Skip to content

Ham Radio . Magnum Experimentum

Antennas, experiments, engineering and other articles of interest to radio folks.

  • Home
  • Radio Shorthand
    • Morse Abbreviations
    • Morse Code
    • Phonetic Alphabet
    • Q Signals
    • RST Signal Report
  • Tech Talk
    • Antenna Gain
    • Antenna Counterpoise
    • Digital
    • Logging Software
  • Amateur Radio, Why?
  • About
    • Privacy Policy
    • Terms and Conditions
    • Request Account
    • Contact
    • Sitemap
    • Advertise
  • Subjects
    • Activities
    • Antennas
    • contesting
    • Connectors
    • Digital Modes
    • EmComm
    • Installations
    • interfaces
    • Introspection
    • Lab Shootouts
    • Miscellaneous
    • mobile
    • NEC Shootouts
    • News
    • Operating Tips
    • power supply
    • Accessories
    • Promoting
    • Propagation
    • Public Service
    • Radios
    • Repair
    • Reviews
    • Safety
    • Software
    • station
    • Test Gear
    • Tomfoolery
    • Whackers
  • Home
  • Radio Shorthand
    • Morse Abbreviations
    • Morse Code
    • Phonetic Alphabet
    • Q Signals
    • RST Signal Report
  • Tech Talk
    • Antenna Gain
    • Antenna Counterpoise
    • Digital
    • Logging Software
  • Amateur Radio, Why?
  • About
    • Privacy Policy
    • Terms and Conditions
    • Request Account
    • Contact
    • Sitemap
    • Advertise
  • Subjects
    • Activities
    • Antennas
    • contesting
    • Connectors
    • Digital Modes
    • EmComm
    • Installations
    • interfaces
    • Introspection
    • Lab Shootouts
    • Miscellaneous
    • mobile
    • NEC Shootouts
    • News
    • Operating Tips
    • power supply
    • Accessories
    • Promoting
    • Propagation
    • Public Service
    • Radios
    • Repair
    • Reviews
    • Safety
    • Software
    • station
    • Test Gear
    • Tomfoolery
    • Whackers

WSPR

KX4O SDR Receiving Electronics

October 23, 2024January 8, 2023
SV1AFN J310 Preamp into Mini-Circuits Limiter

With a bit of work, one can successfully feed an array of LF-HF receivers from one broadband antenna.

Categories Electronics Tags 43 foot, DXE, HF, kiwisdr, LF, MF, Minicircuits, sdr, spotting, SV1AFN, WSPR

Feedline eliminator test transmitter – first look

March 20, 2019March 4, 2019
Raspberry Pi Zero Signal Generator

The Raspberry Pi Zero brings nearly off the shelf gear to the task of generating an RF test signal from a completely wireless, small, self powered device about the size of a D cell.

Categories Test Gear Tags battery, lithium, Pi Zero, Pi Zero W, PiCW, raspberry pi, riptx, WSPR, WsprryPi

Help support this site

Become a Patron!
The Amateur Radio Lighthouse Society
The Amateur Radio Lighthouse Society

Topics & Keywords

2m 6m 10m 15m 20m 40m 43 foot 70cm 80m AHVD APRS Baluns battery BigIR copper Diamond dipole DX-Eng. EFHW Elecraft end-fed EZNEC Field Day Golden Packet hexbeam J-Pole Kenwood kj4faj KX3 kx4o measurement mobile NEC NMO NVIS packet PL259 QRP sdr Simulation SteppIR UHF vertical dipole verticals VHF

Recently popular

  • Improving the Super-J
  • Airspy YouLoop LF/MF/HF Möbius Receive Antenna
  • Mast Mountable J-Pole Antenna
  • Slim Jim vs. Traditional J-pole Antenna
  • Small Loop HF Antenna
  • Electrically isolated end-fed vs. center-fed dipole radiation
  • Installing a Vertical Antenna Base with no Concrete
  • Build this Vertical Portable HF Antenna
  • J antenna and variations thereof
  • Collinear 5/8 wave J-Pole vs. Collinear 1/2 wave ...

© 2007-2025 John Scott Huggins and other authors and creators, All Rights Reserved.