AmateurRadio.com

Stories you’ll find in our August, 2017 issue:

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
By 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 Wavelengths
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

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 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 editor@thespectrummonitor.com.

AmateurRadio.com is offering a free prize drawing!

With the help of our generous sponsor, KB3IFH QSL Cards,
we’re holding a giveaway for 1,000 free full-color premium photo QSL cards.
This is a US$121 value and open to all licensed hams in the USA.

Read the rest of this post

Matt Thomas, W1MST, is the managing editor of AmateurRadio.com. Contact him at editor@amateurradio.com.

With QSLs still arriving from previous 2m EME action, I was looking extra forward to late July's very short window.

When last month's activity was interrupted by my 140W brick amplifier catching fire, I was anxious to see if my repairs and homebrew RFC would still allow me to play on the moon. With July's best-positioned moonrises being too close to the sun (which was also rising at the same time), I was only able to spend a short time over two days before the moon travelled too far to the south and into my neighbour's trees.






Luckily I was rewarded with what seemed like very good lunar conditions, enabling me to easily work six different stations ... three of them being all-time new ones and boosting my EME initials total to 112.

I2FAK Franco / 16x19 el array
RK3FG Anatoly / 4x15 el array
G4SWX John / 4x16 el array
F4DJK Paul / 4x11 el array / #110
F5AQX Andre / 4x11 el array / #111
DL9DBJ Hartmut / 4x10 el array / #112

In addition, DL1VPL told me that he was able to copy me with his single 12el Yagi during the QSO with I2FAK! Needless to say, a contact between two single Yagi stations would be truly remarkable. I've only been able to copy a single Yagi station once over the years.

F4DJK's 4x11 el array

F5AQX's 4x11 el array

DJ9DBJ's 4x10 el array

I was gratified to see that letting the smoke out of my little amplifier last month apparently caused no permanent damage and the repair seems to be holding up ... but I'll leave the bottom off for now just in case it gets any more crazy ideas.
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at ve7sl@shaw.ca.

With QSLs still arriving from previous 2m EME action, I was looking extra forward to late July's very short window.

When last month's activity was interrupted by my 140W brick amplifier catching fire, I was anxious to see if my repairs and homebrew RFC would still allow me to play on the moon. With July's best-positioned moonrises being too close to the sun (which was also rising at the same time), I was only able to spend a short time over two days before the moon travelled too far to the south and into my neighbour's trees.






Luckily I was rewarded with what seemed like very good lunar conditions, enabling me to easily work six different stations ... three of them being all-time new ones and boosting my EME initials total to 112.

I2FAK Franco / 16x19 el array
RK3FG Anatoly / 4x15 el array
G4SWX John / 4x16 el array
F4DJK Paul / 4x11 el array / #110
F5AQX Andre / 4x11 el array / #111
DL9DBJ Hartmut / 4x10 el array / #112

In addition, DL1VPL told me that he was able to copy me with his single 12el Yagi during the QSO with I2FAK! Needless to say, a contact between two single Yagi stations would be truly remarkable. I've only been able to copy a single Yagi station once over the years.

F4DJK's 4x11 el array

F5AQX's 4x11 el array

DJ9DBJ's 4x10 el array

I was gratified to see that letting the smoke out of my little amplifier last month apparently caused no permanent damage and the repair seems to be holding up ... but I'll leave the bottom off for now just in case it gets any more crazy ideas.
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at ve7sl@shaw.ca.

Welcome to the 195nd episode of Linux in the Ham Shack. In this episode, Bill comes to us from West Virginia instead of Montana. We discuss the Boy Scout Jamboree, K2BSA, the CQWW contest, solar eclipses, the new and wondrous FT-8, Debian, ffmpeg, Deepin Linux, trunked radio recording, AI on a USB stick and a whole lot more. Thank you for tuning in.

73 de The LHS Crew

Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at russ@bluecows.com.

Ham College episode 31 is now available for download.

Join Professor Thomas and Dean Martin for part 2 of our studies on the General Amateur Radio Exam. More on the band plans. Series and parallel resistors.

01:16:15

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YouTube

George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at george@amateurlogic.tv.

In this episode extra episode, Martin M1MRB / W9ICQ, Chris Howard M0TCH/N4CTH and Ed Durrant DD5LP interview Yaesu, Kenwood, Flex Radio, Elecraft and ICom during the recent Ham Radio 2017 show.

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at info@icqpodcast.com.