Archive for the ‘Uncategorized’ Category

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
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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
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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.

Amateur Radio Weekly – Issue 158

Hamvention 2017 Review & Interviews [podcast]
A new look with a familiar feel in an all new Venue… and it was really a good day!
HamRadio 360

2017 Hamvention Report
The short story is that we had a blast and the new location is an improvement over Hara.
K0NR

Reflections on Hamvention 2017
I cannot overstate how little I miss the nasty old Hara. Though I knew where things were and like an old pair of shoes, there was a certain comfort in familiarity… the place simply sucked.
K9ZW

2017 Hamvention photos: Inside Exhibits
The following photos were taken in the main Hamvention buildings at the Greene County Fairgrounds.
The SWLing Post

2017 Hamvention photos: Flea Market
I’ve posted well over one hundred photos I took at the Hamvention Flea Market.
The SWLing Post

MFJ-1026 Noise Canceller tests
Mark, VA7MM, has been testing out his newly-acquired MFJ-1026 Noise Canceller and has provided several videos of the noise canceller in action.
AmateurRadio.com

How to play chess on CW
You can use chess notation to send moves and play chess games on the radio. The CARI group often met on the air to play informal games and tournaments.
KB6NU

The portable solar power station: You CAN have it both ways (sort of)
Many hams would like to have it both ways: Powerful enough to do something besides charge batteries or push a QRP radio while compact and light enough to hit the road.
Off Grid Ham

Video

Icom IC-7610 preview at Hamvention
This radio has 2 receivers, the equivalent of two IC-7300.
YouTube

Flex-6600M preview at Hamvention
Here’s a preview of the Flex-6600M. (M stands for Maestro, with display.)
YouTube

Six meter ham radio dipole for the VHF contests
Get on the 6m magic band during the second weekend of every June for the North American VHF contest.
KA5D

Digital Trunked Scanning Using SDR
Cheap, digital trunked scanning using RTL-SDR for the absolute beginner.
YouTube

Amateur Radio Weekly – Issue 157

Flex Radio announces New Flex-6400, Flex-6600
“M” versions include a large touchscreen and physical knobs on the face of the unit.
Flex Radio

2017 Hamvention: setup day photos
Since the Greene County Fairgrounds lack the number of indoor exhibitor space, they are using large white event tents to add covered square footage.
The SWLing Post

Updated band chart available from ARRL
ARRL has revised and updated its “US Amateur Radio Bands” charts, and these now are available for download.
ARRL

JT-Mapper: Real-time JT65 and JT9 Maps
I’ve found myself constantly looking up grid squares while trying to get a sense of the band’s propagation. With all this information already in my computer, I decided that my computer could do more to visualize my radio environment.
WG1V

Meteor Detector for HDSDR
Analyse the automatic real time waterfalls from HDSDR to locate meteor scatter.
M0CYP

Contemplating remote ops
The city council decision to deny my request for ANY antenna has stood and I think I’ve given up pursuing any kind of external antenna at the current QTH.
W0EA

All Amateur satellites
A comprehensive list of all Amateur Radio satellites including modes and frequencies.
JE9PEL

FreeDV 700D – First Over The Air Tests
I’m impressed! Conditions were pretty bad on 40m, the band was “closed”. This is day 1 of FreeDV 700D. It will improve from here.
Rowetel

Portable HF operations
With everything ready to go, I turned on the transceiver to find the bands alive with good strong signals being received on 20 meters from across the US as well as further south into Mexico and South America.
Jerry’s Journal

Video

Review: Military 2.0 Multiband Tuner Free HF Alpha Antenna
The antenna covers the 80-10 meter Bands.
Videos by Mike

My first Summits on the Air Activation
Activating Shovel Mountain, located in Central Texas, USA, W5T-NT033.
K5ACL


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  • Matt W1MST, Managing Editor