Archive for the ‘Uncategorized’ Category

Amateur Radio Weekly – Issue 161

Hamvention reports second-largest attendance ever
Hamvention 2017, at its new venue in Xenia, Ohio, attracted 29,296 attendees.
ARRL

Join Virtual Buildathon and build satellite antenna
Chertsey Radio Club is running a virtual build-a-thon to construct a dual-band satellite antenna for 2m/70cm using low-cost parts and it’s open to all.
AMSAT UK

June VHF Contest results
Any June VHF contest with some decent sporadic-e propagation on 50 MHz is a win.
K0NR.com

DitDit.fm
The Podcast for Morse Code and CW operators!
DitDit.fm

Bad interference & good neighbours
1 second of S7 static, 1 second back to the standard noise floor (about S5), repeat.
VA3QR.ca

Detect lightning strikes with audio equipment
The build is able to detect lightning using a single piece of equipment that is almost guaranteed to be within a few feet of anyone reading this article.
Hack A Day

Tales from Michigan’s State Parks
We recently had an epic Michigan State Parks on the Air run and activated 10 parks in 6 days!
KB6NU.com

Quicker-turnaround digital modes in experimental stage for WSJT-X
Tentative goals include 15-second T/R sequences, sensitivity around S/N = –20 dB.
ARRL

New rules in Mexico unlock FM radio on smartphones
Mexico’s Federal Telecommunications Institute approved a new rule that requires all smartphone manufacturers to enable the technology that allows the device to pick up FM radio signals.
eMarketer

Video

Icom ID-4100 D-Star mobile quick review
The new ICOM ID-4100 D-Star mobile.
Ham Radio Concepts

Winner Announcement – June 2017 SDR Giveaway

NooElec and AmateurRadio.com have picked the winners of our
June 2017 SDR Receiver Giveaway!

Look to see if your name and callsign appears, and follow directions
below to claim your prize if you’re one of our 30 winners…

Prize Package Winners

Two (2)
NESDR SMArt XTR HF Bundles
(with TCXO upgrade module)

Gayland W9AKW
Stan UA3SAQ

Five (5)
NESDR Nano 2+ ADS-B Bundles

Don N0SUB
Scott AF7IL
Federico IW2MVI
Dwain KB1JLO
Stan W0KP

Five (5)
NESDR Nano 2 ADS-B Bundles

Christos SY2BRK
Don KF4A
Dave KM4OWF
Dick KN7AT
Dean N4AJK

Five (5)
NESDR SMArt and NESDR SMArt XTR Two-Packs

Alan W7ALN
Chab YT7WA
John AC2NZ
Vladimir UT1PG
Dennis ZS4BS

Three (3)
NESDR SMArt XTR bundles with antennas

Dave M0LMN
DeWayne KB9ZJ
Miguel EA7JWDTen (10)
NESDR SMArt XTR SDRs

Doug KD5OUG
George VK2NGA
Eric G4EBO
Evariste F5OEO
Jeff VE6DV
Galina UB3ETG
Dustin KD0QYR
Marco PE1ONA
Peter DG1FK
Karl VE7JKD

 Claiming Your Prize

If your name and callsign appears above, please e-mail me at:

[email protected]

Please provide your full name, callsign, and complete shipping address including country.
This is ESSENTIAL to make sure you get your prize as quickly as possible.

We must hear from you by Monday, 19 June 2017.

You can get future winner announcements by
subscribing to our free Amateur Radio Newsletter (subscribe below),
following our posts via RSS feed, via Twitter (@amatradio),
or via Facebook (facebook.com/amatradio).

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Sign up so you won’t miss our next prize drawing!

Please tell your friends about this giveaway!

Thank you to NooElec for offering these fantastic prizes!

Visit their website at NooElec.com / eBay store / Amazon store

Interested in ordering now on their website? Use coupon code
‘AMRADIOTENOFF’
for $10 off orders of $100+
(valid through June 17, 2017 at NooElec.com)

Amateur Radio Weekly – Issue 160

IRLP rules them all
Superior to all the new digital voice modes – combined.
KE9V

Digital revolution or evolution?
Few or even no CW / SSB signals on the HF bands while at the same time seeing lots of activity throughout the digital portion of the bands.
VE7SL

More Antennas! Receiver Overload! Satellites!
In my never-ending quest to develop the perfect high-altitude ballooning chase car, I’ve added a commercial 70cm turnstile antenna.
RF Head

Why choose the Icom 7300 over the 7610?
You can buy three Icom 7300’s for the same price as a single Icom 7610!
M0JCQ’s Ham Blog

The 6m band holy grail
For us here in Europe the holy grail of the 6m band would be working Japan on 50MHz.
PE4BAS

Hamradio Line Loss Calculator for iOS devices
Coax Line from Federico Romano, IW2MVI is a simple and fast app that allows you to calculate the loss of your coax line.
Mac Ham Radio

Monitoring railroad ATCS control signals with an RTL-SDR
ATCS is used for things like communications between trains, rail configuration data, train location data, speed enforcement, fuel monitoring, train diagnostics and general instructions and messages.
RTL-SDR.com

Hamvention improvements already in the works for 2018
The food and forum venues at the new location got high marks, but the flea market suffered badly from the effects of heavy rainfall.
ARRL

Video

Sporadic E Skip on 10 Meter hand held radio
Be sure to check out 10 meters and 6 meters for sporadic E propagation late mornings or in the evenings. Now is a good time of the year.
RadioHamGuy

Ham radio kite antenna prototype
Our first incarnation of the kite antenna using a smaller kite.
KA5D

We’re Giving Away Free SDR Receiver Packages to 30 Lucky Hams Worldwide!

NooElec and AmateurRadio.com have teamed up
to give away
Software-Defined Radio (SDR) Receiver Packages
to 30 lucky ham radio operators worldwide!

…plus NooElec will even pay the shipping worldwide!
The deadline to enter is 14 June 2017 
at 18:00 UTC.

Prize Packages

Two (2)
NESDR SMArt XTR HF Bundles
(with TCXO upgrade module)
 Listen to and watch frequencies from
100kHz – 2300MHz+ with this bundle.

Five (5)
NESDR Nano 2+ ADS-B Bundles
Includes 2 calibrated and programmed SDRs,
4 antennas, and 5 RF adapters per prize.

Five (5)
NESDR Nano 2 ADS-B Bundles
Includes 2 calibrated and programmed SDRs,
4 antennas, and 5 RF adapters per prize.

Five (5)
NESDR SMArt and NESDR SMArt XTR Two-Packs
One of each per prize.

Three (3)
NESDR SMArt XTR bundles with antennas

Ten (10)
NESDR SMArt XTR SDRs

Eligibility

All licensed ham radio operators worldwide!
earth
(Free worldwide shipping is included!)

How to Enter

It’s very simple!
Leave a comment to this post.
(e-mail address will not be shared)

Entry Duration

Only 1 week!

You may enter only once from
7 June 2017 18:00 UTC
to
14 June 2017 18:00 UTC

(multiple entries from the same entrant will be discarded)

Winner Announcement

15 June 2017

You can get the winner announcement by
subscribing to our free Amateur Radio Newsletter (subscribe below),
following our posts via RSS feed, via Twitter (@amatradio),
or via Facebook (facebook.com/amatradio).

[widgets_on_pages id=”Inline Subscription”]

Sign up so you won’t miss our next prize drawing!

Please tell your friends about this giveaway!

Thank you to NooElec for offering these fantastic prizes!

Visit their website at NooElec.com / eBay store / Amazon store

Interested in ordering now on their website? Use coupon code
‘AMRADIOTENOFF’
for $10 off orders of $100+
(valid through June 17, 2017 at NooElec.com)

The winner will be chosen at random (using random.org) from all valid comment entries to this post received by the contest deadline. Entries will be deemed valid at the sole discretion of AmateurRadio.com and may be rejected for any reason, including inappropriate comments. Entries received after the deadline will not be considered. The prize may not be transferred. The prize may not be exchanged for cash. Winner agrees to allow AmateurRadio.com to use their name and callsign to announce them as a winner on our site, and to share their contact information with the sponsor for the purposes of awarding the prize. No purchase necessary to win. Odds of winning dependent on total number of entries received. Winner is responsible for any applicable taxes or fees imposed by their jurisdiction. Void where prohibited by law. Winners limited to licensed Amateur Radio Operators and subject to export restrictions, where applicable.  E-mail addresses of all other entrants will not be shared with any third party, including the sponsor. Entrants will not receive any unsolicited e-mail or be placed on any e-mail list.

Don’t forget to enter! Just leave a comment to this post.

HamRadioNow: Amateur Television (ATV)… Digital to the Rescue?

When broadcast television began to get big, back in the ’50s, the pundits predicted that it would kill radio. It didn’t, of course, because radio changed to serve its market in different ways (music, news and talk replaced soaps and serials). But TV did quickly become the 8000 pound gorilla … despite a recent radio industry group’s campaign saying that people spend more time with radio than TV today.

Television (or video) has existed in ham radio for a few decades. But for us, it’s still a very niche mode, practiced by a relative handful of hams. Despite all my television/video experience and all the video equipment I’ve accumulated for HamRadioNow.tv, I’ve never had much interest in ATV. Some local guys have had an ATV repeater on and off for a while, but I didn’t catch their bug. Of course, I spend very little time at home on the air. 90% of my operating time is mobile. But lots of hams do spend time on the air from the shacks, on radio.

So why hasn’t video been embraced by the masses?

Equipment is probably one reason. Until recently, hams have used mostly the same analog AM video mode as broadcast television did BD (Before Digital in 2009). A little off-the-shelf equipment has been available. Not that expensive, but not an impulse-buy, either. Getting it on the air was a little challenging. Broadcast TV runs hundreds of kilowatts with antennas on 1000’+ towers. Hams discover that when you spread ham-style signals out from a couple of kHz of SSB or FM to cover 6 MHz (the bandwidth of an AM TV signal), those signals sputter out pretty fast (but, as my guest on this show will point out, not that fast!). Repeaters help, but there are only a few repeaters around. And there’s certainly no large group of hams on the air to help pull you in. You have to decide that this is an edge you want to sit on.

Digital to the rescue? Broadcast TV was required to switch from analog to digital over a decade ago. Ham TV wasn’t required to, but some hams discovered and repurposed some relatively inexpensive digital equipment and discovered that digital ATV was better than analog in many ways (better picture, lower bandwidth, high definition, and at least not more expensive… maybe cheaper). They mostly don’t use the same digital that broadcast TV does in the USA. The digital equipment available allows for a variety of modes and schemes, adapted from cable-TV, satellite broadcast, microwave link and European broadcast digital TV.  And, btw, in a year or two the USA will change to a totally different digital video system, but that’s another story.

The digital stuff has made ATV repeaters easier, and  it’s made operating way more flexible. Analog ATV worked pretty much with a camera pointed at the ham’s face. You could maybe play back a VHS tape into your transmitter, but switching and mixing video required some expensive equipment. The repeaters could repeat the input signal, and that’s all. Well, the the same digital revolution that makes HamRadioNow possible on a shoestring budget (while looking better than broadcast TV did 20 years ago) lets ATV operators become studios. And video over the Internet does the same thing for ATV that it does for D-STAR, DMR, Fusion, etc. on voice: it brings activity from around the world to the local repeater when otherwise the handful of local ops wouldn’t really sustain it.

HamRadioNow has covered many TAPR DCC talks on digital ATV over the past decade. Yes, the first were this talk by Ken Konechy W6HHC (very technical) and this talk by Art Towslee WA8RMC (more operational) back in 2009. Seems like ancient history, but Art says they’d had digital on their ATV repeater in Columbus OH for 5 years . For more, dig out this YouTube Playlist and scroll to Episodes 127, 168, 169, 227, 284!

This year, we talked to digital guru Mel Whitten K0PFX and ATV Quarterly magazine editor Mike Collins WA6SVT in our thunderstorm prone SIB* tucked back in Tent City at the 2017 Dayton Hamvention®. The conversation is mostly aimed at hams who have never (and may never) operated ATV, but wouldn’t mind being informed about the subject. That’s plus or minus (OK, all plus) some ATV jargon that’s hard to avoid when talking to geeks.

Will this ‘new’ digital ATV finally create a mass migration to video? OK, I don’t think so. Maybe for the same reason we still make phone calls instead of ‘video calls’ on Skype, Duo, Facebook and Facetime (etc. etc.). We don’t want to have to look pretty for the camera. Hey, don’t call me on video right now! I’m still in my sweats and I haven’t showered yet. I’m not ready for my close-up, Mr. DeMille.

*Studio In a Booth

Amateur Radio Weekly – Issue 159

Urban HF Noise
Over the past 30 years, HF radio noise in urban areas has steadily increased. S6-S9 noise levels are common, which makes it hard to listen to the signals we want to receive.
Rowetel

Radio controlled pacemakers are easily hacked
Doctors use RF signals to adjust pacemakers so that instead of slicing a patient open, they can change the pacemakers parameters which in turn avoids unnecessary surgery.
Hack A Day

Adding ethernet lightning protection to the shack
The whole idea with isolation is to reduce the vulnerability of the on-board Flex-6700’s Ethernet adapter to stray static or electrical charge energizing a CAT6e cable.
K9ZW

Shifting to Linux
Maybe you are surprised to find a Windows vs Linux reading in 2017.
EA4EOZ

FCC issues Licensee a Notice of Violation for Pirate Broadcasting
FCC agents monitored the apparent unlicensed signal 93.7 MHz and used direction-finding techniques “to positively locate” its source as Hilden’s residence.
ARRL

A tour of the QB50 Cubsat Constellation
There are some unexpected Amateur satellites in the recording, as they happened to be over the horizon at the time of the pass.
Daniel Estévez

GPS timing for JT modes
Not many amateurs use GPS timing instead of a NTP internet timing.
PE4BAS

Project Amelia Earhart: work air mobile station as it travels the world
Here’s an opportunity for both ham radio operators and SWLs to log this special event air mobile station throughout June and July.
The SWLing Post

Video

Hamvention 2017 AMSAT Demonstration W3ZM Oscar 7 Satellite
Can Hams do some amazing things or what? W3ZM Radio Amateur Satellite Corp (N8HM, Paul) making 5 contacts at the 2017 Hamvention.
YouTube

Motorcycle mobile ham radio installations
Descriptive overview of two motorcycle mobile amateur radio installations: 2013 Zero S electric motorcycle with Yaesu FTM-10R radio and Comet SBB-5 antenna, 2003 Honda VFR800 with Yaesu FT-60R radio and Comet HP-32FHN antenna.
KA5D

The Spectrum Monitor — June, 2017

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

TSM Reviews: Yaesu FTM-100 DR: Amateur Friendly Digital Operating
By Mark Haverstock K8MSH

In 2013, Yaesu developed System Fusion, a format that retains backwards compatibility for analog along with FDMA-based digital communications. With the FTM-100DR, Yaesu has managed to create an affordable radio that integrates both analog FM and their C4FM digital modes into one package that accommodates digital users, while still keeping the analog FM crowd connected.

Early Radio Broadcasting: Publicity Stunts and Unusual Broadcasts
By John Schneider W9FGH

In the early years of radio, broadcasters were eager to explore the frontiers of the medium and found themselves in a continual series of “radio firsts,” similar to modern attempts to make it into the Guinness Book of World Records. To attract listeners, early stations sought new ways to make “radio history” by transmitting something that had never been heard before—weddings, broadcasts at sea, in the air, even under the water. In many cases such broadcasts served no purpose but to entertain and fascinate.

Using Weak Signals Software to Reach for the Sky
By Robert Gulley AK3Q

Many have no doubt heard of renowned physicist Joe Taylor K1JT, or at least JT65 or JT9 software. But weak signal mode software has progressed leaps and bounds since the introduction of these modes only a few short years ago, thanks in part to some great contributions from people around the world. The WSJT-X suite of software represents the outgrowth of these modes, and its latest incarnation, v. 1.70, has added even greater capabilities.

FCC Rewrites some Rules for CB/FRS/GMRS/MURS and Amateur Radio
By Ken Reitz KS4ZR

The FCC has recently released its Report and Order (R&O) regarding amendments to Parts 2, 15, 80, 90, 97 and 101 of the Commissions rules concerning, in part, CB, FRS/GMRS and amateur radio. We take a look at how these rules might affect your operating (spoiler alert: there’s still no sound effects or music allowed on CB!).

TV Band Re-packing Report: New Channel Assignments by TV Market
By Mike Kohl

Information has continued to be released by the FCC on the repacking of TV channel frequencies across the US. This has given Mike the opportunity to create some listings by TV market on what the local spectrum should look like at the end of the process. In this installment, TV markets are listed starting with the largest number of viewers in each market. New York, Los Angeles and Chicago top the listings, and this month we cover from Market #1 to #57 (Richmond, Virginia).

Scanning America
By Dan Veeneman
Details on Whistler’s Legacy Scanner Upgrade Offer

Federal Wavelengths
By Chris Parris
Federal Use of Wireless VoIP

Utility Planet
By Hugh Stegman
Historic NSS Call Sign Returns to the Air

Shortwave Utility Logs
By Hugh Stegman and Mike Chace-Ortiz

Digitally Speaking
By Cory GB Sickles WA3UVV
The DV Landscape in Xenia, Ohio

VHF and Above
By Joe Lynch N6CL
TW Antennas and 6-Meters: Part Two

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Six-Meter Success: You Don’t Need Much!

Radio 101
By Ken Reitz KS4ZR
Over-the-Top and Cord-Cutting: Part 2

Radio Propagation
By Tomas Hood NW7US
Summer Tropospheric Propagation and VHF DX

World of Shortwave Listening
By Andrew Yoder
Pirate Shortwave Radio Mysteries

The Shortwave Listener
By Fred Waterer
Changes in International Shortwave Broadcasting

Amateur Radio Satellites
By Keith Baker KB1SF/VA3KSF
Portable Amateur Radio Satellite Antennas in Action

The Longwave Zone
By Kevin O’Hern Carey WB2QMY
Next Up: 2200-Meters

Adventures in Radio Restoration
By Rich Post KB8TAD
Restoring a Heathkit DX-60 Transmitter

Antenna Connections
By Dan Farber AC0LW
Closer to Daylight: Antennas at VHF and UHF

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.


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  • Matt W1MST, Managing Editor