Archive for the ‘Uncategorized’ Category
Amateur Radio Weekly – Issue 121
Radiosport vs. Pokémon GO
It should come as no surprise that ham radio operators are drawing comparisons between Pokémon GO and Amateur Radiosport.
ARRL
Growing 6m JT65 activity
On several occasions this week, I have heard or worked dozens of others on JT mode while the bottom end of the band appears void of signals.
AmateurRadio.com
North Korea activates numbers station
A female announcer at the radio station read numbers for two minutes on 24 June and 14 minutes on Friday.
The Guardian
What’s In your rubber duck?
I often refer to the rubber duck as The World’s Most Convenient Crappy Antenna.
K0NR
Life as a blind radio Ham
Anyone can join in the conversation and sometimes you find yourself talking to a dozen or so people across the ends of the Earth.
Largs & Millport
Smartphone vibration motor as microphone
Two researchers from the University of Illinois at Urbana-Champaign have devised a method for turning vibration motors, like the ones found in smartphones, into makeshift microphones, capable of recording the sound around them.
Southgate
How to: GPS spoofing (to hack Pokémon GO)
As satellite GPS signals are very weak while receiving on earth, transmitted signals with the HackRF will be very strong in comparison
Insinuator
A speaker mic NOT to buy
I’m guessing this one didn’t pass through quality control, if there is such a thing at the Baofeng factory.
Digital Mobile Radio
Receiving WSPR with RTL-SDR
Direct sampling mode allows you to receive HF signals on an RTL-SDR without the need for an upconverter
RTL-SDR.com
Amateur Radio Weekly – Issue 120
New: Baofeng UV-50X3 tri-band mobile
Baofeng just launched the UV-50X3 triband mobile radio and it looks like a jab, cross and left hook to the established Japanese manufacturers who were caught dreaming about DMR, C4FM, D-STAR and other leprechauns.
QRPblog
Chinese radio makers versus the big leagues
Have I been burnt or disappointed? You can bet your bottom dollar I have, and many of my reviews and past blogs would tell you that.
AmateurRadio.com
Attendance at Dayton tops 25,000 for second year in a row
For those keeping track, in 2014 the official count was 24,873 visitors, and attendance in 2013 was 24,542.
ARRL
Ham radio decline in Germany
In 2002 there were about 80,000 radio amateurs in Germany, by 2015 this had fallen to 67,349.
Southgate
VU3DES: Passing a ‘Technician Class’ US License exam
FCC FRN registration has clear options for applicants without an American Contact (mailing) Address. Using the FRN I could fill out the exam application forms and appear for the exam.
VU3DES
What’s special about 50 ohms?
A cable that has least loss at 77 ohms, also has maximum power handling capacity at 30 ohms. The mean between 30 and 77 ohms is 53.5 ohms.
Hack A Day
My Jeep portable Ham Radio station
Amateur radio is part of our gear. There are times when cell service is unreliable, trails are unpopulated, or we intentionally move off the grid. The Willys offers us an opportunity to expand our use of amateur radio as part of our leisure activities.
N4AE
A guide to listening to CB radio with an RTL-SDR dongle
Mario discusses how an RTL-SDR dongle can be used to have some fun listening to CB without needing to go out and buy a full CB radio.
RTL-SDR.com
Interference from an LDG autotuner
Hans did suffer from heavy noise (S9) on his FT-817 affecting his receive especially from digital weak signals like WSPR and JT modes.
PE4BAS
rtl-trx: Transmit and receive RTTY using an RTL-SDR dongle
Local oscillator leakage from an RTL-SDR dongle can be used as a very low power FSK transmitter.
GitHub
Ham radio tower frustrates neighbors
For 10 years, residents of a Maple Ridge neighbourhood have been fighting to have an amateur radio tower taken down, but a coalition of ham enthusiasts says they’re providing a valuable service.
CBC
Video
W7L Seven Lakes
YouTube
Crossbow antenna launcher
KF7IJZ
DX from the Swimming Hole
It was hot today, so Judy and I drove up to Sky Pond for a quick swim. I brought the KX3 and worked Sweden and Virginia.
The pond is pristine and in the middle of nowhere. As soon as we got there, I jumped in the water for a quick swim. Judy swam way out into the pond and I came back to shore and tossed a wire in a tree by the water. I set up the KX3 on 20 meters and tuned around. Boy… is propagation bad! But then… a station
coming out of the noise. 7S70AT.. what the heck is that? As luck would have it, he answered and we made the QSO. I pulled out my cell phone and checked the call… Sweden… a special event.
Then I went to 40 meters. Not many stations here either. But fortunately Ed KG4W in Virginia was just finishing up a QSO and we moved up 1 kHz and had a nice chat. He gave me a 579. I told him it was 84F and hot here today, and that I was swimming at the pond. He set me straight by explaining that it was 92F at his house… now, that’s hot!
After working Ed, I packed up and Judy and I drove home much refreshed. It’s amazing what a swim and a couple of QSOs will do on a hot day.
Chinese radio makers versus the big leagues, my perspective
I have been a ham radio operator for most of my life, was a shortwave listener from my teens and still am, and of course was able to play in the CB craze that took place in the late 70’s and into the 80’s. High school was where I got my start at amateur radio and electronics. I am not an electronics technician, nor will I ever admit I am even close, but I am a guy who has had a blast and an addiction to ham radio, mostly QRP, CW and portable ops. Combine that with my addiction of outdoors, winter survival, canoeing, hunting and camping and those are some $eriou$ hobbie$. Oh and I cannot forget photography, heaven forbid..
In the radio hobby I like to play, test , trade , and swap gear all the time to use, if it is new I want it. Portable and low power gear and small antennas is where I like to be, but where am I going with this? I have owned, Heathkit, Swan, Kenwood, Icom, SGC, Yaesu, Hy-Gain, Tokyo, Index Labs, OHR, Alinco and more gear in the past as well as Elecraft whom I think I can throw in with the big boys as they have come the furthest out of the small guys.
Recently in the last few years I have been playing, testing, reviewing, been a beta tester, manual writer for a few of those in the Chinese market, (oh and lets not forget the European market as well, we are seeing rigs from Greece, Russia and all over). Among those is my friend Yimin who lives just outside of Toronto and is the owner of Youkits Canada. Yimin has tried his hardest to put out quality gear at a price that won’t break the bank. Some in kit form and others assembled, and still backs it up with support and returns, unlike some of the other builders out there.
On the market today we see Xiegu, Bofung, CRK Kits, BG2FX with his FX line of gear and others. I have had the Xiegu X1M, neat little rig but had many quirks. I have the X108G which has come light years ahead since it’s first days of life and still continues to get better, Xiegu also offers support, firmware upgrades and a return policy, they have gotten to be a fair size company.
What makes some of this Chinese gear look so good? Is it the fact that the price tags seem lower then the big guns on the market ? Does it stand up to quality control testing that the big guns do? Is it clean on transmit evading those spurious transmissions? These maybe some of the questions that get asked. For me it is just that I like new toys and like to play. Have I been burnt or disappointed? You can bet your bottom dollar I have, and many of my reviews and past blogs would tell you that. But I still like to play with this gear and see how it works. Dollar wise is another topic that is a hard one to stomach as most producers be it in China or other Countries sell in US$, so for me as a Canadian whose dollar is less, the exchange kills, and makes these radios no cheaper in the long run, tag on the fact that shipping from Canada is also very costly if I need to ship back to China, so how do you win?
Of all the radios that I was most disappointed wit it was the KN-920 that was built by I believe BA6BF and was sold via Aliexpress and a few other warehouse dealers. The KN-920 one weekend blew it’s finals burnt some of the PC board off. It was still under warranty but to ship back would have cost huge dollars. The builder send me 3 sets of finals to try replace with same result each and every time, the seller at Aliexpress was only concerned with the money he was going to lose if I was to get or return the item, at this point the consumer, customer or other meant $hit. I see on ebay they have a KN-850 now, I hope they learned something from it, but highly doubt it. Top that with no manuals, no instructions etc. Many of these builders do not speak English as is the case of BG2FX who builds the FX series of radios.
So why do we still buy or have a thirst for new gear? It is because we all want to play and not break the bank. Or in my case , that is it. I own a KX3 and just bought a KX2 for canoe trips, camping and more because it is self contained, small and does all bands and modes including digital , and also serves as a shortwave radio when out in the wilds.
So is all Chinese gear made the same ? I think not, some builders are using recycled products, out of tolerance products, solder that creates whiskers (both in part to lack of heat and the elements that make solder real , like tin and lead) and put together in their homes or offices and then put out into the market. Other builders like YouKits and Xiegu have put some thought into their builds and ideas and have actually looked at it from the consumer side, oh yea, there will be horror stories, but in my ham career I can tell you some about the big 4 as well in the past, mention IC-706 and see how many feathers have been ruffled and how long to get that beast right.
I need to add as a caveat that of all the portable Chinese radios that I have tried and do own, the HB1 series by Youkits is my favorite as a cw qrp rig. I own the MKII and MKIII and take those up North with me on a regular basis as they are also self contained with battery, light weight and cover the bands I use.
Just a quick intro to my YouTube Channel and look at a few of the rigs in action using the same antenna.
Have a great summer one and all, and don’t forget to practice your emergency plan, have a 72 emergency kit ready and stay safe on the road, lakes, fields or where ever you may be.
Again this is just my perspective.
Cheers
Fred Lesnick
VE3FAL
Thunder Bay, Ontario
Canada
Amateur Radio Weekly – Issue 119
Into the Digital age
One of the reasons for the rapid growth of DMR over D-Star and Fusion is the availability of relatively inexpensive DMR radios for amateur operators from Connect Systems and Tytera.
Digital Mobile Radio for Hams
A Radio Amateur’s guide to solar panels
Solar panels that cost over $6.00 per watt a decade ago are now available for less than $2.00 per watt. Solar is on the cusp of becoming mainstream.
Off Grid Ham
New podcast: The Workbench
Over the next several episodes, we will deep dive on information, tips, and gear needed to setup and equip your own workbench.
The Workbench
Elecraft KX2 Go Box
The project uses a water tight Pelican 1050 brand enclosure.
VA2SS
Solar Analysis Paralysis
Don’t have gear or antennas for the low-bands? Time to make an adjustment to your equipment and antenna portfolios.
KE9V
China fits final piece on world’s largest radio telescope
The 500m-wide Aperture Spherical Telescope, or FAST, is the size of 30 football fields.
BBC News
N9EWO Review: Icom IC-7300
You can usually get a better deal with more features in a Ham transceiver and the lack of tabletop receivers these days.
N9EWO
Dear ARRL, HR1301 is Hogwash
Your homeowners association can keep you from running a simple wire antenna.
N4AE
K8BL achieves Satellite WAS after 40 years
His contacts spanned 38 years, and he submitted QSL cards to claim the award.
ARRL
Serially, are you syncing or asyncing
Synchronous communication makes the receiver’s job easier by adding a third clock line to the ground and signal lines. This is the clock the transmitter uses to shift out the bits.
Hack A Day
Video
Yaesu FT-1000MP Repair
Follow along as Paul at Mr Carlson’s Lab shows the troubleshooting and repair steps involved in making a Yaesu FT-1000MP work again.
YouTube
24 hours of JT signal reception
This video shows which stations can be received using the JT65 and JT9 digital modes throughout 24 hours on 20m/14MHz, & how propagation changes during the day.
M0CUV
The Spectrum Monitor — July, 2016
Stories you’ll find in our July, 2016 issue:
Touring the WJZ Transmitter Site in Bound Brook, New Jersey—1925
By John F. Schneider W9FGH
This month, John takes us on a tour of WJZ, NBC’s Blue Network station in New York, which debuted on October 1, 1921. Founded by Westinghouse Electric, the station was originally located in a shack, accessible only by ladder, on the roof of a Westinghouse factory located at Orange and Plane Streets in Newark, New Jersey. This was Westinghouse’s radio station – preceded by KDKA in Pittsburgh and WBZ in Springfield, Massachusetts. The 500-watt WJZ transmitter was an exact duplicate of the one built for KDKA.
TSM Reviews: Yaesu FTM-3200DR Digital/Analog 2m Transceiver
By Cory GB Sickles WA3UVV
In mid-March, Yaesu surprised just about everyone with the announcement of a new transceiver, capable of analog FM and System Fusion operation. The FTM-320 (DR/DE) is a 2-meters only, 65-watt radio, with front-facing speaker and a simple black-on-amber, dimmable display. Its small dimensions mean it can fit just about anywhere. With a current street price of $180, he believes many hams are destined to be looking for just such a spot.
How to Become an EMI Detective
By Mark Haverstock W8MSH
In a world full of electronic technology, it’s inevitable that there will be an increase in electromagnetic interference (EMI), especially on HF bands. Computers and their peripherals are the biggest offenders, causing a host of problems for those of us in the radio hobbies. Not far behind are the infamous AC power supplies known wall-warts and power bricks. And don’t forget the plasma televisions! Mark shows how to diagnose your EMI problems and how to fix them.
Tube Tester Basics: Understanding and Restoring Emission Testers
By Rich Post KB8TAD
It’s useful to have at least one tube tester around for basic checking, especially for tubes for which you have no spares or as a relative measure of quality. But, all tube testers make compromises in testing. The most basic tester and the one most commonly seen is for emission which measures the cathode current relative to its target average. The typical emission tester also includes a test for shorts and leakage between the elements of a vacuum tube. Leakage and shorts are always tested first since an emissions circuit and meter can be damaged by a shorted tube.
Free-To-Air Satellite Update Mid-Year 2016
By Mike Kohl
Change is a constant in the field of Free-to-Air (FTA) satellite-TV. While some channels continue as they have for nearly two decades, others, particularly the last of the DigicipherII subscription channels may be on life-support. FTA satellite-TV expert, Mike Kohl, reviews all of the C and Ku-band satellites viewable to North American locations and explains what you might expect to find on those channels.
Scanning America
By Dan Veenaman
APCO P-25 Explained; Scanning Creek County, Oklahoma
Federal Wavelengths
By Chris Parris
DMR Scanning Finally Here!
Utility Planet
By Hugh Stegman NV6H
HF Fax: Radio with Pictures
Digital HF: Intercept and Analyze
By Mike Chace-Ortiz AB1TZ/G6DHU
Update on NATO STANAG4285 2400 baud HF Modem Activity
HF Utility Logs
By Mike Chace-Ortiz and Hugh Stegman
Digitally Speaking
By Cory Sickles WA3UVV
Digital Dayton
VHF and Above
By Joe Lynch N6CL
ARRL June VHF Contest
Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Old Trees, Old Towers, and Living to a Ripe Old Age
Radio 101
By Ken Reitz KS4ZR
FM Mayhem Part 2: A Little Help from a 16-Element Quad-Stacked Array
Radio Propagation
By Tomas Hood NW7US
The Solar Wind
The World of Shortwave Listening
By Keith Perron
Inside the Voice of Korea
The Shortwave Listener
By Fred Waterer
Greek, Country, Gospel Music and More
Maritime Monitoring
By Ron Walsh VE3GO
Change is Inevitable
The Longwave Zone
By Kevin O’Hern Carey WB2QMY
472-479 kHz (& Vicinity) Update
Adventures in Radio Restoration
By Rich Post KB8TAD
Finishing the Hammarlund HQ-129X Part 3: Those Modifications
Antenna Connections
By Dan Farber AC0LW
Antenna 101: Let’s Review the Basics
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 118
Sun has likely entered new evolutionary phase
The Sun is in the process of crossing into its magnetic middle age, where its 11-year Sunspot cycles are likely to slowly disappear entirely.
Forbes
13 Colonies Special Event
All HF bands will be in play, including the WARC bands, with the exception of 60 meters. Simplex on 2 meters and 6 meters is encouraged.
13 Colonies
Folded Skeleton Sleeve Antennas
The design is a unique way to build a dual-band resonant dipole or groundplane vertical.
High on Solder
Hams could be superheroes when the earthquake hits
When the big one hits, one of the best technologies to rely on for communication may not be cell phones or computers.
KUOW
Middle Tennessee Ham Quest
The Greater Nashville & Middle TN Ham Quest is a new project dedicated to combining traditional Hamfest elements with less traditional offerings that will help to unite the Ham community.
Ham Quest
K5EHX repeater search tool
Enter a city or zip code for near-by repeaters.
K5EHX
GQRX for digital signals
The idea was to show how GQRX can be combined with other software to use it’s nice GUI. With some plumbing, that’s easily possible.
Carriers Everywhere
How do you measure the success of Field Day?
I’m the president of our club, so if the experience isn’t great, then a large portion of the blame falls on me. After this year, I have a feeling some folks are ready to have me impeached.
KK4DSD
First Field Day as a CW operator
Field Day 2016 with the Knightlites QRP club.
Ham Radio QRP
Field Day 1929 style
The transmitter was a 27-24-24-865 job more or less straight out of July 1931 QST.
AmateurRadio.com
Direwolf: Software soundcard, modem/TNC and APRS encoder/decoder
It can be used stand-alone to observe APRS traffic, as a digipeater, APRStt gateway, or Internet Gateway (IGate).
WB2OSZ
Video
APRS timelapse
Video made of APRS screenshots from aprs.fi map.
DF2ET
Properties of different types of capacitor
Find out all about the different properties of the various capacitor types: electrolytic; ceramic; tantalum; plastic film.
YouTube
















