August 2017

Price: $3.00

Rocky Mountain Ham Radio Microwave Backbone and DMR Repeater Network

By Wayne Heinen N0POH

The Rocky Mountain Ham Radio deployed analog repeater sites all along the Front Range of Colorado and had been linking them via the Internet for years. Due to the cost and reliability factors of commercial Internet, the club had been looking for a ham radio spectrum-based transport method for their IP needs which have been steadily growing over the years. What was needed was a digital link that could be created between the various mountain top sites, an IP based network of their own design that would be controlled by the club. Wayne explains how they did it.


Intro to Scanning Today

By Bob Grove W8JHD

The requirements of scanner listeners have been changing since the very first radios capable of tuning the public service bands were manufactured. While some analog scanners available today are still useful, many listener in more urban areas need significant upgrades to their listening posts to continue listening. Bob explains which radios are best for each technology today.


TSM Reviews:

W4OP Loop Antenna

By Thomas Witherspoon K4SWL

Last year Thomas caught a bug: the National Parks on the Air (NPOTA) bug. He found NPOTA the perfect excuse to play radio outdoors. From August to December 2016, he activated ninety-one NPOTA National Parks running QRP (low power). To do so he needed a stand-alone antenna small enough to set up easily, rugged enough to do so many times and capable enough to make contacts from some very remote spots. The W4OP loop filled the bill.


Using Weak Signal Modes for Propagation, RFI, and Antenna Analysis

Robert Gulley AK3Q

Digital mode operating has changed everything for many hams looking for a way around the disappearing solar cycle. WSJT-X weak-signal software, which includes JT65, JT9, MSK144, JT8 and other specialized transmission modes for moonbounce, meteor scatter and aircraft scatter has extended two-way amateur communications on bands that otherwise might not be used. Robert has also discovered that these programs are an excellent resource for identifying and studying propagation, Radio Frequency Interference (RFI) and antenna characteristics.


US TV Channel Assignments: Part 3

By Mike Kohl

This third installment in the series on the repacking of the TV band continues with the identification of significant communities within each designated marketing area (DMA). Markets numbering from 151 to 248 are covered this month.


Scanning America

By Dan Veeneman

Winnebago County (IL), Broward County (FL)


Federal Wavelenghts

By Chris Parris

Joint Base Lewis McChord, Washington


Utility Planet

By Hugh Stegman

Watching the Eclipse with a Radio


Shortwave Utility Logs

By Hugh Stegman and Mike Chace-Ortiz


VHF and Above

By Joe Lynch N6CL

Honey, I Shrunk the Loop


Digital Voice

By Cory Sickles WA3UVV

Feels Like the First Time


Amateur Radio Insights

By Kirk Kleinschmidt NT0Z

RG-6: It’s Still a Steel


Radio 101

By Ken Reitz KS4ZR

Connection Complications: Troubleshooting 101


Radio Propagation

By Tomas Hood NW7US

Coronal Mass Ejection Science


World of Shortwave Listening

By Rob Wagner VK3BVW

The Use and Abuse of SINPO


The Shortwave Listener

By Fred Waterer

Radio from Four Continents via Shortwave and Internet


Amateur Radio Astronomy

By Stan Nelson KB5VL

New Callisto Devices


The Longwave Zone

By Kevin O’Hern Carey WB2QMY

630-Meter Band Plan Takes Shape


Adventures in Radio Restoration

By Rich Post KB8TAD

Heathkit HG-10B VFO


Antenna Connections

By Dan Farber AC0LW

Stealth: A Philosophy and a Methodology

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