnu radio

8yr ⋅

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Building a crystal radio with my brother. How does this circuit work?

7yr ⋅

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What chewed my coax

9yr ⋅

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How to calculate if low-pass filtering is sufficient?

8yr ⋅

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Antenna tuning while receiving

10yr ⋅

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Balun identification from picture

8yr ⋅

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Polarisation loss Dipole antennas

8yr ⋅

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In the context of the mixer in my radio, what does balanced and unbalanced mean?

8yr ⋅

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How does one read a ferrite datasheet?

11yr ⋅

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What is a fixed digital message forwarding system?

10yr ⋅

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why do some radios have two fuses in the power leads

8yr ⋅

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How does a folded dipole work?

11yr ⋅

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How to choose the right sampling rate and bandwidth for RTL-SDR dongle?

8yr ⋅

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Can anyone please suggest a substitute for the BFY51 transistor?

7yr ⋅

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Building an IQ mixer using an in-phase LO splitter

8yr ⋅

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How can I add amplitude modulation to this transmitter?

11yr ⋅

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Tiger Tail + capacitive coupling... what's the interaction?

7yr ⋅

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Why do SDR control apps have two frequency settings?

11yr ⋅

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Signal on various frequencies, about 2.5k bandwidth, sounds like a broken motor turning: What is it?

7yr ⋅

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Can I have multiple inverted-vee antenna fed by a single coax?

11yr ⋅

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Satelite dish modified for Wi-Fi (Signal Elevation Question)

7yr ⋅

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WSPR RX dial frequency

8yr ⋅

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How should this SWR meter's directional coupler work?

8yr ⋅

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What are the continuous transmissions at the lower end of the spectrum?

10yr ⋅

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Optimal antenna orientation for High altitude balloon?

7yr ⋅

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Lightning Dissipators

9yr ⋅

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Plastic predator bird props --- Are they effective? How to mount them?

8yr ⋅

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What does a lightning bolt symbol next to an antenna connector mean?

11yr ⋅

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Shortwave Antenna Listening with Portable Receiver Like TECSUN PL-660?

8yr ⋅

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How the Coaxial Collinear Antenna Works?

7yr ⋅

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How might one realize a first order, two dimensional RF field antenna for HF?

11yr ⋅

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What is the socket for on this Baofeng BL-5L battery?

9yr ⋅

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Interpretation of NASA design

8yr ⋅

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How to Evaluate Antenna Data

11yr ⋅

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SDR - FM Radio station interference

10yr ⋅

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Impedance Matching Different Feedlines

10yr ⋅

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Weather-proofing antenna connections

10yr ⋅

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SDR hardware architecture schematic

8yr ⋅

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Which mode describes this modulation scheme

8yr ⋅

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How to make an inductor?

10yr ⋅

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How to find the front-to-back ratio given an antenna radiation pattern diagram?

11yr ⋅

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SDR CB Transmission

8yr ⋅

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Local oscillator generates a frequency twice lower than received signals. Why and how does it work?

9yr ⋅

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Morse Code Key Grease

11yr ⋅

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OK for S/RF light to be illuminated at engine idle?

9yr ⋅

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Would retrofitting an external antenna to a smartphone be feasible?

8yr ⋅

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Basic Signal Detector using MOSFETs

8yr ⋅

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Will I harm batteries by only trickle charging them, or connecting them to a power supply?

9yr ⋅

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Connect Printed Yagi-Uda Dipole Array with Balun to coaxial cable correctly

10yr ⋅

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Why does a counterpoise need to be grounded

8yr ⋅

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What am I responsible for on my link?

10yr ⋅

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Power efficiency of SSB-Large carrier

10yr ⋅

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Grounding VHF base station antenna

11yr ⋅

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How to calculate UMTS bitrates?

11yr ⋅

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Antenna Design for specific directions

10yr ⋅

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Adequate lightning protection for sloped dipole or G5RV?

10yr ⋅

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recommended capacity bottom-hat clearance above metal roof

10yr ⋅

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Can I convert a telescoping antenna radio to work with an FM Dipole?

9yr ⋅

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How to connect this Active Antenna Loop and 100MHz Upconverter?

10yr ⋅

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How would this RF field strength meter be calibrated?

11yr ⋅

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Trap dipole tuning up on the wrong band

10yr ⋅

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Idea for better reception in crowded city

10yr ⋅

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What is this matching technique called?

10yr ⋅

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guard planes in differential antenna PCB designs

7yr ⋅

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