Archive for the ‘Uncategorized’ Category

Amateur Radio Weekly – Issue 104

Realtime QSO information from Heard Island
Dashboard shows QSO counts, recently logged callsigns, and QSO search.
DXA3.org

Multimode Digital Voice Modem
A project describing an adapter for D-Star, DMR and other digital modes based on an Arduino Due and a little PCB to put on top.
Notizbl0g.

Radio attack lets hackers steal 24 different car models
Thieves are amplifying near-by key fob signals.
Wired

The Radio Amateur’s Code
Radio sport that involves chasing that elusive country, county, SOTA peak, NPOTA entity or whatever should never become the focus of our lives, or our reason for being.
W2LJ

Why I changed my call sign after 28 years
Up until last month, I’ve used my original Novice-class call sign since it came in the mail in 1988.
N4AE

Ham Radio and Photography
It goes without saying that I always have my emergency preparedness kit with me that is stored in the cargo bay of my mobile, as you never know when you might need to draw from it.
VE6AB

Man in trouble for cellphone jammer on public train
A 63 year old financial analyst is facing serious charges, because he used a cellphone jammer on a public train.
Southgate

The technology working behind the scenes of Heard Island
Here is a pictorial list of the technology we are using to support VK0EK. Every thing we use is in the “Cloud” – and everything is automatically maintained and backed up.
VK0EK

Rash believed to be caused by radiation from mobile phone mast
Resident said she suffers from electrosensitivity- a condition suffered by people who in varying degrees are made ill by connection to electricity.
Ledbury Reporter

North Korea intensifies shortwave jamming
North Korea has been from the beginning of March continually signal jamming radio broadcasts on the shortwave frequency used by the South Korean non-profit broadcaster Unification Media Group.
The SWLing Post

Video

NOAA WX Sat umbrella antenna
Using an umbrella in place of a quadrifilar helix antenna.
YouTube

Decent Frequency Counter for Under $20?

rk-560

This handy item, purchased recently on eBay, can be useful for those needing an inexpensive frequency counter and tone code analyzer.

It comes complete with battery, three inch telescoping antenna — but no instructions. Size is 4 x 2 3/8 x 1 inch and comes in camo color.

To turn on just press the button on left side to reset the unit, then hit the transmit key of the test radio, and in a second it reads the frequency and tone. It shuts off automatically after about 10 seconds. The back cover has a convenient hole for hanging the unit.

As per the manufacturer it covers 50 MHz – 2.4 GHz and I have tried it on 2m, 70 cm bands, and on the FRS band. It seems to work fine. Can’t say how long this unit will last but if someone wants a much better and much more expensive unit, Optoelectronics makes one for nearly $500: http://www.optoelectronics.com/#!cd100/c6qo

Making Pile-ups a Little More Fair

bruce-tisdale-k9icp

For years I have been an avid chaser of DX and special event stations. I am accustomed to patiently working pile-ups. I have also been an operator of a special event station and have had to pick out callers trying to get through. I know how hard it is to be on both sides of the pile.

I appreciate when the special event operator is overwhelmed with callers and decides to use split frequency operations or operations by the prefix number. This help to reduce the chaos and allows a lot more stations to be heard. However, it is frustrating when the special event operator switches to prefix numbers after I have been working the pile-up awhile, and almost always begin with numbers starting with “1.” I am in “9” land, which means I have to wait another 30-45 minutes for my chance. If I am lucky, propagation is still good but many times that isn’t the case.

I realize that this is just part of operations. However, it might help if the special event operator limited the number of stations or minutes operating each prefix number so that everyone gets a chance without losing propagation.

Another idea would be for the operator to consider starting numbers beginning with “0” or “9” areas once in awhile. The point is to give everyone a reasonable and timely chance to work the pile-up.

Amateur Radio Weekly – Issue 103

Tytera MD-9600 DMR Digital Mobile Radio
Tytera has introduced a new mobile two way radio capable of operation in both digital and analog modes.
Cricket Ventures

In depth: Icom IC-7300 review
Icom IC-7300 is the first direct sampling SDR (software defined radio) available from one of the “big three” Japanese manufacturers.
YO9IRF

FreeDV 2400A
Two new FreeDV modes for VHF/UHF.
Rowetel

SM2000 update (turning your $35 HT into a digital radio)
KA8BMA has been working steadily on the CAD work for the SM2000 VHF Radio.
Rowetel

The Amateur Radio Operators Preparing for the Worst
In natural or man-made disasters, ham-radio enthusiasts put their hobby to work.
The Atlantic

The first transatlantic communication cables
The TAT-1 system would have two cables, one for east-west traffic, the other for west-east calls. The core of each cable was a single coaxial cable with a solid copper center conductor
Hack A Day

Over the horizon radars becoming routine on Amateur HF bands
A 50 kHz wide Russian OTH radar has been heard in the evening on 80 meters, often in the CW part of the band.
ARRL

Raspberry Pi QRP TX Shield for WSPR
The QRPi board is an inexpensive way of turning a Raspberry Pi single-board computer into a QRP transmitter.
Tucson Amateur Packet Radio Corp

IC-7300 — A Game Changer
While traditional receiver designs utilize Local Oscillators, LO, these Analog to Digital converter, ADC, devices have become the heart of the IC-7300 receiver design.
Icom

Listen for ISS with Raspberry Pi 3 and SoDeRa
Receive amateur radio transmissions from the International Space Station.
AMSAT UK

Carrington Probabilities
His estimate of the probability of another Carrington event is surprisingly high.
VE7SL

Our hobby in 30 years?
An aging population will not buy so many rigs, will not support magazines. Numbers will fall. Activity will fall.
amateurradio.com

ARRL on Instagram
The official Instagram account for ARRL, the National Association for Amateur Radio in the US.
Instagram

Stuart Sizer: Heathkit designer
Stu Sizer––”stylist, artist, maker of models, bon vivant”––was tasked with crafting Heathkit’s user-friendly and attractive exterior designs.
The SWLing Post

Will the Kids of Today Ever Experience That?

k8kemAs a young man, I was a CW Radio Operator aboard a U.S. Coast Guard Cutter (CastleRock/NBZF), I was thrilled everyday to go on watch. It led to me getting a ham ticket in 1955 and thereafter, enjoying the hobby. I always stayed a “CW” operator and never enjoyed the 2-meter FM “thing” as it seemed more like CB to me!

Later in life I got the opportunity to work on Merchant Marine vessels, and after some 30 years, with the exception of Telex, not much had changed.. CW was still alive and well, though many of the shore stations began closing down (i.e. WCC, WSL, KPH, etc.).

The writing was in the wall when more and more ships traffic went Telex.. Frankly, because of the length of a majority of these messages, including ship food stores and engine room parts, my keyer would have blown up!

Then not long after, they brought cell phones aboard — the beginning of the end for the ship’s Radio Officers. In 1999, most of the remaining Coast Guard and commercial Maritime stations went silent.

All I can tell you is that while it lasted , it was a great job. But it’s hard to call something a job when you have loved it all your life.

I am very concerned about our hobby these days: no CW requirement. Why would today’s generation want to study for a test when all they have to do is get online and they can communicate all over the world with no QRM, QRN, QSB etc.?

I can see the increase in FM 2-meter and 450 MHz FM for emergency help and that is great, but on the other hand is it actually “hamming” or “quasi police work?”

This is the trouble we older hams have, we live in the past trying to eek out a weak CW signal from some far off country.

With my 100 watts and dipole antenna, I had nightly CW QSO’S with ZL2LI from Christchurch, NZ while I was in Cleveland, Ohio. We could barely hear each other on some nights pushing the “cans” closer to my ears. But it was a thrill each and every time. Will the kids of today ever experience that?

On 7035 kHz., every night we had high speed CW ops from the “CFO” required minimum speeds of 45 WPM and nomination came from at least 2 CFO operators. This club was started by Jim Ricks. W9TO who had invented the famous Hallicrafters “TO” keyer. There are over 1,500 members.

But most of the ops like me are aging.. We need new young blood to keep the organization going.

The fact of the matter is we need new young ops in our most wonderful hobby to learn and use CW So that this art is NEVER lost.

Our hobby in 30 years?

Although I cannot speak for other countries, here in the UK ours is a hobby mainly of older people and mainly men.  When I was fitter, I gave several talks to local radio clubs in East Anglia and without exception, it was mainly OAPs who came along. OK, there were a few youngsters and women, but the vast majority were older men.

Amateurs and SWLs are a dying breed unless we can attract young people into the hobby. I am 67 and will be dead within 30 years, probably a lot sooner. An aging population will not buy so many rigs, will not support magazines etc. Numbers will fall, activity will fall, interest will drain away.

In 20-30 years we will be very much in uncharted territory. What will our hobby be like in years to come?

50 Years Ago, These Were the Ads in 73

73march66They say the days are long, but the decades are short. It’s hard to appreciate how far we’ve come in fifty years — both in terms of technology and prices!

Here are a few of the ads from the March, 1966 issue of 73 Magazine. Enjoy the walk down memory lane!

73march1966-54
Read the rest of this entry »


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  • Matt W1MST, Managing Editor