Archive for the ‘Uncategorized’ Category

DMR Plus – The Network that is Gaining Popularity in the West

When it comes to DMR, people usually think of Brandmeister. But there is another network rapidly gaining popularity in North America worthy of your attention – DMR Plus. DMR Plus gives you many of the same features as Brandmeister such as talkgroups, SMS messaging, private call, reflectors and more. The main difference is DMR Plus presents these features in a well thought out manner which allows for outstanding flexibility when it comes to the way we communicate.

Doing a google search for DMR Plus comes up with the following from the DMR-MARC website:

DMR Plus is the original network that developed tools to interconnect ETSI Tier 2 DMR repeaters. It has been popular in Europe for years but now, with the cooperation of DMR-MARC, it has finally arrived in North America and the South Pacific. The DMR Plus architecture is similar to D-Star. Users have talkgroups to converse, to disconnect, and to monitor channel status. Users choose from a large pool of reflectors and move back to the converse talkgroup for all QSOs.

The DMR-MARC and DMR Plus partnership is ideal. The DMR-MARC network is robust and reliable. The DMR Plus network is more aligned with experimentation and interoperability of technologies. Think of DMR Plus as the best possible implementation of the former DMR-MARC Sandbox.

DMR Plus also supports a configuration that features the traditional DMR-MARC talkgroups like Worldwide English, North America, Latin America, etc. on TS1 and the DMR-Plus reflectors on TS2. The USA Regional talkgroups and the Canadian Provincial talkgroups are now connected to the TS2 reflectors.

Like Brandmeister, DMR Plus uses talkgroups (many of which are bridged between the two networks such as TAC310, World Wide 91 etc) but they also use reflectors. A reflector is kind of like a hub that allows you to communicate with everyone else that is also connected to that same reflector. But on DMR Plus, the reflector itself can be bridged to either another talkgroup, another reflector or even another network or digital voice mode.

One perfect example of this is the QuadNet Array. The Array brings the most popular digital voice modes under the same roof. You can find the QuadNet Array on reflector 4551 or DMR Plus talkgroup 320. By connecting to either of these your transmission can be heard by users on DMR Plus but also Brandmeister 31012, Yaesu System Fusion reflector 37099, D- STAR reflector XRF757A, Smart Groups DSTAR1 and more. For a complete overview of the QuadNet Array visit the QuadNet website at www.openquad.net.

You can also find an updated list of DMR Plus reflectors at https://www.dmr-marc.net/FAQ/dmrplus-america.html.

One thing that stands out in my experience is that DMR Plus appears to have better audio quality than Brandmeister. I find much fewer dropouts and lower packet loss on the DMR Plus network.

So, what do you need in order to give DMR Plus a try? If you are running a Pi-STAR based hotspot you are good to go. The OpenSPOT will also allow you to use DMR Plus. However since I have not had the opportunity to use one I am not able to give you specific setup instructions. Refer to the OpenSPOT website and Facebook group for more information.

In Pi-STAR version 4, do the following:

  1. Login to your dashboard
  2. Click on configuration
  3. Scroll down to DMR Configuration
  4. Under the DMR Master setting select IPSC2-Quadnet and click on apply settings.

While you can use any IPSC2 server you like, I recommend IPSC2-Quadnet because it is very well maintained and extremely stable. We make sure it is up to date with the latest software version which provides the newest features and bug fixes and I personally feel our technical support team is second to none. We are very responsive when it comes to support requests as well as adding requested DMR Plus talkgroups to the server. If there is a talkgroup you are having difficulty accessing on IPSC2-Quadnet send an email to [email protected] and let us know the DMR Plus talkgroup number and time slot and we will add it to the server.

Once your hotspot returns to the configuration page, enter the following in the options= box

StartRef=;RelinkTime=120;UserLink=1;TS1_1=320;TS1_2=;TS1_3=;TS1_4=;TS1_5=;

Once entered, click on apply changes.

What this line means is you are having our hotspot not automatically link to a reflector upon startup. If you want to setup a default reflector, enter the reflector number after the StartRef= command. RelinkTime means if you do link to a reflector it will automatically disconnect after 120 minutes if you don’t key your mic to reset the timer. If you have a default reflector set and change to a different reflector your hotspot will automatically return to the default reflector after the time expires. UserLink tells your hotspot to allow you to link to talkgroups and reflectors via RF. The TS1 lines setup static talkgroups. In this example I entered talkgroup 320 which is the QuadNet Array. I use the talkgroup for the QuadNet Array instead of selecting reflector 4541 because this allows me to monitor the Array and use reflectors at the same time. Very convenient when listening for a call while tuning around the various reflectors searching for activity.

Now in your radio code plug you will want to do the following:

Setup a contact for talkgroup for 320 and then add this contact to a channel and zone in your radio code plug. You will want to do the same for any other talkgroups that you would like to use and add them to your radio. Talkgroup 320 is what you would use to talk on the QuadNet Array multi protocol network. So if you have a friend that uses D-STAR, Yaesu System Fusion, Brandmeister DMR etc you can still talk with them on the Array. You can also use this talkgroup to talk with the administrators of the IPSC2-QuadNet server in case you notice a problem or have a question.

Add any reflectors that you would like to use (see the link earlier in this article to find the list of available DMR Plus reflectors) in your radio code plug as well. Any reflector you want to add needs to be setup as a private call in your contacts instead of group call. Then create a channel with the reflector contact that you just created, then add the channel to a zone. To link to a reflector you will then have easy access by selecting the zone you just programmed these into. When selected, key your mic and you should get an acknowledgement that you are now connected to that reflector.

You will also need to add a contact, channel and zone for talkgroup 9 (groups call, not private call) in your radio code plug. This is the talkgroup you will need to use when talking on a DMR Plus reflector.

While you are setting up your code plug, you will want to make sure you have your friends contact information setup in your radio and set these contacts as private call instead of group call. This is how you will initiate a private call to talk radio to radio outside of any talkgroups or reflectors. Private call is similar to call sign routing on D-STAR in that it allows you to talk with the other station radio to radio without using a talkgroup or reflector. The two of you can have a relatively private conversations and not get in the way of other users. You will also use this contact if you want to send them a SMS message.

I hope you decide to give DMR Plus a try. If you have any questions you can usually find me on the QuadNet Array talkgroup 320. If you prefer you can also contact me via email. I can be reached either at [email protected] or [email protected].

Hams prepare for 2019 Scout Pacific Jamboree at Camp Barnard

I wanted to share that I will once again be running a Ham Radio Station at the BC/Yukon Pacific Scout Jamboree being held July 6 – 13 at Camp Barnard in Sooke BC Canada, a 250 acre scout camp on Young Lake.

I ran this same station in 2015 and of the 3,000 scouts attending the Jamboree, some 350 of them came to our Ham Radio Station to earn a Ham Radio badge at Camp Barnard.

We anticipate the same number of scouts, (i.e. boys and girls aged 11 – 14 years old), to attend this year’s Jamboree and a similar number, (350 – 400) to visit our station to earn a badge. Our club call sign is VE7SHR (i.e. for Scout Ham Radio).

A Scout Pacific (BC / Yukon) Jamboree like other Jamborees are held every 4 years. In 2015 it was the first Jamboree at Camp Barnard in many years and cost over a million dollars to put on with improvements and additions to roads, water and power lines, added washroom facilities, dock extension, food deliveries, fire, police and medical preparations, (i.e. we have an onsite hospital set up), etc. etc. and requires hundreds of volunteers.

Having just earned my VA7RTB Ham Radio Certification in early 2015, along with the Camp Ranger Willy Burrows VE7WRB, and with the 2015 Pacific Scout Jamboree only months away, we decided to try our hand at running a Ham Radio Station. Help from a much more experienced advanced Ham, Chris Carr VE7BAC, from BC’s mainland didn’t hurt either!

As a volunteer organization and little money however, we put the word out to the local Ham community for the donation of any used / unwanted Ham Radio equipment. We were overwhelmed with the response with donations of radios, towers, antennas, coaxial cables, power supplies etc. etc. We also were given permission to share the archery room to create a permanent Ham Shack as seen in the pictures below which needed some extensive renovations to accommodate us.

Although a lot of the equipment donated was outdated or not working, there were some very usable pieces, plus the donations that Chris brought over from his scrounging over on the mainland, made our shack operational. One bonus was being able to purchase a brand new Yaesu FT-8800 from the Jamboree fund for our permanent shack.

So, with a 20’ X 20’ rented army tent, we set up our Ham Shack and waited for all 3000 youth to arrive, but not sure how much interest our station would actually generate. Well, we didn’t have to wait long, as scouts, (i.e. boys and girls aged, 11 – 14), seemed to gravitate to us and were keen to earn a “generic” Ham Radio badge. Being located next to the badge trading station didn’t hurt either. We were however, in fact blown away by the interest and enthusiasm of the youth. Originally we had them complete six activities to earn a badge, however as we were quickly running out of badges, we upped the requirements to completing 9 activities, and still we ran out of badges in the end.

As an example of the positive responses we got, Chris said that we had more youth attend our station on day one, than attended the week long Ham Station a year earlier at the “Canadian Jamboree” that was host to 2 & 1/2 times as many scouting youth as our provincial Jamboree. It was also great to have the youth make HF contact with other Hams in Alaska, Russia, the Virgin Islands, a weather ship at sea and even Disneyland.

Other events at the 2015 Pacific Jamboree included, canoeing, rock climbing, an overnight hike, scuba diving, visiting the town of Sooke, log rolling, a variety of arts and crafts, robotics, swimming, log pole climbing and ax throwing, to mention a few.

So, with the 2015 Pacific Jamboree over, we immediately set our sights on planning for 2019. We continued to try and improve our equipment, designed a more Ham Radio specific badge, (as seen in the email below), and looked at some new activities to involve the youth in such as Morse Code keying, and having them look up available Call Signs. We have also, as in the last Jamboree, invited local Hams to either come out and assist us, or at least call in to our station on their radios. We are also negotiating with another Ham to borrow his 30’ Ham Radio trailer to be present on site at the Jamboree.

We are also looking at setting up a second Ham Shack location on site as it is a larger space and can accommodate bigger groups throughout the year. (We haven’t determined yet exactly which frequencies we will be monitoring but that will come.)

So what’s next? We have already heard that the Francophone Scouts are scheduled to hold their Jamboree at Camp Barnard in 2020,as well as the Girl Guides holding there SOAR Jamboree there that same year. Again, some 3,000 Girl Guides are planning to attend. Plans are in the works for both of these events, for us to offer a Ham Radio Station. We also plan to participate in the “Scout Jamboree On The Air” (JOTA), held every October, and we do smaller presentations to Beaver, Cub and Scout groups throughout the year when asked.

Digipeating the ISS, RTTY and QRP

Stories you’ll find in our May, 2019 issue:

Digipeating: APRS to the International Space Station – At Your Convenience
By Richard Fisher KI6SN

Making contact with the International Space Station by amateur radio is challenging on its face—the ISS orbit must be somewhere above your horizon; it is a moving target, and your antenna needs to be tracking its position as the space station moves across the sky. For FM voice contact, you may be in competition with lots of other Earth-based stations with the same goal as yours. But, thanks to the ISS’s digital repeater, contact with ISS is quite possible, but even so, for success, there are still lots of stars that must align. Richard tells us how it’s done.

TSM Reviews: The Mobile VHF/UHF COMPACtenna
By Bob Grove W8JHD

Is it possible for a 7.5-inch antenna to provide equal, or even superior, performance compared to a conventional 18-inch whip? After all, doesn’t a longer element capture more signal energy than a smaller element? Even with some reduction in signal strength, would overall improvement in uninterrupted reception translate to better performance? Bob examines this new mobile VHF/UHF antenna.

TSM Reviews: COMPACtenna for Shortwave
By Chris Parris

Chris was recently offered a chance to use the COMPACtenna SW (shortwave) model at home. The “SW” specifications show that it is 20 inches tall, designed for continuous receive over 3 MHz to 30 MHz and uses a standard 3/8-inch – 24 thread mount that most CB antennas are designed for. As someone who has tried for many years to find a good mobile/portable shortwave antenna solution, this seemed too good to be true. He decided to take the COMPACtenna out and try it on his personal vehicle along with several radios and other shortwave antennas to see how it fared.

RTTY: Old School Digital
By Cory GB Sickles WA3UVV

In his previous articles about other forms of digital communications as well as his three-part series on “Piggy Bank Ham Radio,” Cory found that there appears to be a good deal of interest in radioteletype and a desire to use some older gear. Coupling that with questions about pre-1990 HF rigs, there would seem to be a convergence of ideas. While older gear may not be suitable for the latest in digital modes, they are still perfectly fine radios and the fun of RTTY awaits you – with several ways to get on the air. Cory traces the history and continued use of this vintage amateur mode.

CRKits HT-1A Dual Band QRP Transceiver
By James Hannibal KH2SR

This dual band transceiver, available as a kit or factory-built, has a transmit frequency range of 7.0-7.2 MHz and 14.0-14.35 MHz. And, even though it only transmits CW, it does have the ability to listen to SSB signals. It also has an extended receive range, covering everything between 5.9-16 MHz, which means shortwave broadcast reception while in SSB mode. James puts this little rig to the test as it was meant to be used, outside in the wild with a small battery pack and portable antenna.

Scanning America
By Dan Veeneman
Groton, Connecticut; Amtrak Update

Federal Wavelengths
By Chris Parris
Have Scanner, Will Travel

Milcom
By Larry Van Horn N5FPW
Monitoring the 14thFighter Training Wing

Utility Planet
By Hugh Stegman
South Korean HFDL Takes Off

VHF and Above
By Joe Lynch N6CL
Owen Garriott W5LFL Silent Key

Digitally Speaking
By Cory GB Sickles WA3UVV
Get Yourself Connected

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Are You a Member of the “Tower Tribe?”

Radio 101
By Ken Reitz KS4ZR
Baseball on the Radio: 2019

Radio Propagation
By Tomas Hood NW7US
E-Layer Sporadic Ionospheric Propagation

The World of Shortwave Listening
By Jeff White, Chairman, HFCC
Shortwave Broadcasters Discuss Future of the Medium and Time Changes or Does it?

The Shortwave Listener
By Fred Waterer
Radio Lectures; Classical on SW and Radio Santa Cruz

Amateur Radio Astronomy
By Stan Nelson KB5VL
Long Duration Meteor Trails

Adventures in Radio Restoration
By Rich Post KB8TAD
Millen’s Ham Superhet: The National FB-7

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About That (Expletive) ARRL Proposal to Give Technicians The Whole World

It is my observation that by enabling someone a taste of what can be accomplished on HF (shortwave) spectrum, especially using one of the newer digital modes, that someone has an opportunity for inspiration, perhaps enough to catch the HF fever that is required to move that someone from entry-level to experienced, skilled expert. Right now, the regulations limit the Technician-level license holder to digital operation only on bands that barely propagate (if at all!) during the weak solar cycles. It is a far stretch to postulate that having privileges on dead bands will inspire exploration and tempt the operator to upgrade to a higher license class.

I believe that Technician-class priveledges should be expanded so that entry-level amateur radio operators can get a practical taste of effectively-propagating HF signals on lower frequencies than those frequencies currently available to them for digital operation. And, the allowed mode on these subbands should include digital modes. This “would encourage a sustained interest in Amateur Radio and encourage further development of knowledge and operating skills,” a concept already proven by General-class operators that get enough of a taste that they then pursue the Amateur Extra license.

Comments to me are below the following video section. I also include my response.

In the following video, I share my opinion regarding the ARRL asking the FCC to grant more operating privileges across the many amateur radio allocations on shortwave (HF, or, High Frequencies). The video is my brief takeaway of ARRL’s petition: What is the issue, as a whole, and what the ARRL is addressing–the lack of desire by most current Techs to upgrade. The logic of my perspective concludes that if you give them a taste of lower-shortwave propagation and excitement, then they will want to upgrade. This logic is already proven as applicable by the fact that the General class exists. All this proposal will do is allow the tech to experience what could be very attractive. Just like for the General.

The next two videos are addendums to the first video:

I made a few technical mistakes in the first video. The last video contains corrections and further comments.

Comments Received, and My Response

I have received many responses–some in opposition, some in support. Here are example contrarian responses along with my reply:

[Dear] Tomas David Hood[:] Something for absolutely nothing has never taught anyone anything good, but to want another free lunch. 35 multiple guess easy questions was all that was asked to get general class privileges, but that’s just too hard for the current class. Something for nothing is what sell today, and the ARRL, and probably half the country thinks socialism is the way to reach the new hams I guess. But the ARRL will never get another dime from me. You want a trophy or additional privileges, Get them as everyone else did,, Work for them, study, just a little is all that was asked. Remember, If it didn’t cost anything, it probably isn’t worth anything!

If they are not willing to take a simple test, and yet they want to upgrade, then yes they are the same as saying that we are asking too much, but would participate, you are suggesting, as long as it didn’t require any work or effort on their part, Its a shame.. And I am embarrassed on their behalf… Alexandria Ocasio-Cortez could pass that test, but she would probably agree with you, that people are asking them to be smart and study, and that’s somehow probably racist and just over the line for you.

At this point the ARRL should just say, we are not protecting the spectrum, but about selling the ham radio spectrum to the highest bidders. In this case, they be;live that will be the techs who will purchase HF gear, and of course, the ARRL will benefit hugely from the equipment makers desire to market to the group.

My response is:

What the heck is wrong with selling radios?

But, seriously, which of the many Technicians say that they want to upgrade? That’s the point: the majority of Technician-class amateur radio operators are not upgrading. They get on VHF and above, and are stationary, with few realizing that there’s so much more than the aspect of the hobby evident in their local community.

With little to no exposure to other aspects of the hobby, the typical ham in the current ham-radio culture settles for what is presented by local mentors. Weather spotting, DMR, etc.

Because they have current HF privileges that have so little practical use (CW only on lower frequencies; voice on 10 meters which doesn’t propagate well during this period of no sunspot activity…), they see no incentive to delve into what appears like a waste of time.

The proposal is not giving away the farm. It simply adds a small slice on a limited set of HF bands (but where a signal has a better chance of propagation), allowing for Technician-class operators to get a real sense of the potential waiting for them if they pursue the General.

Then, once upgraded to General, they get even more exposure, and hopefully, see why it is great to be an Amateur Extra.

Tomas David Hood what’s wrong with selling radios. Nothing at all, but if I removed the test that drivers take to show they understand the rules and how to drive, then I can sell more cars and more insurance to poor drivers. Do you or anyone else think that’s a good idea. A few tech’s putting their hands on the plate of those high voltage amps, and maybe, just maybe, someone will believe me when I say some basic testing should be required for HF privileges. Now, all they will have is a cereal box license in my book, and in the opinion of many of my friends, so it;s not just me. If I am wrong, then there are a lot of people that are wrong like me, and they will fight for there hobby. I am a ARRL VE, but I will never test another Ham if this goes through, and I will spend the rest of my days making sure any newcomers realize what the ARRL did to what once was a good hobby, and how a few people didn’t seem to understand why giving away free privileges is always bad for our society, and always bad for our hobby.

Actually I have a real case study that is local,, and yes the guy doid put his hand on the plate, and yes he hit the floor.. and yes, after I found out he was ok,, I think it’s plenty funny,, Yes, they need to study more than that.

Me:

Your argument that Technician-class operators will kill themselves because the test is so easy that they will end up electrocuting themselves is yet another Red Herring. Technicians play with dangerous VHF, UHF, SHF equipment, with ominous dangerous aspects deserving respect. If you really think that the General test is the difference between life and death, why even worry? The number of technicians will be nicely reduced to a more acceptable, comfortable number.

I’ve seen Amateur Extra-class operators do the same sort of dangerous, life-threatening stunts.

The issue you are highlighting is a different problem that must be solved separately from the idea of creating a more practical incentive; all tests should be improved in such a way as to foster greater technical knowledge and awareness of all aspects of the hobby.

Better mentoring. Less us-vs-them. More education. More community. All of these should be explored and enhanced. Solve the problem, instead of ostracizing. And, realize that this proposed change is NOT a dumbing-down maneuver to give away the ham radio hobby to the unclean.

Radio Direction Finding using KerberosSDR

Traditionally we’ve seen radio direction finding (RDF) in the form of Doppler kits and tone meters, however with the proliferation Software Defined Radio (SDR) we’re seeing a new form of direction finding.

Essentially if you take four software defined radios and coherently link them together, you can then compare the signals from four separate antennas to get a bearing of your target signal’s location.

I recently came across a project on Indigogo which offered this in a complete package called the KerberosSDR. Here is a video of my setup and a demonstration of this radio.

The KerberosSDR is still under development, but from my tests it works fairly well. Unfortunately, I don’t have any traditional RDF gear to compare it to but from what I’ve seen it’s certainly a potential way to go if you’re looking to have some fun with RDF and want some more modern gear.

If you’re interested in the KerberosSDR, you can find more information about it here:

https://indiegogo.com/projects/kerberossdr-4x-coherent-rtl-sdr

Amateur Radio Weekly – Issue 235

Amateur Radio Weekly

Last chance: 2019 State of the Hobby Survey
This benchmark can help us determine what is working and what is not in the ham radio community. This can involve participation, recruitment, mentoring and licensing. It can also help identify new and emerging trends in amateur radio. Please take a few minutes to complete the survey and share with others in the hobby.
N8RMA

ISS SSTV transmissions April 1-2
Cosmonauts on the International Space Station will again be transmitting SSTV images, April 1-2, on 145.800 MHz FM as part of the Inter-MAI-75 experiment.
AMSAT UK

FCC considers changes to Amateur Radio Licensing
The FCC has invited public comments on two proposals to change the licensing requirements for amateur radio operators.
K0NR

Bryan Broadcasting Asks FCC to Allow All-Digital AM
Permitting such modernization would “give AM broadcasters a needed innovative tool with which to compete” without harming others in the spectrum ecosystem.
Radio World

6 meter amplifier — testing and setup
I’ve added a TE Systems 0510G 6 meter amplifier set up for 10 watts in and 170 watts out.
K5ND

ARES helps Iowa water utility resolve RFI issue
After a process of elimination, the ARES volunteers pinpointed the interfering signal.
ARRL

How to get into DMR without a radio
It begins by acquiring a special USB Dongle that contains an analog to digital and digital to analog IC chip.
Southgate

Making a 1940s radio digital with nixies
The rest of the build consists of fixing up an old radio and gluing the veneer down again with modern glues that will last another seventy years.
Hack A Day

Video

Volunteer first responders use CB Radio
Volunteers at Imperial Dam Long Term Visitor Area in California use CB Radio as communications method.
YouTube

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Ham-flavored STEM, the ISS Calling CQ, and Grounding

Stories you’ll find in our April, 2019 edition:

TSM Reviews: Uniden SDS100 Base/mobile Scanner
By Larry Van Horn N5FPW

On the heels of the release of the SDS100 handheld scanner in the first quarter of 2018, Uniden announced the release of the SDS200 base/mobile scanner in January 2019. Like the SDS100, the SDS200 is a True I/Q™ scanner, that incorporates software defined radio technology to provide improved digital performance in even the most challenging RF environments.

What sets the SDS100/200 series scanners apart from any others in the marketplace is their ability to handle simulcast reception issues while monitoring certain P25 trunk radio systems. Larry takes a look at this talented scanner in part two of “The Good, the Bad and the Ugly.”

Bringing Ham Flavored STEM into the Classroom
By Martha Muir W4MSA

Members of the North Fulton Amateur Radio League (NFARL) spent a week working with some seventh and eighth grade students at Mill Springs Academy in Alpharetta, Georgia, teaching them some fundamental concepts of electronics with direct applications related to amateur radio. This is part of a program at Mill Springs called Winter Learning, where students get to take a weeklong seminar on a specialty topic. This specialty topic, “Electricity is Magnetic!” was organized by NFARL members, Chuck Catledge AE4CW and Jim Stafford W4QO. Martha tells us what happens when Science Technology Engineering and Mathematics meets amateur radio in the classroom.

Portable Airband Transceiver Overview
By Cory GB Sickles WA3UVV

The VHF spectrum is full of FM analog and various forms of digital voice and data communications, but also found there are communications based on a technology that goes back a century and then some—AM or Amplitude Modulation. This is the type of signaling shared by commercial and general aviation pilots, as well as the men and women on the ground that communicate with them to keep everyone safe and moving efficiently. If you live near an airport of any size you may have wondered about listening in. Cory takes a look at listening to this small but important slice of the spectrum.

Othernet’s Free Satellite Service Continues to Evolve
By Kenneth Barbi

The free one-way digital satellite service, known as Othernet, has been evolving since its debut in 2017. Othernet had operated first on Ku-band and then on L-band, and though coverage was worldwide, the cost was astronomical, and the throughput was limited to 20 MB per day. By reconfiguring their operation back to Ku-band, costs came down and throughput increased to more than 1 GB per day. But the change required different hardware. Kenneth updates the latest on this non-profit information service.

Scanning America
Dan Veeneman
TETRA System; FCC Actions; Clark County, Ohio

Federal Wavelengths
By Chris Parris
Federal Radios Fading Away?

Milcom Monitoring
By Larry Van Horn N5FPW
Monitoring the Pakistan-India Navies

Utility Planet
By Hugh Stegman
North Korean “Numbers” Messages Continue

Shortwave Utility Logs
By Mike Chace-Ortiz and Hugh Stegman

VHF and Above
By Joe Lynch N6CL
ISS Astronauts are Calling CQ Students

Digitally Speaking
By Cory GB Sickles WA3UVV
Split P Soup

Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Down to the Wire

Radio 101
By Ken Reitz KS4ZR
ATSC3, 4K and 5G: What Next?

Radio Propagation
By Tomas Hood NW7US
A New Cycle is Born

The World of Shortwave Listening
By Rob Wagner VK3BVW
Hunting Shortwave Schedule Changes

The Shortwave Listener
By Fred Waterer
Slovakia on Shortwave, RNZI, Plus BBC Programming this Month

Maritime Monitoring
By Ron Walsh VE3GO
Winter Winds, Spring Melt and Radio

Adventures in Radio Restoration
By Rich Post KB8TAD
Still a Thrill: The National SW3 “Thrill Box”

Antenna Connections
By Dan Farber AC0LW
Well Grounded: A Down to Earth Station

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.


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