Archive for the ‘Uncategorized’ Category

Amateur Radio Weekly – Issue 105

Yaesu FT-891 – New HF/50MHz transceiver
Although the details are extremely limited, it seems we are talking about a HF/50MHz mobile radio similar with the FT-857 in size.
QRP Blog

The future of MacHamRadio.com
Popular website may close due to conflict of interest with employer.
MacHamRadio.com

ARRL tells FCC to restore balance of modes on 80 and 75 Meters
Refarming 3600 to 3650 kHz for data modes could prove to be a disincentive to General licensees to upgrade.
ARRL

Digital voice adapters for Raspberry Pi and Arduino
This is an ongoing project to develop very inexpensive hardware and software to help amateur radio folks with D-Star.
KI6ZUM

RF exposure – Evaluating your station
How do you practically conduct an RF exposure evaluation of your station?
Ham Radio School

TLF: A Linux based Ham Radio contest logger
TLF is a curses based console mode general logging and contest program for Amateur Radio.
TLF

APEX, New APRS Protocol, New Paradigm, New Software
APEX stands for “APrs EXtended”; It will be a new protocol which expands on and fixes most of the issues in the older APRS protocol while still remaining backwards compatible.
jeffreyfreeman.me

Nanocounter: Frequency Counter with an Android UI
The Nanocounter is an accurate, open source frequency counter that uses an Android phone as its display.
Hack A Day

Why you should get your Extra Class license
The Amateur Extra Class license is the highest class of license in the United States, and perhaps the world. Many hams—even hams that live outside the U.S.—aspire to pass the test and be awarded one.
Everything Ham Radio

JSatTrak: Cross-platform satellite tracking app
JSatTrak is a Satellite tracking program written in Java. It allows you to predict the position of any satellite in real time or in the past or future.
JSatTrak

New product

SharkRF: Standalone digital radio IP gateway
Connect openSPOT easily to DMR, D-Star reflectors, C4FM/System Fusion rooms, and use your radio with excellent voice quality without sync errors.
SharkRF

Video

Power outage… Zero HF noise
During a power failure I thought I would see how quiet HF can be.
Michael Carey

Power is back… And so is HF noise
The obsession with everyone (me included) to surround themselves with crappy, poorly designed electronics creates a nightmare for urban HF radio operators.
Michael Carey

and finally…

Don’t do this
Power line short circuit.
YouTube

The Spectrum Monitor — April, 2016

tsm-april-2016Stories you’ll find in our April, 2016 issue:

Let Portable Antennas give you a Noise-Free Vacation
By Keith Baker KB1SF/VA3KSF

An increasing cacophony of mostly man-made RF noise on our HF bands makes it ever more difficult to hear particularly weak incoming stations, sometimes to the point of making reception of favorite shortwave or ham DX stations all but impossible at home. Keith shows us how you can take a break from noise using portable antennas that really work.

What You Should Know before Investing in an Antenna
By Richard Fisher KI6SN

Whether you are a relative newcomer to amateur radio, SWLing, TV DXing or VHF-UHF scanning, or are a seasoned card-carrying veteran, only you will know the antenna parameters best suited for your amateur station or listening post. Your own passions, needs, capabilities, real estate, budget and a jillion other factors inform your antenna choices. Richard helps sort out the options and explains how to get the most S-units per dollar spent in pursuit of DX.

Wi-Fi Radio Primer Part 1
By Thomas Witherspoon K4SWL

Always a hard-core shortwave radio listener, Thomas likes the tactile experience of turning the knobs of the shortwave, tuning in stations across the globe. So, when online listening became popular, it never occurred to him to give it a try. Then, at the 2012 Winter SWL Fest, an excellent presentation on the merits and technologies behind Wi-Fi radio intrigued him. After downloading and installing the Pro version of the TuneIn radio app, he had to admit, it was a pretty powerful listening experience…one he could easily get used to.

Piggy-Bank Ham Radio Part 1
By Cory GB Sickles WA3UVV

After hearing someone bemoan the “high cost” of amateur radio and how such a “prohibitive expense” was preventing many from becoming hams, his knee jerk reaction was, “Really?” Sure, if you’re referring to a super-mega-über contest station, then he might agree, but just to get started, you don’t need deep pockets—just some preparation and some well-placed effort. Cory outlines a “cheap and dirty” way to start enjoying HF—with the basic Technician class license. Just as ham radio itself has no barriers as to age, the ideas he shares can work for anyone, whether you’re a student, retiree or somewhere in between.

Multiple FTA Satellite Reception Techniques Revisited
By Mike Kohl

The most cost effective way to get into Free-to-Air satellite reception is with 75 to 90-cm antennas for most Ku-band reception because they’re cheaper and shipping costs are less. But needing to monitor multiple FTA satellites forces a decision about whether to use multiple Ku-band antennas linked together with a DiSEqC switch, or to motorize one or more antennas. Which Ku-band satellites do we actually watch on a regular basis? After the busy Galaxy 19 satellite at 97 degrees West, what satellites do we need continuous access from on a 24 hour basis? Mike shows us how to properly set up a motorized Ku-band dish or use a DiSEqC switch.

Scanning America
By Dan Veenaman
Growing Acceptance of TETRA

Federal Wavelengths
By Chris Parris
The 2016 Political Season

Utility Planet
By Hugh Stegman NV6H
Uncovering U-2s on HF

Digital HF: Intercept and Analyze
By Mike Chace-Ortiz AB1TZ/G6DHU
US ALE Smorgasbord

HF Utility Logs
By Mike Chace-Ortiz and Hugh Stegman

Digitally Speaking
By Cory Sickles WA3UVV
Digital Destinations

VHF and Above
By Joe Lynch N6CL
The Meteor Shower Nobody Saw—Revisited—Again

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Home-Brewing and Kit Building Isn’t What It Used To Be—But It’s Almost What It Will Be!

Radio 101
By Ken Reitz KS4ZR
Last of the Standalone DRM Portable Radios?

Radio Propagation
By Tomas Hood NW7US
Season of Lights (Aurora)

The World of Shortwave Listening
By Rob Wagner VK3BVW
Clandestine Stations Alive and Well

The Shortwave Listener
By Fred Waterer
The Queen’s Birthday, KBC Cutback and VOA Tibet

Maritime Monitoring
By Ron Walsh VE3GO
Radio Action on the Great Lakes Returns

The Longwave Zone
By Kevin O’Hern Carey WB2QMY
Spring Remedies

Adventures in Radio Restoration
By Rich Post KB8TAD
Sound and Light: The Mitchell Lumitone 1260

Antenna Connections
By Dan Farber AC0LW
Multi-banding a Single Antenna: Several Routes Beckon

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.

A Tale of Two Mics

Number 8I’m fairly new to this amateur radio community and I’ve already learned a lot. What excites me about it, beyond making contacts, is the making of parts and equipment. Homemade or homebrew items are sprinkled liberally around the community. I appreciate what I have learned and I’m excited to learn more.

So, here’s my problem:

I went through a couple of radios, mainly mobile radios, until I found suitable base radio for starters. After my young son decided to play with my adjustable power supply, he fried my Yaesu 8900, beyond repair. I took it to a local operator, who, after careful investigation and minor repair, declared the radio dead. He offered his condolences and offered that he might be selling a radio, not that he was trying to force me to buy it. I inquired about this radio. It was a Kenwood TS-2000. Looks nice and has a lot of buttons. He told me he was going to take it to the local ham fest to sell and if it didn’t he’d make it a good deal for me.

As fate would have it, the radio didn’t sell. Indeed, he sold it to me for an undisclosed amount that was more than a good deal for me. He added an HP DPS-1200FB server power supply to avoid the incident to which my Yaesu had succumbed. I was happy and overwhelmed. This radio was more than I ever imagined, and I’m still learning about it after almost a year.

Eventually, I discovered that VOX is very useful for HF work. So, I added a cheap computer studio mic and went to work on HF. Then, there are the local nets on the local repeaters. While not forbidden to use VOX on the repeater, setting things was just a bit tricky. So, I opted to use the supplied Kenwood dynamic push-to-talk mic for repeater work.

Now, the two mics are in play. Any time I switched between the repeaters and HF, I also switched mics. I had to disconnect one and attach the other, which, besides being cumbersome, just made me worried I’d eventually mess up the connectors.

Behold! The idea for a microphone selector switch was born.

Read the rest of this entry »

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


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  • Matt W1MST, Managing Editor