UHF connector improvements
Cutaway examinations, mathematical calculations, VNA measurements and proposed compensation techniques round out a nice article by W0QE about the UHF connector.
The dipole antenna, how industry defines it
Is a dipole antenna defined by its behavior alone or also how one energizes it? The answer exists in IEEE and historical literature.
Understanding digitization
A Youtube video by “Monty” Montgomery explains and demonstrates digitization concisely and expertly.
Help Hamradio.me remove the ads
All, The time has come to change the way this web site operates and considering removing the ads plus completely revamping the format to include support for portable devices. I would never go the route of some web sites with numerous pop up ads and other very disruptive behaviors. However, the revenue from advertising continues … Read more
DC Motor Controller
The venerable National Semiconductor dc motor controller IC combines with a modern PICAXE micro-controller to provide one-knob tuning control of a small loop antenna.
Aluminum RF power splitters under test
Two examples of square aluminum RF power splitters built from 1973 plans reveal a 15 MHz difference from the claimed design frequency.
Packet Radio Reprise?
Is packet radio enjoying a revival? The continuing availability of traditional gear plus a surprising list of brand new TNC equipment suggests it may.
Noisy Kenwood TM-D710A Microphone
My Kenwood TM-D710A microphone (Model MC-59) is producing crackling and intermittent, poor audio so I took a peak inside to have a look around.
UHF BNC N Connector Return Loss Compared
A savvy ham performs testing on the UHF Connector and compares with BNC and N connectors.
FCC proposal to curtail net gear mods
Think your WiFi mod habit is safe? Perhaps not with the latest proposals from the FCC.
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Slim Jim vs. Traditional J-pole Antenna
Real measurements of a Slim Jim antenna and traditional j-pole antenna reveal the truth about their respective gain and pattern.
Small Loop HF Antenna
With components from a variety of vendors, custom machining and a bit of trial and error, another variant of a small loop HF antenna is born.
Berryville 2015
The AHVD, Small Loop antenna and some of the usual tailgate “stuff” was made ready for inspection at the Berryville hamfest.
Kentucky Packet Network
Hear ye o wielders of the electro-magnetic magic, the chronicles of KYPN doth transcribe packet radio that serveth thine brethren yet toucheth the Internet not.
Comparing RTTY, PSK and MFSK
Using the ARRL field day test message to compare RTTY, PSK and MFSK digital modes.
APRS AT Golden Packet 2015 NoVA Report
Station #6 of the ATGP using modest gear and within a comfortable shelter.
KX4O 1B-Battery VA Field Day 2015
Despite a weak battery and few contacts, our 1B-Battery effort verifies a 40m small-loop and packet-radio NTS messaging using quick deploy antennas.
NVIS Gain of Loop and Dipole vs. Height
Observations from the Virginia QSO Party confirm simulation results concerning horizontal antennas and NVIS propagation.
Mast Mountable J-Pole Antenna
The J-Pole antenna’s long and storied design history is due for one more chapter to mitigate the longstanding mast current and reliability issues.
Hamradio.ME sponsors VaQP Plaques
The origins of two Virginia QSO Party awards: one for club, the other for single operator.