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Amateur Radio Weekly – Issue 184

This weekend: ARRL 10 meter contest
The objective is for Amateurs worldwide to exchange QSO information with as many stations as possible on the 10 meter band.
ARRL

WSPR Beacon Rocket is launched into near space
I launched a WSPRLite beacon on my hobby rocket at the Dec 2nd rocket launch in Samson, Alabama.
N4KGL

Review: RTL-SDR Blog Multipurpose Dipole Antenna Kit
Four antennas, two mounts, one antenna holder with cable and one more extension cable. Costs $10 on its own.
Radio for Everyone

10 watt moonbounce success
The contact was made using a Yaesu FT-857 @ 10w into a DG7YBN 70-17m 17 element yagi on a frequency of 432.063MHz
Essex Ham

My love for analog FM
C4FM & DMR Repeaters have popped up all over the nation it seems.
K5ACL

Mic amp
I connected my d104 mic to it and hooked it up to the scope and the scope pattern looks good.
awsh.org

Building a WA5VJB cheap Yagi for satellite work
I took a Baofeng UV-5R and built a WA5VJB cheap Yagi which is also used in AMSAT demos at hamfests.
galvanix

EMP protection for the Radio Amateur
What is an EMP, why should you care, and what to do about them?
Off Grid Ham

Reducing SD card writes with Raspbian
A common concern of those running applications on a Raspberry Pi is SD Card exhaustion.
K2DLS

Morse Chrome
Chrome browser extension for Morse Code
Ham Radio QRP

Video

WSJTX & FT8 the easy way with the Icom 7300
For beginners or people who don’t want the work of integrating JTAlert and/or QSORelay and a logbook. The easiest way to make FT8 contacts.
K0PIR

Pakratt PK64 on the Commodore 64 connected to raspberry pi BPQ
Testing connections to my local BBS and another BBS in the area using my commodore 64 and a PK-64 Pakatt TNC connected to a remote raspberry pi bpq over the packet modem.
YouTube

Amateur Radio Weekly – Issue 183

Slow Scan TV from International Space Station Dec 5-6
The MAI-75 SSTV system in the Russian Service Module will be put through some extended testing.
AMSAT UK

What the heck is the ARRL Board thinking?
In effect, this is a gag order on a director if he disagrees with a Board decision.
KB6NU

KX2 firmware upgrade to increase power output
The latest KX2 field-test firmware allows power output to be set as high as 12 watts.
W2LJ

Success with the new AO-91 FM satellite
I did an AO-91 pass at 2 AM Sunday morning with the Kenwood TH-D72A. It was very different. It sounded crystal clear just like a local repeater.
N4KGL

Using a Baofeng transceiver to work Amateur Radio Satellites
I’m a brand new ham as of October 2017, and I had a really fun experience listening to RadFxSat Fox-1B AO-91 yesterday.
friendlyskies.net

Come join the fun with Olivia on HF
Olivia offers keyboard-to-keyboard chatting for when you want to relax, and maybe make a friend.
amateurradio.com

VHF/UHF FM/DSTAR/DMR mobile installation
The setup includes an ICOM ID-4100 running on FM and D-Star on the VHF band, and a Hytera MD-652 running on FM and DMR on the UHF band.
VA2SS`

Icom IC-R7100 and its clicking noise
Every time the squelch opens or closes, it produces a clicking noise.
EA4EOZ

EMCOMM Go Kit – Power Box
All together the power box weighs just under 31.5 lbs.
High on Solder

UK Amateur Radio license stats
Amateur Radio population in the UK has grown by approximately 10% over the past 5 years.
ARRL

Oldest Ham F8IL, SK
Jean Touzot, F8IL, of Albi, France — said to have been the world’s oldest radio amateur — has died.
ARRL

Video

Failed SOTA Activation
Round trip: 10 miles with a 3,900 elevation change.
KB1HQS

Getting Started with Chameleon F-LOOP 2.0 Magloop Antenna
The Chameleon F-LOOP 2.0 is a modular magnetic loop antenna system, which follows the Lego block philosophy often employed by Chameleon Antenna.
OH8STN

Amateur Radio Weekly – Issue 182

Millennials are killing Ham Radio
Maker Movement, digital modes are killing the hobby.
N0SSC

Is the Internet destroying Amateur Radio?
Although there are plenty of “keep the internet out of amateur radio” folks in the hobby, there are many more that have found clever ways to make use of the internet.
K0NR

FT-8: I’m not really feeling the magic
If you’re one of those guys who wants to make contacts, but doesn’t really want to talk to anyone, then this is the mode for you.
KB6NU

Best digital mode…? Not really
I have yet to download the latest WSJT-X release, as I presently have no need, nor see the need to use FT8.
AmateurRadio.com

AO-91 satellite declared open for Amateur use
AO-91 was built as a partnership with Vanderbilt University featuring the Fox-1 style FM U/v repeater with an uplink on 435.250 MHz (67.0 Hz CTCSS) and a downlink on 145.960 MHz.
AMSAT

NASA On the Air for 2018
Club stations at NASA facilities plan to be on the air with special events to celebrate these milestones and we are offering commemorative QSL cards and a special certificate.
NASA On The Air

Bitcoin and weak frequency signals
Two individuals introduced a project which secures consensus proofs with weak signal radio propagation.
Bitcoin.com

Ignored by telecoms, Detroit residents are building their own Internet
40 percent of Detroit residents don’t have any access to internet at all.
Motherboard

Junker: Unfortunate name for a great key
The Junker D.B.G.M. is one of the finest telegraph keys ever manufactured.
Ham Radio QRP

A photographic tour of Universal Radio’s new location
In October, Universal Radio moved from their large Reynoldsburg, Ohio retail store and warehouse to a smaller retail store and warehouse at 651-B Lakeview Plaza, Worthington, Ohio.
The SWLing Post

Video

Amazon Alexa and Amateur Radio
APRS, DMR, learning CW, and more with Amazon Alexa.
Essex Ham

AO-91 RX via Baofeng
YouTube

Tuning 40m in low noise location
I’ve spent a couple of days at a very low noise location. Here’s me tuning 40m in the afternoon.
YouTube

All WX solar powered Amateur Radio field station
The concept for a rapidly deployable, man-portable field station, came to me after the grid down disaster caused by Hurricane Maria.
OH8STN

Come Join the Fun With Olivia on HF (Shortwave Digital Mode Olivia)

For those of you who have dived into the crowded but fun pool of FT8 operation or one of the other Joe Taylor modes (such as JT65 or JT9) and are excited now about digital modes, here’s something you might enjoy, too.  Unlike those modes that allow you to make quick work of getting DX stations into your logbook, simply by exchanging callsigns, a signal report, and a grid square, there are other modes that offer keyboard-to-keyboard conversational QSO opportunities.

One such mode is known as Olivia and this mode offers keyboard-to-keyboard chatting for when you want to relax, and maybe make a friend.  Ham radio is the oldest electronic social networking infrastructure.

In 2005, SP9VRC, Pawel Jalocha, released to the world a mode that he developed starting in 2003 to overcome difficult radio signal propagation conditions on the shortwave (high-frequency, or HF) bands. By difficult, we are talking significant phase distortions and low signal-to-noise ratios (SNR) plus multipath propagation effects. The Olivia-modulated radio signals are decoded even when it is ten to fourteen dB below the noise floor.  That means that Olivia is decoded when the amplitude of the noise is slightly over three times that of the digital signal!

Olivia decodes well under other conditions that are a complex mix of atmospheric noise, signal fading (QSB), interference (QRM), polar flutter caused by a radio signal traversing a polar path. Olivia is even capable when the signal is affected by auroral conditions (including the Sporadic-E Auroral Mode, where signals are refracted off of the highly-energized E-region in which the Aurora is active).

Currently, the only other digital modes that match or exceed Olivia in their sensitivity are some of the modes designed by Joe Taylor as implemented in the WSJT programs, including FT8, JT65A, and JT65-HF–each of which are certainly limited in usage and definitely not able to provide true conversation capabilities.  Olivia is useful for emergency communications, unlike JT65A or the newly popular FT8.

Here is a demonstration of a two-way transmission using the Olivia digital mode on shortwave. I am in QSO (conversation) with KA5TPJ. There are two other Olivia QSOs just below our frequency. Just above us is a lot of FT8 activity. Below the two other Olivia QSOs are PSK31 QSOs. The band is active. Olivia is not dead!

The standard Olivia formats (shown as the number of tones/bandwidth in Hz) are 8/250, 8/500, 16/500, 8/1000, 16/1000, and 32/1000. Some even use 16/2000 for series emergency communication. The most commonly-used formats are 16/500, 8/500, and 8/250.  However, the  32/1000 and 16/1000 are popular in some areas of the world and on certain bands.

This can cause some confusion and problems with so many formats and so many other digital modes. After getting used to the sound and look of Olivia in the waterfall, though, it becomes easier to identify the format when you encounter it.  To aid in your detection of what mode is being used, there is a feature of many digital-mode software implementation suites: the RSID. The video, below, is a demonstration on how to set the Reed-Solomon Identification (RSID) feature in Ham Radio Deluxe’s Digital Master 780 module (HRD DM780).

I encourage ALL operators in any digital mode such as Olivia, set the RSID feature on as shown in this example.  In Fldigi, the RSID is the TXID and RXID (I believe).

Please make sure you are using the RSID (Reed Solomon Identification – RSID or TXID, RXID) option in your software.  RSID transmits a short burst at the start of your transmission which identifies the mode you are using.  When it does that, those amateur radio operators also using RSID while listening will be alerted by their software that you are transmitting in the specific mode (Olivia, hopefully), the settings (like 8/250), and where on the waterfall your transmission is located.  This might be a popup window and/or text on the receive text panel. When the operator clicks on that, the software moves the waterfall cursor right on top of the signal and changes the mode in the software. This will help you make more contacts!

+ NOTE 1:  MixW doesn’t have RSID features. Request it!

+ NOTE 2: A problem exists in the current paid version of HRD’s DM780: the DM780 RSID popup box to click does not work. HRD support is aware of the problem. You can still use the textual version that you can select in the settings so that it appears in the receive text areas. If you click the RSID link that comes across the text area, DM780 will tune to the reported signal, and change to the correct settings.

+ NOTE 3: some websites publish frequencies that are right on top of weak-signal FT8, JT65 and JT9 segments. Even if that is a matter of contention, follow the regulations and be kind: DO NOT QRM weak-signal QSOs! AGAIN: make sure that your signal does not cross into other sub-bands where weak-signal modes are active. For instance, do not have any part of your signal at x.074 or higher, as this is the sub-band for FT8, JT65A, and JT9.

Quick Reference: we in the active Olivia group suggest 8/250 as the starting settings when calling CQ on the USB dial frequency of 14.072 MHz with an offset of 700 Hz, on 20m–that translates to a CENTER frequency of 14.0729 MHz. On 40m, 7.072 MHz on the dial with an offset of 700 Hz (and again 8/250) which translates to a center frequency of 7.0729 MHz.

An example of the calling frequency on 20 meters with a center frequency of 14.0729 MHz, 8 tones, and a bandwidth of 250 Hz.

An example of the calling frequency on 20 meters with a center frequency of 14.0729 MHz, 8 tones, and a bandwidth of 250 Hz.

Also, do not quickly switch to other modes without calling CQ for at least a five-minute window. It is really horrid when people call CQ and change settings, modes, bandwidths, tones, every time they call CQ during the same session!

There are several key resources that we in the Olivia community are developing, to make it easier for you to enter into the great world of Olivia.  One is an active support e-mail group to which you can subscribe at https://groups.io/g/Olivia — a group containing topical areas of interest which can be filtered so that you are not flooded by email containing topics of which you are not interested.  It has a files section, as well, in which we will add helpful how-to instructions and so on.

Another resource is our Facebook group, at https://www.Facebook.com/groups/olivia.hf — also with a files area containing help files.  This group is a great resource for getting help from like-minded Olivia digital mode enthusiasts.

Some more eavesdropping on an Olivia QSO:

And, two more:

One last note: Olivia is NOT a weak-signal mode. There are no points won by barely making a contact. In the USA FCC regulations, you are directed to use only the power necessary to make the QSO.  Typically, with poor propagation, using Olivia with an output power of 100w is the minimum to establish a reliable circuit. You just cannot go beyond your rig’s duty cycle (don’t burn out the finals in your radio!). You also must be sure that you do not overdrive the audio chain into your radio. Be sure that you do not have RF coming back into your audio chain. Yes, 100 watts is acceptable. Don’t let anyone convince you otherwise. After all, think about RTTY.

Welcome to Olivia!  See you on the waterfall.

73 de NW7US

The Spectrum Monitor — November, 2017

Stories you’ll find in our November, 2017 issue:

TSM Reviews: Yaesu FT-891 All-Mode HF+6 100-Watt Transceiver
By Mark Haverstock K8MSH

This month Mark takes a look at the Yaesu FT-891, one of the least expensive 100-watt, all-mode HF+6-meter radios on the market today. Mark finds that, “Its small size and remote head make it perfect for mobile/portable use, and its small footprint fits even on crowded desktops. The larger display is a welcome change, considerably more readable than the tiny ones on the FT-857D and FT-897D.” Mark also notes, “Those who own or have owned Yaesu radios will be used to the menu system, and will appreciate the attempts to provide easier access to some functions.” But that’s not all the 891 has going for it, as you’ll learn when Mark puts his 891on the air.

TSM Reviews: SpyVerter V2
By Bob Grove W8JHD

The earlier version of SpyVerter got a nod of approval from Bob Grove two years ago. But what would he say about this latest version? Spoiler alert! Bob says, “I’ve never changed my mind about the superiority of the Airspy spectrum-displaying receiver to its competitors. Now, with the addition of the previously-missing lower spectrum—virtually down to zero—this is a current leader in computer accessories for radio hobbyists.” In this month’s review he even tells how to use this device to monitor birds, animals and insects in the audio spectrum as well as the sounds of fish in the sea!

TSM’s Annual Scanner Buyer’s Guide
By Larry Van Horn N5FPW

The radio scanner world has been in flux since it began decades ago. And, while the number of manufacturers has shrunk over the years, the capabilities of these electronic marvels have kept pace with the changes. In this survey of all available scanners, Larry writes that, “bare bones, conventional analog-only scanners will run from just under $100. A good analog-only trunk-tracking scanner can be purchased for less than $200 (street price); however, if you need to monitor an APCO P25 Phase I digital trunked radio system, that price quickly jumps to around $400. Add in additional digital modes such as DMR and/or NXDN and APCO P25 Phase II systems and now you are looking at a sticker price north of $500 in most cases.” But, you may not need the latest technology where you live. Find out which scanner is best for your particular location.

Entry Level HF Transceiver Comparison
By Cory GB Sickles WA3UVV

Are you a Technician class amateur radio licensee, looking to explore what is available in HF transceivers in a price range that won’t break the bank? HF operation requires a little more commitment than VHF/UHF FM gear and, while you can easily pick up a high-quality monoband mobile for under $200 or a dual-band portable in the same price range, HF gear is going to run you a bit more. Considering all that you get in the deal though, it’s still reasonably priced. Cory takes a comparative look at what Alinco, Icom, Kenwood, and Yaesu have in the way of 100-watt, entry-level offerings, with a street price of less than $800. With the need for a 20A power supply and simple antenna, a “Kilobuck” budget should certainly get you on the air or perhaps even less.

Scanning America
By Dan Veeneman
Scanning Midwest Utilities’ DMR Services

Federal Wavelengths
By Chris Parris
New Kennedy Space Center Trunked System

Milcom
By Larry Van Horn N5FPW
Who’s Who in the Milcom Radio Spectrum: Monitoring the HF OR Frequencies

Utility Planet
By Hugh Stegman NV6H
Rethinking HF Emergency Communications

Shortwave Utility Logs
Compiled by Hugh Stegman and Mike Chace-Ortiz

VHF and Above
By Joe Lynch N6CL
The Leonids Meteor Shower

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Antenna Tuner Secrets

Radio 101
By Ken Reitz KS4ZR
Cruising the FM Band with a Little Help from the Web

Radio Propagation
By Tomas Hood NW7US
The Sun Blasts a Hole in Earth’s Magnetic Shield

World of Shortwave Listening
By Keith Perron
Rich O’Shea: An American DJ in Asia

The Shortwave Listener
By Fred Waterer
BBC Broadcasts to North Korea; Reach Beyond Australia and Religion on Shortwave

Amateur Radio Astronomy
By Stan Nelson KB5VL
Solar Eclipse VLF Effects

The Longwave Zone
By Kevin O’Hern Cary WB2QMY
2200m/630m: Are You Registered Yet?

Adventures is Radio Restoration
By Rich Post KB8TAD
Putting the Spark back into a Sparks-Withington (Sparton 141X)

Antenna Connections
By Dan Farber AC0LW
Transformations: Getting From X to 50

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 181

The antenna on Rocky Top
The University of Tennessee Amateur Radio club has a set of antennas nestled between the lights at the top of Neyland Stadium in Knoxville. The tower is so high, most of the 102,000+ fans wouldn’t ever notice it. With the lights on, it’s impossible to catch a glimpse.
K4HCK

Portable AllStarLink node
Raspberry Pi 3 + Baofeng BF-888s connecting to a 4G LTE hotspot.
KP4IP

Ham Radio network keeps Capital commuters rolling along
The Capital District Commuter Assistance Network is a group of operators who provide information about travel hazards.
The Record

Thank you for my signal report
Maybe this is a radical idea but for my own operation I will strive to start sending more accurate reports and help the other station truly know how they are being copied.
AA4OO

Building a feedline HF choke
The choke has a resistance of over 1000 ohms on most of the Amateur HF bands, and up to 5000 ohms in the middle bands.
Daniel Estévez

Build an end fed match box
Connected to my end fed inverted L it shows decent SWR on 40 and 20m. My transceiver’s built-in ATU easily matched on both those bands.
marxy’s musing on technology

Video

NVIS event with a fence antenna
I connected to the fence using two alligator clips from the coax, one clipping to the fence and the other clipping to two 33ft radials which ran perpendicular to the fence.
VA3OSO

Antenna made from exterior Christmas lights
W6LG shows the dipole antenna and an instantaneous antenna tuner.
W6LG

USA-135M Cape San Blas lighthouse activation
The Panama City Amateur Radio Club activated USA-135M, the Cape San Blas Lighthouse.
W4RYZ

Rowboat mobile
While on vacation in Maine, I borrow a friends rowboat and go mobile maritime off the coast of Maine. I work a nice pile up and finish the day off with fish and chips.
KB1HQS

Behind the scenes at the Arecibo Radio Telescope
Matt and Tom

Baofeng UV-5R stress test: Receiver and transmitter overload
Open circuit with 5 minutes of RF, short circuit with 5 minutes of RF high power directly on the front end of the receiver.
YouTube

Resin casting tips and tricks
I cover some of the techniques that I use to be efficient when I am resin casting.
resin-casting-tips

Final TX Factor of 2017

Yes, TX Factor episode 19 is now on the air at www.txfactor.co.uk

In part one of our reports from the UK’s Hamfest 2017 we have a sneak preview of the Icom IC-7610 and IC-R8600 rigs.

We meet the new owners of PW Magazine, and Pete tries his hand at the RSGB on-line exam. There’s also an update on the Society’s EMC Committee’s findings.

Bob finds his way back to New Broadcasting House in London where the Director General discovers he has amateurs working for the Corporation. Nevertheless, Lord Hall broadcasts from the shack of the newly resurrected club station G8BBC. And, Laurie Margolis G3UML recounts an historic QSO he had from the early 1980s.

Plus, you can win a mobile linear-amp for your handie in our free-to-enter draw.

Thanks you for your continued support and we hope you continue to watch and enjoy the show in 2018.

TX Factor Team


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