Archive for the ‘Uncategorized’ Category

Amateur Radio Weekly – Issue 132

HDSDR beta 2.75 released
HDSDR hasn’t been updated since 2013, so it is good to see that the author is back in action.
RTL-SDR.com

Put that Amateur Radio license to use on 915 MHz
Faraday makes it very easy to transmit and receive digital data, with decent power and range.
Hack A Day

Learning Morse Code in 4 hours
Researchers at the Georgia Institute of Technology have developed a system that teaches people Morse code within four hours using a series of vibrations felt near the ear.
Georgia Tech

National Geographic: Guide to Ham Radio
Can Ham radios really talk to space? And other answers.
National Geographic

Suspected terrorists believe HAARP controls minds
Two men collected dozens of weapons as part of a plan to attack the High Frequency Active Aural Research Facility or HAARP.
WALB

SainSonic APRS Tracker
1 watt APRS tracker with GPS, Bluetooth built-in.
SainSonic

KB6NU’s One-day Tech class videos
KB6NU has been sharing a series of videos from his One-day Tech class.
KB6NU

ISS APRS packet system switched to UHF
Crew member Shane Kimbrough, KE5HOD, has activated an ARISS UHF radio that had been in storage on the ISS, and it is now operational on 437.550 MHz.
ARRL

An improved knob for the K2
Compared to tuning knobs on most commercial rigs, the one on the K2 has a rather sharp edge, the effects of which can become obvious if you tune a lot by resting one finger against it.
AA7EE

Do you have a prepared Ham Radio elevator pitch?
Don’t try to be all things to all people, stick with the aspects of ham radio you enjoy and have passion and expertise.
Ham Cram

All-Seeing Eye: Russia builds gigantic military radar in Arctic
The so-called “over the horizon” radar is a type of radar system, which is able to detect targets at very long ranges, typically hundreds and thousands of kilometers.
Sputnik News

Video

Building an APRS Digipeater
The transceiver is a GM300, with a KAM plus TNC modulating it. If we didn’t happen to have a KAM+ on hand, I would have probably used an OT3m from Argent Data.
The Life of Kenneth

TYT MD-398 GPS Unboxing
This model is the GPS version. It also comes in a version without GPS. This is a pre-release model, however, it is identical to the Radioddity GD-55 model.
Ham Radio Review

W9BVX’s helium balloon vertical antenna
Watch now as he ticks another item off his ‘bucket list’.
KB8VBR

Radio Review: QYT KT8900 Mini Dual Band Mobile
Programming repeaters into the QYT KT8900 Mini Dual Band Mobile
AF5DN

The Spectrum Monitor — November, 2016

tsm-112016Stories you’ll find in our November, 2016 issue:

TSM Reviews: Elecraft KX2 QRP Transceiver
By Thomas Witherspoon K4SWL

As a ham who already owns both the KX1 and KX3 transceivers, and likes them very well, wouldn’t a KX2 be redundant? Maybe. But it also puts him in a perfect position to compare Elecraft’s latest offering. Thomas takes the diminutive KX2 into the field, where it was meant to be, activating more than twenty NPOTAs (National Park on the Air). What he finds is that “the KX2 is a profound upgrade of the KX1.” He also checks out the KX2 on the international shortwave bands and finds, “It’s an exceptionally sensitive and selective receiver, with a stable AGC, that would please the most dedicated DXer.”

Small HF Antennas for Portable and Restricted Space Use
By Mark Haverstock K8MSH

While small and shortened antennas have their drawbacks, their advantages—convenience for portable use, backpacking and avoiding HOA conflicts—are substantial tradeoffs. And, while their performance is less than should be expected from full-sized antennas, this doesn’t mean they don’t perform—you just need to keep your expectations in perspective. Mark takes a look at several of the more popular portable HF antennas available commercially and he looks at the options for making your own, including a 40-6 meter end-fed antenna he made himself.

Radio Power Supplies: A Primer for Hams and SWLs
By Bob Grove W8JHD

It’s the most basic piece of equipment in your ham shack or radio room—it’s certainly the least interesting—but it could be the most important. Bob Grove answers just about every question you might have had about the lowly radio power supply: Why 13.8 volts? Is a same-brand power supply best for my name-brand transceiver? Do I really need meters on my power supply? What’s a switching power supply? What’s “crowbar protection” and “variable voltage?” What amperage do I really need? If I’m using a battery as a portable power supply, which is best?

The Kit’s Meow: Shopping for DIY Radio Projects
By Richard Fisher KI6SN

With Ramsey shutting down its radio kits division earlier this year, many hams and shortwave listeners felt it might signal the end of the radio kits industry. Don’t people build things anymore? Regular TSM contributor Richard Fisher KI6SN set out to discover the current state of kit making. What he found is quite encouraging: more than 250 online companies offering kits as varied as the spectrum we listen to, with a great range in prices and required maker skills. Richard lists them all, complete with a sampling of their wares and links to their websites.

MURS: Dots, Data and More
By Cory GB Sickles WA3UVV

Along with Class D CB, GMRS (General Mobile Radio Service) and FRS, (Family Radio Service) there’s another aspect to the FCC’s Part 95 two-way radio – MURS. The Multi-Use Radio Service occupies five channels in the VHF spectrum. By rule, it is limited to a 2 watts output power and may seem quite limited, but there’s more to MURS than meets the eye. In this segment of his Part-95 radio series, Cory, looks at the little known VHF service that can meet quite a few needed applications where you live.

Scanning America
By Dan Veenaman
Public Utilities as “Critical Infrastructure”

Federal Wavelengths
By Chris Parris
TSA Radio Updates and More Small Federal Agencies

Utility Planet
By Hugh Stegman NV6H
KPH Returns to Point Reyes

Digital HF: Intercept and Analyze
By Mike Chace-Ortiz AB1TZ/G6DHU
An HF “Beep, Beep, Beep,” Chirping Signal Mystery

HF Utility Logs
By Mike Chace-Ortiz and Hugh Stegman

Digitally Speaking
By Cory Sickles WA3UVV
DMR Update

VHF and Above
By Joe Lynch N6CL
Baofeng BF-F8HP and BTech UV-5X3 Handhelds and 220 MHZ

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Forget the Holiday—It’s Contest Time!

Radio 101
By Ken Reitz KS4ZR
What’s New in CB and FRS/GMRS

Radio Propagation
By Tomas Hood NW7US
Space Weather: Solar Cycle 24 is Dying!

The World of Shortwave Listening
By Ken Reitz KS4ZR
Trends in Shortwave Radio

The Shortwave Listener
By Fred Waterer
EU SW Stations and Election Night Listening

Amateur Radio Astronomy
By Stan Nelson KB5VL
FITS Again

The Longwave Zone
By Kevin O’Hern Carey WB2QMY

Adventures in Radio Restoration
By Rich Post KB8TAD
The Freshman Masterpiece: a 1920s TRF Experience

Antenna Connections
By Dan Farber AC0LW
And the Twain Shall Meet: Let’s Build a Dipole

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 131

BITX40 40 meter transceiver
The BITX40 is a single circuit 40 meter SSB transceiver capable of 7 watts.
HF Signals

Ham proposes vanity call sign rule changes
W4ADL is proposing that any licensee obtaining a vanity call sign be required to keep it for the full license term.
ARRL

Open Repeater Project
The OpenRepeater Project is the development of a low cost, low power, but a feature rich duplex Linux based amateur radio repeater controller using computers like the Raspberry Pi 2.
Open Repeater Project

24 GHz handheld
Vegetation completely blocks 24 GHz signals. A tree or even the smallest bush blocks the signal.
EA4EOZ

Designing an idiot switch
Building a micro controller device that removes power from a soldering iron when the user leaves it turned on for too long.
Ham Radio 360: Workbench

APRSpro
iOS APRS client with built-in iGate.
APRSpro

Taking your QRP signal to the next steps
The heavy lifting is done not by you but by the DX who is trying to dig you out of the mud.
AmateurRadio.com

Graphing realtime WSPR propagation
This gives useful information about when a certain part of the world can be heard and worked.
PE4BAS

Why you should care about software defined radio
It hasn’t become a household term yet, but Software-Defined Radio (SDR) is a major player on the developing technology front.
Hack A Day

Amateur Radio and FreeBSD [PDF]
Many of the applications written generically or specifically for Linux are easily transferred to FreeBSD.
FreeBSD Journal

Video

K7AGE Visits the new TWIT Studio
On my way to the Pacificon Hamfest, I stopped by the new TWIT studio and I was on Ham Nation.
K7AGE

Drone footage of 2017 Hamvention site
Quad-Copter touring the Greene County (Ohio) Fairgrounds
W8WWV

Drone footage of antenna install
The team at RemoteHamRadio.com installed two rotating towers in Maine.
YouTube

Amateur Radio Weekly – Issue 130

A geosynchronous Ham Radio satellite
The satellite’s potential footprint could extend over the US from the Mid-Pacific to Africa.
AMSAT-UK

Is wind energy a good fit for you?
For the off grid Ham who wants to expand beyond solar, is wind energy the next likely step?
Off Grid Ham

Calling CQ: An email letter for amateur radio enthusiasts
The best editorial content promoting the hobby.
KE9V

Terminated inverted U antenna
I built the antenna using two 10m fishing poles spaced 5m apart.
Cross Country Wireless

Polite society on DMR
The wide area TG is kind of like meeting someone in the hallway or a noisy lobby. The “on-demand” TG’s are out the way places to go have a discussion without upsetting the hall monitors.
Digital Mobile Radio for Hams

ISS Columbus Ham Radio inoperative
The Ericsson VHF handheld transceiver in the ISS Columbus module which is used for amateur radio voice contacts on 144.800 MHz and the packet radio digipeater on 145.825 MHz is unusable.
AMSAT-UK

CW Decoder Logic
CW decoder app for Windows.
LY3H

/P fun in the sun
In total, I made 8 QSOs (all CW, at 10-watts) 6 on 40m and 2 on 20m in what were reasonable conditions.
M0PZT

A simple approach to VHF contesting
The tow bar mount is made from a few off cuts of 47mm x 100mm (or 2″ by 4″ if you prefer) and a piece of rough sawn timber.
G7KSE

Hams in India monitoring “Highly Suspicious” VHF communications
The signals were being heard in the dead of night, with participants reported to be in motion and speaking in some sort of code.
ARRL

Video

1 foot mini magnetic loop transmitting antenna
I decided to make a mini magnetic loop and see if I could be heard down on HF with a tiny antenna.
YouTube

SOTA Signals from Signal Butte
Steve/K7PX and Steve/wGOAT activate Signal Butte for Summits on the Air.
WG0AT

Amateur Radio Weekly – Issue 129

Current rules holding Hams back from state-of-the-art technology
ARRL told the FCC in its comments that the current HF symbol rate “speed limit” reflects 1980s technology and has no place in an experimental radio service.
ARRL

Outernet broadcasting APRS packets globally
Outernet is a low data rate worldwide satellite downlink carried on three geostationary Inmarsat L-band sateliltes to provide web content (downlink files only) to remote areas anywhere in the world.
aprs.org

Building a Ham Radio power supply
After spending $820 for the radio, I wasn’t in the mood (or the financial state) to drop another $100 to $150 on an Alinco Power Supply.
Soliloquy Blog

Building your own GSM basestation
Having your own GSM basestation allows you to create your own private and free GSM network, or for more malicious illegal users it can allow you to create a system for intercepting peoples calls and data.
RTL-SDR.com

Open source, cross-band repeater board for high altitude ballooning
Project Echoloon is an Amateur Radio cross-band repeater device that can be lifted by a few helium or hydrogen-filled party balloons.
N0SSC

Top 10 Amateur Radio uses for the Raspberry Pi
The Raspberry Pi has proved to be a phenomenal hit with hobbyists around the world.
Adventures in Ham Radio

How the phonetic alphabet emerged
For a time the Able, Baker alphabet, derived from WWII when the US air force entered the war, hung around in aviation for years.
Southgate

Rehab for the KØNR Repeater
The SCOM 7K repeater controller has been in service for decades, handling multiple receivers and transmitters.
K0NR

What is Near Vertical Incident Skywave?
This series focuses on short-haul communication during a disaster in the Amateur Radio Service.
N4AE

Video

MMDVM home brew repeater demonstration
Here is a quick video clip showing the flexibility and ease of use when switching between the 3 digital modes DMR/DSTAR/FUSION.
N2LEM

Sean McQuillan: Engineer, farmer, pirate radio pioneer
Sean McQuillan single-handedly set up one of the first land-based pirate radio stations in the country. Sean recounts tales of many events in his life with humour, eloquence and humility.
Vimeo

Bike Ride to the Potter Place RR Station

I made a quick bike trip from Andover to the old Potter Place railroad station this afternoon. The fall colors were beautiful and I worked Texas and Germany.

caboose

I rode along the old Northern Rail route. It’s a rails to trails bike path now. I heaved my wire over an oak tree across from the station and sat down in the grass with the KX3. I was using a 30 foot wire as a vertical with an EARCHI 9:1 unun. I started out on 17 meters and heard N5WNG calling CQ from Dallas. He was really strong… we must have had an excellent path because Mike gave me a 599 and judging by his signal, I think it was a real report.

rig

I didn’t hear any other stations on 17 meters, so I switched to 20. Ralf, DK7AH in Munich was just finishing up a QSO and I called him. He was also very strong. He gave me a 579. He was running 500 watts with a 5 element yagi. “UR LOUD ES CLEAR,” he sent. We chatted for a few minutes and then I packed up for the return trip.

stn

These beautiful fall days only last a short time. I’m trying to get out whenever I can.

The Case for Mars

case-for-marsInterest in Space has changed radically since Apollo ended in 1973 and the Shuttle Fleet has been retired. Advances in Science through NASA have continued since then, but mostly from Low Earth Orbit, leaving only interplanetary probes and landers to perform the state-of-the-art observations at the great distances to the planets.

Space communications are enjoyed by all Radio Operators’ with the rewards of exacting views of Mars, all the way to Pluto and well beyond.

Human space travel beyond the Van Allen Belt stopped in 1973. Excursions to Lunar Soil…no more. Since its conception, NASA has drafted scores and volumes of plans for every conceivable mission possible from this planet. But only one plan stands out as most feasible in view of the pioneering spirit of offworld adventure… Going to MARS!

Dr. Robert Zubrin, of Pioneer Astronautics, Lakewood Colorado has a vision that extends to colonizing the planet Mars. His radical approach surpasses NASA’s studies in “micro-gravity” since 1973 and in his words “..the purpose of spaceships is to actually travel across space and go to new worlds, not to hang out in space and observe the effects of doing so….” (circa 2003, US Senate Committee of Space Exploration) His Book, “Case for Mars” lays out the most suitable approach of a Mars Direct (or, Semi-Direct) Plan of going there.

The Mars Society has established a number of MARS simulation stations on Earth called “Analog Stations.” Two of these, MDRS & FMARS are affordable platforms offering a “near-to experience” for future Martian dwellers,
in the traditions Dr. Robert Zubrin’s Mars Direct Program.

Since the first “Crew 1” of 2001, the Crews have displayed techniques for:

  • Growing sustainable crops to survive
  • Health & Medical care
  • Habitability & Water Reclamation
  • Geodesics and Photogrammetry
  • UAVs & Rovers

…all this, with devices brought with them for the duration of their stay.

What they lack is a realistic communications system to simulate the kinds of remote communications they would actually use on the planet. This article is a call to Hams to solicit help for the Mars Society in establishing some meaningful amateur radio between and around the camps. This help can either be radio work-groups or donations towards current state-of-the-art equipment & devices.

Amateur Radio Has a lot to offer the Mars Society activities. If they adopt ham radio, then the licensing requirements would be mandatory for Crew Members and Mission Control.

HF Frequencies could be used for making reports to Mission Control in Colorado, New Mexico or, in relaying reports between the other Analogues Stations.

Getting their licenses reminds these operators the importance of their radio studies. It is a medium to use at all times, no matter which world they are on.

The objective is to have BOTH Analogs & Mission Control “permanently equipped” with Communications, PCs, Sensors & hardware.

  1. Mission Control Radio Communication
    ( HF Med / High Power )
    For “checking in” and reporting status of accomodations.
  2. Point-to-Point Communication
    ( VHF – Low Power )
    Mars has no ionosphere, therefore line-of-sight radio is handled by GMRS or 2 Meter Simplex Modes. Further Distance coverage is handled by a Remote, solar-powered, Repeater Station(s).
  3. Telemetry
    ( VHF / UHF – Low Power using APRS ) for Weather, Seismic Sensor, Tracking, EVA Suit & Health, power charge monitoring.
  4. Position Reporting
    ( VHF / UHF – Low Power using APRS)
    RDF, APRS and EPLRS Methods can be used because by the time man and women arrive on MARS, there will be a network of GPS-MARS satellites to support exploration. In addition Radio Direction Finding can be useful for Search & Rescue.
  5. Ground Penetrating Radar GPR
    ( UHF – 1 to 4 watts for depth data – VHF for data transfer )
    Device mounted on Rover for high definition Tomography.
  6. Satellite Communications
    OSCAR SATS [any or all available] ( VHF – 20 to 35 Watts )
    Remote Satellite Dish Controller and Program for Orbital Predictions. Exercising the practice of tracking and piloting a Supply Ship to and from the surface.
  7. Power Management Monitoring
    ( VHF / UHF – Low Power )
    Solar / Thermal / RTG Power Plants and Storage Arrays.
  8. Enhanced UAV
    ( VHF / UHF – Low Power)
    Ground Penetrating Radar.
    Geodesics – LIDAR and Photogrammetry.
    Seismic Sensor positioning.
  9. Packet Digipeating
    ( VHF simulating MARS networks)
    Wireless internet – Multi-node – Global coverage.
    Telemetry,Telemetry, Telemetry….it’s about telemetry. The variety of existing APRS formats can be used to provide the neural life-blood of information that lives are depending on.

The objective is to use communications in a real-world environment to gain experience in day to day operations or emergencies 250 million miles away.

MARS simulated inhabitants would gain experience In the face of failures & power outages, and make immediate and command decisions as needed to conserve power in low power modes – alternate frequencies – troubleshoot – make on-the-fly Repairs.Similarly, MARS Ground Control would learn to activate alternate Tracking and communications Stations as needed to address every conceivable combination of situations no exceptions – as lives are on the line.

Communicating at such a remote and distant location, or in the protective cover of a Habitat or EVA Suit, is as important as the air they breathe.

The Mars Society’s Analog Stations of Hanksville, Utah, and Devon Island, Northern Canadian Reaches have been established over 15 years at locations almost identical to the Martian terrain, but with air. Well over 1,000 Crew Members have dedicated their studies of alternate foods, longevity, geology, mapping, power generation, tomography, astronomy, terraforming, fuel production…. …anything ….everything humanly devised, to be put to the task here and, out there.

Seen from their Crew Reports, there’s been limited use of telemetry, tracking and telecoms to date. University Teams who have introduced various hardware, have returned home with them and not left working systems behind to add to the stations. As such, the stations are relatively incomplete owing to the full spectrum of devices that are needed to make offworld procedures successful.

In the future, with Ham Radio participation and assistance in setting up communications, telemetry and networks, it is possible to see these Habitats fully equipped with more state-of-the art devices permanently on hand at all the Analogs and Mission Control Centers with real-time techniques and real-world equipment.

These Analogs and Simulatinos are not just practicing life on Mars for the sake of isolation. They are trying to replicate the full spectrum of conditions that would be involved in communicating with the distant world humans, and reporting their findings over these actual radio links. Using WiFi and the internet and our latest technology is not an accurate simulation. With Amateur Radio communications and links we would be practicing to be becoming proficient in the techniques involved in actually settling there.

This is a good opportunity for ham radio Elmers participate and consider what could be used on Mars and then help in setting it up (as well as get new experimenters, and scientists into the hobby).

Imagine how radio-quiet those first humans will find MARS to be. It will be like listening to the ether like Marconi first heard it on Earth a century ago, but without all the static and noise of lightning and thunderstorms. Maybe there are new noise sources on Mars or propagation possibilities as yet unexplored on Mars. Any ham radio made years ago still applies to the same Spectrum as devices do nowadays.

The radio communications needs are not just those on the surface of Mars but also every component that could very well be used: enroute to – orbiting above – onto, or under the Surface of Mars.

With the help of Hams, these Mars simulated stations on Earth can be much more than simple exercises in human isolation. The real-world experience with simple communications established from the ground up by the participants can be invaluable to learning about the experience of inhabiting a new world…

Think about this opportunity to involve Ham radio in not only the future of planetary exploration but also in involving these active and enthusiastic experimenters into a life long pursuit of the joy of radio communications.

Consider what you or your club can do to participate, or provide equipment donations that can be the instruments of success to this endeavor. The Mars Society is a nonprofit, and welcomes donations pertinent to their mission goals.


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  • Matt W1MST, Managing Editor