Archive for the ‘Uncategorized’ Category
Amateur Radio Weekly – Issue 126
High-speed imagery downlink making use of SSDV
In our payload, we use SSDV to compress images captured by a PiCam, then transmit them via 70cm FSK at 115kbaud.
SSDV
ARRL 2016 Simulated Emergency Test is October 1-2
Every local ARES team and/or ARRL Section will come up with their own scenarios and work with served agencies and partner organizations during the SET.
ARRL
End-Fed antenna revisited
I really like the simplicity of this antenna for many aspects: fast to deploy, works on many bands, no antenna to tune…
VA2SS
How to undertake a SOTA Activation – Step by step guide
It covers the set-up, spotting, operating procedure and tips and tricks I’ve picked up over the last few years.
Adventures in Ham Radio
Reflector Life
In a nutshell, IRLP links repeaters and individual nodes, like mine, with others via the Internet.
KE9V
A single lever paddle
The only paddle I have is a Bencher, which is a bit too heavy and cumbersome to carry in my backpack for a portable set-up.
AA7EE
NPOTA: Photos from weekend “two-fer” activation
My family visits national parks regularly, so it’s easy for me to pack a small radio, do a quick NPOTA activation all while incorporating non-radio activities that the family loves.
The SWLing Post
VDSL interference: A Ham operator’s nightmare
Unfortenately still sometimes we lost the complete DSL connection and in that case we had to wait for 5 minutes to get TV, internet and phone back online.
PE4BAS
Radio club coordinates energency response during cycling event
Huntsville Amateur Radio Club volunteers were instrumental in coordinating the communications amongst event organizers and volunteers, emergency personnel.
WHNT
AT&T’s New “AirGig” Not Your Father’s BPL
ARRL’s earlier anti-BPL campaign, and market forces, eventually led to the demise of the prior BPL initiative.
ARRL
AT&T Labs’ Project AirGig nears first field trials
AirGig could one day deliver low-cost, multi-gigabit wireless internet speeds using power lines.
AT&T
Timbuktu from the Pemigewasset River
The smell of autumn is in the air today. It’s beautiful and warm. Judy and I take a bicycle ride along the Pemigewasset River. I work Africa, Ukraine, Croatia and Spain.
We ride down along Needle Shop Brook and turn north along the river. There are fallen apples and brown leaves on the road. It feels and smells like fall. But it’s warm and still. A perfect day for a bike ride.
We ride about a half mile north and I see what I think is a piece of metal across the trail. I swerve quickly to avoid it, and realize it’s a snake! It slithers away into the grass. It’s a Northern Water Snake soaking up the warm, fall sunshine.
We ride perhaps 3 miles and I start looking for a place to set up the KX3. There is a sunny field to the west with some large maple trees nearby. Judy goes into the field and I throw a 30 foot wire over the branch of a huge maple.
I start out on 20 meters at the low end of the band. EO25U is calling CQ. We exchange quick 599s. This is Ukraine… a special event celebrating 25 years of independence. I tune up the band and quickly work AN400R… another special event… this time in Spain celebrating the life of Cervantes, the famous Spanish author of Don Quixote.
The photo below is my view while operating.
I switch to 17 meters. It’s active and right away I work 9A50CMB. This is the MARJAN Radio Club call in Croatia. Miki gives me a 559, and I tune up the band a little. Here is TZ4AM working stations. He answers me on the first call and gives me a 559. I didn’t know this station is in Mali, central Africa. I find out later when I look it up at home. Wow… the first time I’ve actually worked Timbuktu!
Now I pack up and head south to where we left the car.
These days are way too short. In just a few weeks New Hampshire Fish and Game will release pheasant in this area for hunters. Not an ideal spot for bike rides or radio.
Ch-ch-ch-ch-changes
By the end of this week my website pa2bx.nl will go down. The reason is simple: I will relinquish my Dutch call and no longer be PA2BX. The Dutch government started asking 31 Euros per year for maintaining a database with my call in it, while it used to be free. Not being stingy here. I know they also use the 31 Euros for other things that are beneficial for Dutch hams. But for me it’s just a little too expensive for something I use maybe once every 5 years. 31 Euros is a week’s worth of groceries in Taiwan and I have two big mouths to feed. I can re-apply for a new Dutch call any time, so nothing is lost.
Luckily my web provider is so cheap that I’m going to keep them and from the beginning of October you are welcome at BX2ABT.com (B–X to Any Bloody Thing). I’m testing a new CMS at the moment and it looks like the new site is going to be nicer and easier to maintain than before.
In other news: I broke with my QSL manager, which made me decide to stop with QSLing altogether. I make only a few QSOs nowadays and lost interest in QSL cards a bit (call it a mid-life crisis thing). I still have a stack of cards from my Longtan QTH, but once they run out I won’t have new ones printed. If you still need one of my cards, my address is on the BX2ABT HamQTH.com entry.
Amateur Radio Weekly – Issue 125
Amateur Radio Parity Act passes in the US House
“This is huge step in our effort to enact legislation that will allow radio amateurs who live in deed-restricted communities the ability to construct an effective outdoor antenna.”
ARRL
First VK-VE 630m contact
This is the first-ever QSO between North America and Australia on the relatively new 630m MF band.
VE7SL
Radio-Dakar QSL card sells for $1,195 on eBay
This QSL card started out life on eBay at $9.50 with free shipping.
The SWLing Post
Ham Nation: Hams Gone YL’ed
It’s an all YL cast tonight! We interview VA1YL, Amanda explains emergency situations, and a space weather update from Dr. T
TWiT
Get the right signal tone
One of the most common set of signaling tones is called the Dual Tone Multi-Frequency (DTMF) tone system, often known as Touch-Tones. This system was invented for use in telephone systems by AT&T in 1963.
Ham Radio School
Portable logging for iPad & iPhone
The upgrade to the water/dust proof case was just the ticket, despite it adding some bulk it really protects the device well.
M0JCQ’s Ham Blog
Review: BTech UV-50X3 tri-band mobile
Four years after its initial design, the VGC 6600PRO has evolved into the BTech UV-50X3, a full featured Tri-Band mobile that delivers a full 50W on VHF and UHF.
tri-band-review
Video
75 meter yagi installation
Installation of a 75 meter yagi antenna at W0AIH contest station.
YouTube
A teardown of the Kenwood TH-D74
YouTube
Amateur Radio Weekly – Issue 124
Air Force to ‘bomb the sky’ to improve radio reception
CubeSats could carry massive amounts of ionized gas to the ionosphere to create radio-reflecting plasma.
Prepared Ham
Smaller solar cycles ahead?
Data suggest that Cycle 24, the current solar cycle, will bottom out in 2020.
ARRL
Michigan State Parks on the Air
It looks like the program will get started next year.
KB6NU
Emergency preparedness: How will you communicate?
September is recognized as National Preparedness Month.
Icom America
The woman behind the KM5R repeater
Once upon a time there lived a home-schooled fairy princess named, Melissa, or as she later became known, KM5R.
Weekly North Texas net for YLs
YL International Single Sideband System
The ISSB System operates on 14.332 MHz, 365 days of the year.
YL System
September VHF Contest this weekend
The goal is to contact as many different stations in as many 2 × 1 grid squares as possible on frequencies above 50 MHz.
ARRL
Batteries for portable Amateur Radio use
I’ve used everything from car batteries, Sealed Lead Acid Batteries (SLAB), standard AA’s, Lithium Polymer (LiPo) and Lithium Iron Phosphate Batteries (LiFePo).
M0JCQ’s Ham Blog
Can you ID this mystery digital signal?
I noted beeps at Hz repetition rate, does not appear to be data, it beeps for about a minute then there is a short data burst then beeping again for a minute or two.
The SWLing Post
Video
VHF Transmitter key-up analysis
Based on what I learned about this radio, I won’t be operating it at the high power level due to the frequency drift.
W2AEW
Random wire portable antenna back yard test
I decided to try a random wire in the back yard with QRP power and portable set up for some fun and to see how it would work for me.
RadioHamGuy
Jogging while listening to the Space Station
This is my reception of Astronaut Jeff Williams talking with summer camp students at the Kopernik Observatory and Science Center.
Space Comms
Lightning strikes on the Maestro/Flex 6300
Perhaps it’s time to disconnect the antennas and call it a day.
The Radio Hobbyist
Late Summer Hike on Shute Hill
I hiked on Shute Hill this afternoon. It’s definitely late summer. The sounds of crickets say so. The loud buzzing of bees on the goldenrod tell me fall is around the corner. I made a wonderful 2-way QRP QSO with Georgia.
The trail goes south and east from the old cemetery off the Rufus Colby Road. It goes all the way over the hill to the range road on the other side.
I walk for about 20 minutes. There are asters and goldenrod everywhere.
I set up along the trail under a beautiful oak tree. I’m using the MTR by Steve Weber, KD1JV. It’s a tiny 3-band rig powered by 8 AA cells. It gives me about 3 watts. I have hung a 20 meter dipole as a vertical from a branch and I sit on the ground with the MTR in my lap.
I hear K4JPN Steve in Georgia finishing up a QSO and I call him. He answers right away and gives me a 579. He is 599. He is running a K2 to a 3 element beam. He drops his power down to 2 watts. I still have solid copy and we chat for about 15 minutes. I’ve worked Steve about a half dozen times before. He spent lots of time in New Hampshire as a youngster and he’s as glad as I am for the contact.
Here’s my view from my operating position. At the bottom right of the photo, you will see a water bottle. It is hanging from the end of the dipole keeping the antenna taut.
It’s not a fancy place with a spectacular view. But it’s beautiful nonetheless. I pack up and hike back to the cemetery where I left my car.
How I Became a DXer
I took my Class B amateur radio exam on November 25th, 1949 which was the day after Thanksgiving. In early 1950 my W2DEC license arrived in the mail, I was the happiest kid in the state of New Jersey. My pathway into operational ham radio was a home built transmitter and a purchased receiver. A generation of Novices would soon pursue this same route.
I worked the entire summer prior to getting my license saving enough money to purchase a Hallicrafter S-40A. My first transmitter was based on a QST article and contained a crystal controlled 6AQ5 driving a 6L6 amplifier I had no idea how much power I was running, who could afford a meter? My first antenna was a folded dipole constructed using 300-ohm twin lead commonly used to feed TV antennas. The antenna ran around the ceiling of a first-floor apartment. The performance of this antenna could charitably be described as abysmal.
With this rig my QSO rate was about one every third day. I did learn an important lesson, if you have a weak signal don’t waste your time calling CQ because only those skilled in clairvoyance would be attracted to answer a signal that was 90% imagination. However I could, on occasion, get someone calling CQ to respond to my reply.
My home was Hillside, NJ which is between Newark and Elizabeth. All my contacts were with the first, second and third call areas plus a couple of VEs. My best DX was a QSO with a very patient operator in Northern Maine.
After about five months using this rig, I talked two neighbors into allowing me to string my folded dipole between their clothesline poles and things started to improve dramatically. Suddenly, station in the fourth, eighth and ninth call areas were within my grasp. My best DX was Miami FL, I was on my way with flying colors.
My Elmer, Jim McGintey W2YYP, helped me set up a BC459 (WWII general use transmitter) with a power supply scrounged from parts from a discarded TV set. The difference when using when using a VFO controlled transmitter was dramatic. The transition from an indoor antenna to an outdoor antenna and from a crystal controlled to a VFO rig had taken my QSO rate from one every second or third day to frequently five, or more, Qs per day.
One evening I heard KG4AN calling CQ NYC. KG4, at the time, was exclusive Guantanamo Bay Cuba. Since I was close to NYC I called him and back he came. I was so nervous I could barely send coherent code. KG4AN was a Marine stationed on Gitmo and his wife had just given birth to a baby girl. He asked me to call his parents on Long Island to pass along the good news , I happily complied. I was now on my way to becoming a DXer with three countries, W, VE and KG4, worked and soon to be confirmed. The KG4AN QSL hung on my wall for many years; unfortunately, the card became a victim of hurricane Sandy.
Almost all of my operating was in the afternoon after school or the early evenings. I heard a few Europeans but didn’t have enough confidence to even call them. I had yet to work anyone west of the Mississippi.
One night I woke up about 2 AM with a toothache and couldn’t get back to sleep. I wondered if anyone was on the air at that hour and got up and turned on the rig. I didn’t touch a single dial and there was a W7 calling CQ. I called him and much to my surprise he came back. In those days you were located in the call area where you call indicated unless you were signing /some other call area. Sure enough, he was in Arizona. I was so excited I sent him an air mail QSL card. In 1950 postage to send a QSL card was a penny and an air mail QSL cost 4 cents. I sprang for mailing my card in an envelope which set me back 6 cents. The card from W7RA hung in a place of honor on my wall for years to come. I sometimes wonder if Mark Zuckerberg’svFacebook idea of putting important things on a wall didn’t originate with radio hams.
Taking one more look at the band before heading back to bed I hear another W7 calling CQ. Can I be lucky twice in the same session? Yes sir and Washington State was added to my growing list of states worked. That glorious night taught me two important lessons; learn about propagation and if you want different states and try operating at times you usually not on the air.
The next night the toothache was gone but I was again up a 2 AM. I worked a W6 and a couple of W0s stations. A few nights later I was tuning the band and there was a KH6 working another W2. I waited until they were done and called the KH6. Another miracle, he came back. A few nights later a ZL was added to my log and the DX hook had been firmly set. The rest, as they say, is history.
Although I worked my way up to being one country off the top of the honor roll in 1965, none of the contacts putting me at that lofty level equaled the thrill of working the first KG4, W7 and KH6. If it hadn’t been for a toothache who knows how my ham radio career would have unfolded, I may have never become a DXer.





















