Archive for the ‘Uncategorized’ Category
TX Factor Episode 11 is Here!
In this episode we complete the story of one Devon school in their attempt to be one of the ten UK schools to take part in the recent amateur radio link-ups with Tim Peake aboard the International Space Station.
We go behind the scenes with the ARISS team to meet the members and see the technology that made the link-ups such a great success.
We hope you enjoy the show!
TX Factor Team
Amateur Radio Weekly – Issue 114
2016 Hamvention attendance up slightly?
General chairman of the event said attendance this year may have been up slightly from 2015.
ARRL
Can we use a Raspberry Pi model B as FreeDV modem?
I am going to try using them as a headless FreeDV modem similar to the SM1000.
OZ9AEC
6 meter collinear antenna
I like to keep my antennas simple and cheap by using wire as the basis for everything.
High on Solder
Shield Hat: Signal Proof Apparel
It has shielding effectiveness 55dB-65dB from 10 MHz to 4 GHz. Silver is also antibacterial, antimicrobial, antiodor and antistatic.
Shield
Custom 19″ cabinet for a portable repeater
A 19 Inch rack mount is a standardized frame or cabinet for mounting equipment modules.
NT1K
How is Amateur Radio in your country?
European Radio Amateurs’ Organization’s survey wants to determine the current status of amateur radio in your country.
ERAO
Adventures with software defined radio
The SoftRock RXTX Ensemble seemed highly respected and has been available long enough to develop a good user base.
M0SPN
Video
NPOTA Activation: Expect the unexpected
W3ATB shares his NPOTA activation of Saint Gardens (NS60) in New Hampshire on June 1, 2016.
W3ATB
KD2GTM’s Hamvention Recap
All about my experience at my first Hamvention!
KD2GTM
The Transistor: 1953 documentary, anticipating its coming impact
The intent of the film was clearly to give the public of that era their first understanding of what a transistor was and why it mattered so much.
AT&T Tech Channel
The Spectrum Monitor – June, 2016
Stories you’ll find in our June, 2016 issue:
TSM Reviews: Finally, a Mobile Shortwave Radio that Works
By Thomas Witherspoon K4SWL
Every scheme to receive shortwave radio inside the typical sedan or minivan has its shortfalls, some far greater than others. Now there is a product on the market that not only makes listening to shortwave in the car possible, but actually easy. Shortwave listening guru, Thomas Witherspoon K4SWL, literally takes the new BST-1 mobile shortwave receiver for a spin.
Monitoring Russian HF Military Networks
By Tony Roper
This month, military monitoring specialist, Tony Roper, is sticking with the current theme of monitoring the Russian military networks, starting with yet another mission by the Russian Air Force with a pair of their Tu-160 Blackjacks circumnavigating the UK, down into the English Channel between England and France. Then he follows elements of the Russian navy, tracking them as far as Antarctica, all from the comfort of his home listening post in Scotland.
Wi-Fi Radio Primer Part 3: Two Wi-Fi Radios
By Thomas Witherspoon K4SWL
In April Thomas discussed what makes Wi-Fi radios “tick”––their ability to find radio stations via radio station aggregators. In May he took a quick look at various Wi-Fi radio manufacturers whose models use proper aggregators with market longevity, with reviews of the C.Crane Wi-Fi and Sangean WFR-28 Wi-Fi radios. In the finale, he looks at two completely different Wi-Fi radios—the Grace Digital Mondo and the Amazon Echo.
Your TV System is Changing – Again!
By Mike Kohl
Remember the Great ATSC digital TV conversion of 2009? Now, it’s about to happen again, this time with ATSC 3, a new digital TV scheme that will also require “repacking” the Over-the-Air TV band—all for the benefit of Internet delivery over wireless devices. Mike tells us how this will affect us all.
TSM Reviews: Icom IC-7300 Button and Knob SDR Transceiver
By Mark Haverstock K8MSH
In a world of increasing noise, requiring even better filtering and signal processing than ever before, Software Defined Radio (SDR) is rapidly becoming the logical way to go. Icom’s introduction of the new IC-7300 is shaking up an HF transceiver market that has been complacent for the last 15 years or so. Mark notes, “With the 7300, you get the benefits of direct conversion SDR without the rig being tethered to a computer. This makes it easier for portable and field use.”
Your New CB “Good Buddy,” the SDR Dongle
By Mario Filippi N2HUN
TSM regular contributor, Mario Filippi N2HUN, is always finding new uses for the inexpensive SDR dongle. This time he has turned his attention to the world of Citizens Band radio. He recalls the colorful history of CB in the US and listens in to stalwart CB operators today from around the country and across the Atlantic, undeterred by propagation and the declining solar cycle.
Scanning America
By Dan Veenaman
New Scanner News; Ocean City, Maryland
Federal Wavelengths
By Chris Parris
More Summer Vacation Scanning
Utility Planet
By Hugh Stegman NV6H
Spring 2016 “Numbers” Update
Digital HF: Intercept and Analyze
By Mike Chace-Ortiz AB1TZ/G6DHU
Reader’s Questions and an Update on US SHARES NCS PacTOR Network
HF Utility Logs
By Mike Chace-Ortiz and Hugh Stegman
Digitally Speaking
By Cory Sickles WA3UVV
Beer-Budget Digital Repeater Project
VHF and Above
By Joe Lynch N6CL
June: The Month of VHF and Above Contesting
Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Tales of Junk Boxes and Counterfeit Parts
Radio 101
By Ken Reitz KS4ZR
FM Radio Reception Part 1: Stalking the FM Band in a Time of Excessive Translators and Boosters
Radio Propagation
By Tomas Hood NW7US
Propagation and Field Day 2016
The World of Shortwave Listening
By Andrew Yoder
NYC FM Pirates; Atlantis Radio on MW and FM Pirates in China
The Shortwave Listener
By Fred Waterer
New SW Programs and Korea: North vs. South
Amateur Radio Satellites
By Keith Baker KB1SF/VA3KSF
Yet More AMSAT History
The Longwave Zone
By Kevin O’Hern Carey WB2QMY
Summer Strategies for LW DX
Adventures in Radio Restoration
By Rich Post KB8TAD
Another Heavy Hammarlund HQ-129X Part 2: Voltage and Alignment
Antenna Connections
By Dan Farber AC0LW
Antenna Improv: Portable and Temporary Antennas
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 113
Yaesu FT-891 update
The Yaesu FT-891 is the smallest and lightest 100W HF transceiver ever built at 155x52x218mm and 1.9Kg. Unfortunately, the 2A current draw on standby makes it unsuited for truly portable operations.
QRP Blog
2016 Dayton Hamvention: Exhibits Photos
Extensive photoset of Hamvention exhibitor spaces.
The SWLing Post
The Hamvention Takeaway
You’re looking at about two football fields worth of parking spaces, filled with cars, tents, and collapsible tables and the strangest electronic devices you’ve ever seen.
Hack A Day
Photo tour of the 2016 Dayton Hamvention Flea Market
Weather at the Dayton Hamvention was quite pleasant–cool and partly cloudy.
The SWLing Post
Hamvention wants a future at Hara Arena
The Dayton Amateur Radio Association plans to stay at Hara for “as long as (they) draw breath.”
myDayton Daily News
$25 satellite tracker
I found a $25 pan and tilt solution, meant for mounting cameras from drones.
Paul’s Projects
80 meter inverted L
I needed a cheap and relatively unobtrusive solution and I found one in Len Paget’s (GM0ONX) design for an inverted L.
AmateurRadio.com
FCC denies petition for consideration in vanity call sign dispute
An Arizona radio amateur has been unsuccessful in convincing the FCC to take a 1 × 2 vanity call sign away from its present holder and grant it to him.
ARRL
HF portable ops solar powered
My power source for the Yaesu FT-857D is my 12 volt power can with the batteries being maintained by the two solar panels.
Jerry’s Journal
Is pirate radio still a problem in the digital age?
We are examining why ‘pirate’ radio persists despite the existence of legal alternatives to unlicensed broadcasting.
Middlesex University London
Video
QRP DX from Livermore Falls
Tim W3ATB and I went up to Livermore Falls in Plymouth today. I worked North Carolina, Austria, Scotland, Lithuania, and Germany.
I setup the KX3 and a 29 foot vertical wire with a 9:1 unun above the railroad track overlooking the falls. As soon as I turned on the rig, I heard Joe W2KJ working another station on 14.060. When he was done I called him. He was running 4 watts with a KX3. We had a really nice chat. There were a few dips with QSB, but solid copy both ways. Joe was a strong 599 at the beginning and faded a bit toward the end.
I moved down the band and heard GS3PYE/P in Scotland working stations. We exchanged 599s and when I was finished, I heard Tim work him. Tim was about 100 yards to my north sitting on the hillside right near the track.
A little further down the band LY/ES5ZF was working stations. We exchanged 599s, then I went briefly to 17 meters to see if the band was open. To my surprise there was GS3PYE/P operating again. We had a second QSO on 17 meters. Then I packed up and walked down to Tim’s operating position. He was running a setup just like mine… KX3 and 29 foot vertical wire with a 9:1 unun.
We had a picnic lunch and then tuned around the band a final time. There was DP65HSC calling CQ and working stations. Both Tim and I had trouble sorting out his call sign, partly because he was going so fast, but also because the call is a bit of a CW tongue twister in itself. Turns out it was a special event station celebrating the 65th anniversary of the High Speed Club in Germany. Tim worked him after I did.
It was an absolutely gorgeous morning and the bands were in pretty good shape. After a fantastic time operating, Tim and I packed up and headed back to the car.
Molokai, Hawaii 2016
Judy and I went to Hawaii for 10 days for our daughter’s wedding. The wedding was fantastic… and there was even a little ham radio. I brought the HB-1B and worked PA, Mexico, AR and AZ. Conditions were pretty awful… but the view was the best!
The HB-1B was powered by 8 AA cells. I used the little QRP Par End Fed trail model antenna. 40 meters was just noise every time I tried. 20 meters was only barely better. I set up a few times at our daughter’s house in the hills. I only made one QSO… with N3RS, Ron in Pennsylvania. He was booming in, but he could just copy my callsign and RST. He gave me a 349. I was discouraged.
For the wedding we moved down to a cottage on Kepuhi Beach on the west end of the island. I only operated once because of the busy schedule. I made more QSOs from the beach, but still didn’t get any good signal reports. I strung the End Fed to a near by sea grape tree (I think) and ran it as a sloper from the porch of the cottage. Myna birds called out from the branches and the waves and wind provided plenty of background noise.
From here I worked Mexico, Arkansas and Arizona. Here’s my log:
16 May-16 0234 14.005 XE2MVY CW 559 599 Mexico
16 May-16 0243 14.060 K5EDM CW 229 579 AR Greg
16 May-16 0303 14.024 K7HP CW 449 599 AZ Hank
After the QSO with Greg K5EDM, I sent him an email to let him know I was in Hawaii. He sent back that he’d never worked Hawaii before. “Your signal was right in my noise. I copied your call sign but only because you sent it several times. ” He was running 25 watts with a dipole at 35 feet.
Operating from Hawaii with QRP is really challenging. It’s thousands of miles to the nearest land mass, and the propagation is often fickle. The timing and conditions have to be just right. I had the best luck late in the afternoon Hawaii time.
While I was there I worked the EARCHI net (on Oahu) on VHF with a handie talkie. From the west end, I could see Oahu rising above the water in the distance. So it was fun to work them on 2 meters. I told them I use the 9:1 unun all the time from home and thanked them for that successful project.
Amateur Radio Weekly – Issue 112
New D-STAR HT from Kenwood
Tri-band, D-STAR, APRS included. Rumors of August availability at $600.
AmateurRadio.com
New Yaesu FT-891 mobile HF rig
It covers 30kHz to 56MHz on receive and transmits in the amateur bands from 160m to 6m with 100W output.
QRP Blog
HamRadio360 interviews Elecraft co-founder, discusses new KX2
Elecraft gives first peek into the new KX2 transceiver.
HamRadio360
[PDF] Elecraft KX2 brochure
Elecraft
[PDF] Elecraft KX2 data sheet
Elecraft
[PDF] Elecraft KX2 FAQ
Elecraft
Video: KX2 in action for SOTA activation
Elecraft KX2 and KX3 Transceivers in action, side-by-side
WG0AT
DV4home announced, supports D-STAR, DMR, dPMR & P25
The DV4home features direct Internet transceive mode using the microphone and the external speaker.
Wireless Holdings
Uniden announces DMR support for its flagship scanners
Uniden has announced that its flagship BCD436HP and BCD536HP HomePatrol series scanners will soon support DMR monitoring.
VA3XPR
Dayton Hamvention AMSAT demonstration plans
A special demonstration on SO-50 will take place during the 12:19pm (16:19 UTC) pass on Saturday May 21st.
AMSAT
Hackaday at Hamvention
The main purpose of my visit is to document the immense swap meet. There will be over a thousand vendors hocking their wares, from antique radios to gauges and other electronic paraphernalia.
Hackaday
ARRL CEO want to hear from you at Dayton
ARRL CEO Tom Gallagher, NY2RF, said he’s looking forward to hearing in person from ARRL members when he makes his inaugural appearance at Hamvention.
ARRL
DX Engineering announces new acquisitions
DX Engineering has acquired exclusive rights to Clifton Laboratories’ ham radio product line, and it has purchased TW Antennas.
ARRL
Experience Hamvention remotely
Check out some of the webcasts that will emanate from Hara Arena during the big show.
ARRL
NPOTA activations while bound for Dayton
En route to the 2016 Dayton Hamvention, I’m doing a few National Parks On The Air (NPOTA) activations with my my buddy, Eric (WD8RIF).
The SWLing Post
CubeSats with Amateur Radio payloads deploy from ISS
The Slow Scan Television (SSTV) satellite STMSat-1, built by Elementary students at Saint Thomas More Cathedral School (STM), was deployed along with the pair of NODES CubeSats built by students at Santa Clara University.
AMSAT UK
Television signal DXing
Would pristine digital signals make it harder to find unusual stations? And with so many TVs offering digital channel-scanning functionality, would the heavy tweaking so often needed to bring a channel to life eventually make TV DXing impossible?
Motherboard
habhub: Complete high altitude ballooning software tool set
Tracking system, predictor, car chase apps, SSDV, more…
habub
Ham Radio Mesh Networks – fun and fulfilling
The concept is to take commercial off-the-shelf technology and re-purpose it into a mesh data network.
AmateurRadio.com