The Spectrum Monitor — August, 2015


Stories you’ll find in our August, 2015 issue:

HF Air Monitoring: Understanding NOTAM Information
By Tony Roper

International air-route safety is everyone’s concern, no more so than with those who use the world’s air space daily—military, commercial and civilian aircraft. To help, the world’s aviation authorities make available Notice to Airmen (NOTAM) widely available. These notices tell all pilots what to expect along their regular routes across oceans and continents. But, they also give clues to air monitoring enthusiasts as to what type of aircraft may be in the air and on the air. Tony explains how to unravel NOTAM information to learn when and where to listen.

TSM Reviews: Whistler WS-1080 P-25 Phase I and II Scanner
By Chris Parris

The last few years have been revolutionary for the world scanning radios. In additional to the great technical strides that the manufacturers have pushed to the electronics market, some names in the scanner world have disappeared and new names have come to the forefront. One name new to the world of scanning is Whistler, of Bentonville, Arkansas. Prior to this, Whistler had previously been known for their line of radar detectors, GPS devices and power inverters, but no scanners. Chris takes a close look at this very capable scanner.

Advanced Radio Noise Filtering using DSP
By Geir Laastad LA6LU

Using the signal of a Norwegian Non-directional Aeronautical Beacon (NDB) Geir shows us how it is possible, in some cases, to achieve almost 100 percent noise-free radio reception with advanced use of Digital Signal Processing (DSP) technology. Using a combination of built-in filters and outboard DSP speakers, Geir describes techniques that are most effective for narrow band CW reception, but will also improve the reception of SSB or AM signals.

Digitally Speaking: Digital Voices on HF Part 1
By Cory GB Sickles WA3UVV

When most hams think of digital voice operation, they think of VHF and UHF repeaters. To be sure, that covers where the vast majority of digital voice QSOs take place. While simplex 2-meter and 70-cm activity is out there, in most areas it subsides once one or two repeaters are established in a given area. But, there are plenty of frequencies on HF where proponents of each digital methodology have established a foothold. Cory tells us where those frequencies are and what you need to get on the air.

Multiple Satellite Reception from a Single Ku-Band Dish (Part 2)
By Mike Kohl

Last month Mike walked us through the theory behind multiple feed horns on a stationary Ku-band dish for reception of Free-to-Air satellite signals. In Part 2 he shows how it’s done; crowding as many as 12 feed horns on one 1.8-meter Ku-band satellite dish that can see 12 satellites positioned from 89 degrees West to 119 degrees West. It requires making a custom feed support and takes meticulous adjustment to get it all right, but so worth it!

Scanning America By Dan Veenaman
Scanning Wisconsin; FCC Field Office Shuffle

Federal Wavelengths By Chris Parris
US Navy HYDRA Systems

Utility Planet By Hugh Stegman NV6H
What’s up with SKYKING?

Digital HF: Intercept and Analyze By Mike Chace-Ortiz AB1TZ/G6DHU
Irish Navy HF Operations

HF Utility Logs By Mike Chace-Ortiz and Hugh Stegman

Amateur Radio Insights By Kirk Kleinschmidt NT0Z
Gensets and UPSs: Play it Smart!

Radio 101 By Ken Reitz KS4ZR
2015 Field Day Report and the C64 Today

Radio Propagation By Tomas Hood NW7US
Sunspots Got You Down? You Can Still Work the World

The World of Shortwave Listening By Robert Wagner VK3VBW
Radio Verdad – Small Voice, Big Heart

The Shortwave Listener By Fred Waterer
Kid’s Shows, BBCWS and CRI

Amateur Radio Astronomy By Stan Nelson KB5VL
Noise in Radio Astronomy

The Longwave Zone By Kevin O’Hern Carey WB2QMY
You Have Questions…

Adventures in Radio Restoration By Rich Post KB8TAD
A Classic Pair of Heathkit Hi-Fi Twins
Part 1: the AJ-11 Tuner

The Broadcast Tower By Doug Smith W9WI
What Happened to WOWO

Antenna Connections By Dan Farber AC0LW
Soldiering on after a Microburst

The Spectrum Monitor is available in PDF format which can be read on any desktop, laptop, iPad®, Kindle® Fire, or other device capable of opening a PDF file. Annual subscription (12 issues, beginning with the January 2015 issue) is $24. Individual monthly issues are available for $3 each.

Ken Reitz, KS4ZR, is publisher and managing editor of The Spectrum Monitor. Contact him at [email protected].

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