Low profile 2m/440 mobile installation

Transceiver in sunglasses holder

Video showcases a nice, clean, professional installation of a 2m/440 transceiver into Hyundai sedan.

Runt radials

Antennas shipping with ineffective antenna decoupling are on the rise as manufacturers daringly advocate 1/12 wave radials work.

Diamond CP22E Antenna Review

Despite some antenna gain hype, the Diamond Antenna CP22E 2m base station antenna is a remarkable design achieving 5 dBi directivity in a slim low-profile design.

Decibel hell & the reign of antenna gain pain

A short history of antenna gain terminology and some guidance to muddle your way through some of the nefarious alternative facts you may encounter.

Displacement Currents

Kirchhoff's current law as boundaries.

Displacement current explains why the ends of dipole antennas have something more than zero current.

Of fields and feedpoints

Understanding how feed position along the half-wave dipole antenna affects the electric and magnetic fields around it.

Exciting times in soft modem development

The active and exciting development of the sound card soft-modem terminal node controller modulators/demodulators will help us continue to raise the throughput of our AX.25 connections as new releases arrive.

The need for 9600 bps AX.25

Where AX.25 fits into the ARS digital landscape

Despite its age AX.25 can compete with the slick newer digital technologies. Let’s see where packet fits into the digital landscape.

APRS AT Golden Packet 2016 NoVA Report

Using modest gear, station #6 of the Appalachian Trail Golden Packet exercise confirms 9600 bps works well for passing packets north and south.

Antenna pattern plots: Good intentions vs. good data

Just say no to handcrafted data graphs

In the 21st century should we believe antenna graphical gain data based on hope and hearsay? J-pole antenna gain drawings are a common bad example.