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Closing out 2021, here are the top five blog posts at k0nr.com during the year. Some people may see this as a lazy way of creating one more blog post for the year without much work. This is definitely true. I hope you enjoy it anyway.

Leading the list is this blog post…a perennial favorite that seems to make the top five each year:

Getting Started on 2m SSB

This is another popular article that explains some of the details behind the 2-meter band plan. This particular article is tuned for Colorado but it also provides a link to an article that covers the topic for the USA.

Choose Your 2m Frequency Wisely

New this year, is the post about the North America Adventure Frequency, which was promoted by the ARRL Contest Update newsletter:

North America Adventure Frequency: 146.58 MHz

This post is my attempt at humor concerning the SOTA obsession of small transceivers:

The Truth About Tiny SOTA Transceivers

Once again, coming in at fifth place is one of my personal favorites that talks about proper kerchunking of repeaters. It even introduced a new Q-signal for kerchunking, although I must admit it may not be catching on.

Proper Kerchunking

Editors Choice

Just for good measure, I am including one more post that I think is notable. I wrote this one after looking around the web for a good explanation of what is a valid QSO? I never did find a good, up-to-date definition of a QSO, so I wrote one. This one may turn out to be an evergreen article but so far it has not gotten a lot of hits.

What Is a Valid QSO?

Merry Christmas and Happy New Year!

73 Bob K0NR

The post Top Five K0NR Blog Posts for 2021 appeared first on The KØNR Radio Site.

I’ve been interested in the idea of a microphone-centric radio and wrote about it here: How About a Mic-Centric Mobile Transceiver? Shortly thereafter, I discovered that QYT has introduced a VHF/UHF ham rig that has the display and controls in the microphone (Model KT-WP12).

You may want to watch the video by Tech Minds, which does a good job of introducing the radio.

I was very keen on trying this radio out, so I purchased one, paying about $110.

On the Bench

First, I did some bench tests to check the basic performance of the radio. The receiver sensitivity, transmit frequency and FM deviation all looked very good. The one specification that was disappointing was the RF power output. On the 2m band, the output power was 20.6 W, while the 70cm band was 15 W. The specification for the radio is 25 W. The power was measured using an HP 8920A RF Communications Test

I’ve noticed this on other radios from Chinese manufacturers: the basic specs of the radio check out, except the RF power level is low.

User Interface

As you might expect, cramming all of the controls into the microphone is a challenging user interface design. I spend quite a bit of time playing with the radio at home before actually using it on the air. Overall, I found the user interface to be acceptable, but several areas that should be improved.

QYT relies on the menu system to provide control of many of the settings. This is similar to the various Chinese handhelds where you push the MENU button to access the menus, followed by UP/DOWN to sequence through the menus, followed by MENU to access the specific setting. Then the UP/DOWN buttons choose the value of the setting and another push on MENU to accept it. The volume control setting is buried in this menu system, which seems like a poor choice. Fortunately, Mick/M0VMK pointed out that the volume can also be set by enabling the monitor feature (big button on the top of the mic) and hitting UP/DOWN.

This design depends too much on the menu system. A few user-defined buttons would be a real help. This radio could benefit from a serious redesign using User-Centered Design.

This radio has one receiver but allows for three independent frequencies to be displayed simultaneously. There is a scanning mode that tries to emulate a multi-receiver radio. This too is all too common with the Chinese radios…somehow they have it in their heads that this adds value for the user. My experience is that it mostly confuses the user. Most users would be better served with a single frequency display, supplemented with dual-watch and scanning capability.

You probably won’t be surprised that the user manual is terrible, also common with Chinese manufacturers, but this one is particularly bad. Same with the programming software…it mostly works (I had a few crashes) but it is poorly written.

On The Air (SOTA)

I was very interested in trying out this radio for Summits On The Air (SOTA) use. The idea is that the radio can be stuffed into a fanny pack, with the microphone, speaker, display, and controls in your hand.

The basic concept of holding everything in the palm of my hand worked out quite well. The display was visible in bright sunlight, the speaker audio was clear, and the microphone worked great. I made a number of SOTA contacts and received good signal reports. I held the microphone in one hand and pointed the 3-element Yagi antenna with the other hand. (Joyce/K0JJW assisted with logging and we took turns working the SOTA chasers.)

As soon as I fired up the radio, I heard interference on the 2m band, not very strong but noticable. It sounded like it was coming from an FM broadcast station. Pointing the Yagi antenna in the direction of the FM station on the adjacent mountain seemed to confirm the source. I did not hear any interference on the 70cm band. I’ve operated from this SOTA summit before and have not noticed any interference with other equipment, including Yaesu handhelds. Also, I switched to my Yaesu FT-90 and the broadcast station was not heard. As various people have suspected, this indicates that the receiver in the QYT is not very robust in terms of rejecting off-channel signals. Of course, this is an anecdotal report, not based on bench measurements.

I also encountered an anomaly where after my transmission, the radio did not revert back to receive quickly. There was a few seconds where no audio was coming out of the transceiver. This caused me to miss a few responses to my CQ call. This issue requires some additional investigation. It may have just been operator error on my part. However, I suspect that the radio was probably locking onto another frequency but I am not sure (see previous comments about the three frequency scanning mode). So file this issue under “stay tuned for more information.”

Note that I did not use the radio very much on repeaters, focusing on SOTA simplex operating with no transmit offset or CTCSS.

Conclusion

On the positive side, I really like the microphone-centric approach that this radio uses. The user interface can be improved but it is good enough.

The two big limitations of this radio are 1) low RF power output and 2) weak off-channel receiver performance. Now you might say that the RF power is not off by that much but my interest is having a SOTA radio that greatly exceeds the power of a typical 5 W handheld. On the 70 cm band, this radio only put out 15 W, so only 4.7 dB better than a handheld. The poor receiver performance will tend be an issue on summits that have radio installations nearby. In some cases, this can completely prevent a VHF SOTA activation.

I will probably use this radio again for SOTA activations but I’ll be bringing along a backup rig, just in case.

The post Checking Out The KT-WP12 Transceiver appeared first on The KØNR Radio Site.

From the RAIN HamCast episode #56, 2021-XII-11 (used with permission):

When you were knee high to a grasshopper, did you undergo a game-changing experience that shaped your future career?

Here is text from the introduction:

Tomas Hood/NW7US did. Tomas has been a shortwave enthusiast since 1973. He was first licensed as a ham in 1990 at age 25.

In the mid 1990s Tomas launched the first civilian space weather propagation website, HFRadio.org, which later spawned SunSpotWatch.com. His website, NW7US has been up and running since June, 1999. Tomas has contributed to the Space Weather Propagation column in CQ magazine for over 20 years, and for The Spectrum Monitor magazine since 2014.

A product of the Pacific northwest, Tomas resides today in Fayetteville, OH. RAIN’s Hap Holly/KC9RP spoke with Tomas recently about Solar Cycle 25 and the game-changing afternoon Tomas experienced in 1973 at age 8 ( Read more about this, at his amateur radio and space weather blog: https://blog.NW7US.us/ ).

Here is the first part of the two-part interview:

Mentioned in the interview is Skylab:

From Wikipedia’s article on Skylab: Skylab was the first United States space station, launched by NASA, occupied for about 24 weeks between May 1973 and February 1974. It was operated by three separate three-astronaut crews: Skylab 2, Skylab 3, and Skylab 4. Major operations included an orbital workshop, a solar observatory, Earth observation, and hundreds of experiments.

Tomas was drawn into space weather as a life-long passion, by inspiration from Skylab, and from the hourly propagation bulletin from the radio station WWV.

WATCH FOR THE NEXT EPISODE, PART TWO

This video is only part one. The RAIN HamCast will conclude Hap’s conversation with Tomas in RAIN HamCast #57, scheduled for posting Christmas Day.

Hap Holly, of the infamous RAIN Report (RAIN = Radio Amateur Information Network), is now producing The RAIN HamCast. The results are both on https://therainreport.com and on the RAIN HamCast YouTube channel, https://www.youtube.com/channel/UCUbNkaUvX_lt5IiDkS9aS4g

KEEP ON HAMMING!

The RAIN Hamcast is produced and edited by Hap Holly/KC9RP; this biweekly podcast is copyright 1985-2021 RAIN, All rights reserved. RAIN programming is formatted for Amateur Radio transmission and is made available under a Creative Commons license; downloading, sharing, posting and transmission of this ham radio program via Amateur Radio in its entirety are encouraged. Your support and feedback are welcome on https://therainreport.com. Thanks for YouTube Technical Assistance from Tom Shimizu/N9JDI.

When operating portable, I use Lithium Iron Phosphate batteries from Bioenno. Most of my portable operating is for Summits On The Air (SOTA) and I wrote about it here:

My SOTA Battery Journey

For POTA activations, I purchased a larger, 20 Ah Bioenno battery and use it to power a Yaesu FT-991 (and other radios). This battery has worked out really well. It is a bit large for backpack portable and weighs 5.4 pounds, but I have taken it along on a few SOTA activations.

Powerwerx PWRbox

I decided the battery could use a case to protect it while being tossed around in the back of the Jeep. Powerwerx has a really good battery box that includes a digital voltage readout, automotive (“cigarette lighter”) socket, dual PowerPole plugs and high-current binding posts.

Initially, I did not think I needed the extra gizmos, and I did not want to take up more space with the battery system. Later, I figured that I could always pull the battery out of the box and use it in its original form.

The power switch is handy for turning on/off the battery power and the digital voltmeter provides a simple view of the battery condition. Most of the time, I use the PowerPole connectors to connect up my radios but occasionally the automotive socket comes in handy.

I used some of the plastic packing material that came with the box to hold the battery in place. A little bit of cutting with a sharp knife produced a good fit. There is enough room above the battery for the Bioenno charger, so it makes for a nice kit. The charger connects to the original charging plug on the battery.

As expected, Powerwerx did a good job of wiring up the various components and included fuses in both the positive and negative cables. The box is big enough to hold a 40 Ah battery and I am tempted to upgrade it for larger capacity, but the 20 Ah battery has been sufficient, so far.

I’ve used this battery box for multiple POTA activations and a few other situations when I just needed to power up a radio at home. It works great. The voltmeter gives me a quick check of the battery status and the PowerPole connectors make for easy hookup.

The PWRbox costs $109.99, battery not included.

73 Bob K0NR

The post Power Box for Bioenno Battery appeared first on The KØNR Radio Site.

This is a report on my single-operator contest effort during the ARRL November Sweepstakes (Phone) HF Contest. Some other potential titles for this article are:

A Slacker's Guide to Working the Sweepstakes
How To Almost Work 50 States On a Weekend
A Simple Way to Get On the HF Bands

Contests on the HF bands can be a fun way to make a lot of contacts and get some new states or countries. The ARRL Sweepstakes promotes contacts between US and Canadian stations, so it is an opportunity to work those states and provinces.

The Club Challenge

I don’t usually work the Sweepstakes contest but Bill/K0UK put out a challenge to the Grand Mesa Contesters club to get on the air and contribute whatever points you can to the aggregate club score. I thought this was a good idea and decided to join in the effort. I already had committed to teaching a General License class on Saturday, so that limited my operating window to mostly Sunday. No problem, I could still make a significant number of contacts on Sunday.

I read the rules for the contest to make sure I knew the operating times, entry categories, what stations I could work for points, and the contest exchange. Sweepstakes has a complicated contest exchange, that includes a serial number (every contact gets a unique sequential number), precedence (operating class), your callsign, the last two digits of the year you were first licensed, and your ARRL section. Wow. For me, the section is just Colorado (abbreviated CO), but some states have multiple sections. It is a great idea to have the list of ARRL and RAC (Radio Amateurs of Canada) sections available. So the information I gave to the other station was something like this: 105 A K0NR 77 CO. In the example, 105 is the serial number that incremented with each radio contact.

Antenna Project

It turned out that my HF antenna at the house fell down some time ago because the rope holding the wire had rotted away. So my first task was to do a quick but effective antenna installation. We have a 30-foot Ponderosa pine in the backyard, which is my preferred antenna support. I have a number of wire antennas stashed away in my basement, including dipoles, end-fed halfwaves, G5RV’s, etc.

For this contest, I decided to use an end-fed antenna from MyAntennas.com, about 44 feet long. This antenna has a 9:1 matching transformer (an “unun”) that matches the high-impedance of the wire to something closer to 50 ohms. An antenna tuner is required to do the final matchup over multiple HF bands. This antenna is long enough to be effective on 40 meters and any higher band, which matches my usual operating habits. I had a Yaesu FT-950 transceiver available which has an internal tuner that was able to match the antenna on 40m, 20m, 15m, and 10m. This is not an end-fed halfwave…it is a “random” length of wire that is not resonant on any ham band but will radiate pretty well using the matching transformer. The advantage of this antenna is its simplicity and ability to handle multiple bands, with the push of the internal antenna tuner.

My main challenge was to get this antenna up into my favorite Ponderosa pine tree. Again, I took a simple approach. I grabbed my spin-cast fishing pole, attached two 5/16-inch hex nuts to the end of the line (to act as a weight), and cast the nuts up over the top of the tree. This may sound difficult, but it only took me three casts to get the fishing line on a limb that I liked. I let the line out and let the weight drop to the ground. Then I attached a 1/8-inch synthetic rope onto the fishing line and pulled it back up over the tree. Soon, I had my antenna support rope passing over the very top of the tree. It was a simple matter to attach and hoist the undriven end of the antenna to the top of the tree. The antenna is longer than the height of the tree, so I sloped the antenna away from the tree.

A length of RG-8 style coax connected the antenna and the transceiver in the ham shack. I did not ground the antenna transformer or add a counterpoise, hoping that the length of coax would be sufficient to act as a counterpoise. This worked out OK and the FT-950 was able to drive the antenna using just the internal antenna tuner on all bands.

Station Setup

You don’t have to have a computer to log your contacts during the contest, but you really should. Even with 50 contacts written on paper, it becomes difficult to remember which stations you’ve already worked. Also, the logging program automatically generates the serial number mentioned above. Very helpful.

For most contests, I use the N1MM Logger+ software, which is arguably the standard in ham radio contest loggers. It is free to use and is available here. I probably use about 10% of the power of this software but it is relatively easy to use, once you get familiar with it. It has templates for all of the contests, so it keeps track of your score and warns you if you’ve already worked a station. It automatically generates the cabrillo format for submitting your log electronically.

Results

With a 100-watt-and-a-wire station, you have to compete with much more capable stations during a contest. These folks may be running 1kW and gain antennas. I used the “search and pounce” technique, tuning around to find strong stations calling CQ. I typed the callsign into the logging program to make sure we have not already worked and then I called them, just saying my callsign. If they hear me, they will call me back, providing their exchange information. I enter that into N1MM and give them my info. It is as simple as that.

I can usually judge how well my station is doing by how quickly I can contact another station. If they answer me on the first call, that’s great. If it takes a few calls, it usually means that someone else is beating me out in the pileup. I was happy with the performance of the station — I was making contacts at a decent rate.

I made 187 QSOs in about 7 hours of operating, which works out to one contact every 2.5 minutes or so. That rate is not going to win the contest but it was good enough to keep me having fun.

The scoring multiplier for the contest is ARRL and RAC sections, with a maximum number of 84 sections. I worked 66 of them, so not too bad but not a clean sweep. I worked 45 of the 50 US states, missing South Dakota, Oklahoma, New Mexico, Utah, and Alaska. Except for Alaska, the missing states are relatively close to Colorado, so a little more time on 40m (or 80m), for shorter skip distance, would probably have gotten them. The point is that you can achieve Worked All States (WAS) on a single Sweepstakes weekend.

This is a good example of how to get an HF station up and running and make some radio contacts. I often encounter hams that are new to HF and not quite sure how to get on the air. It does not have to be complicated…get a basic transceiver, power supply, coax and a wire antenna and give it a try. Doing this on a contest weekend means that you’ll have plenty of stations to contact.

73 Bob K0NR

The post Working Phone Sweepstakes appeared first on The KØNR Radio Site.

This imagery captured by NASA’s Solar Dynamics Observatory (SDO; link) covers a busy period of activity in October, during which we witnessed an X1.0-class X-ray flare.

[embedyt] https://www.youtube.com/watch?v=fg6blJJHs10[/embedyt]

From late afternoon October 25 through mid-morning October 26, an active region on the left limb of the Sun flickered with a series of small flares and petal-like eruptions of solar material.

Meanwhile, the Sun was sporting more active regions at its lower center, directly facing Earth. On October 28, the biggest of these released a significant flare, which peaked at 15:35, 28 Oct 2021 UTC.

This X1.0 X-ray flare that erupted from Active Region 12887 (we typically drop the left-most digit when referring to an active region, so this is AR2887) is the second X-class flare of Solar Cycle 25, as of the time this video goes live.

The first X-class flare occurred on 3 July 2021 and measured X1.59. It, too, caused an HF radio blackout. These blackouts will occur more often as the cycle activity increases, because the higher sunspot activity leads to many more flares, and thus cause the geomagnetic storms as the typical CME is erupted out into space, possibly colliding with Earth’s magnetosphere.

Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground. When intense enough, they can disturb the atmosphere in the layer where GPS and communications signals travel. Some of these disturbances to communications are called radio blackouts. They cause the lower layers of the ionosphere to become more ionized, which results in the absorption of shortwave radio frequency signals.

This flare on October 28 was classified as X1.0 in intensity. X-class denotes the most intense flares, while the number provides more information about its strength. An X2 is twice as intense as an X1, an X3 is three times as intense, and so on. Flares that are classified X10 or stronger are considered unusually intense.

This was the second X-class flare of Solar Cycle 25, which began in December 2019. A new solar cycle comes roughly every 11 years. Over the course of each cycle, the Sun transitions from relatively calm to active and stormy, and then quiet again; at its peak, known as solar maximum, the Sun’s magnetic poles flip.

Two other eruptions blew off the Sun from this active region: an eruption of solar material called a coronal mass ejection and an invisible swarm of solar energetic particles. These are high-energy charged particles accelerated by solar eruptions.

Credit: NASA/GSFC/SDO

Thanks for liking and sharing!

73 de NW7US dit dit

Lately, Joyce/K0JJW and I have been doing combined Summits On The Air (SOTA) and Parks On The Air (POTA) activations. Most of the SOTA summits we activate are inside parks as defined by POTA. Our primary focus is using VHF/UHF from SOTA summits with POTA is being a nice addition. Although the two programs have a lot of similarities, there are some significant differences that need to be understood.

SOTA / POTA Differences

Let’s compare the two programs to understand the differences, so you can have a successful activation with both. We will focus on differences when doing an activation so this is not an exhaustive list.

• Summits Vs Parks. Well, this is the fundamental difference. Summits tend to be small in area, defined by a specific lat/lon coordinate and the surrounding activation zone (AZ). The activation zone is roughly defined as the area surrounding the actual summit, staying within 25 vertical meters. Parks can be almost any size and may cover many square miles. Both SOTA and POTA maintain lists of official summits or parks, so it should be clear whether one of these is valid for an activation.
• Accessibility. While there are drive-up and easy walk-up summits, most SOTA summits require a hike. Many of them are physically challenging. Parks often have easier, park-like access. Or you can always do a 50-mile backpack trip for a POTA activation.
• Equipment restrictions. SOTA allows you to reach the activation zone in a vehicle but you must move away from the vehicle an unspecified distant and operate totally independent of the vehicle. On drive-up mountains, our practical application of this rule is to load up our normal SOTA gear into backpacks, hike away from the vehicle, and set up for the activation. SOTA requires the use of portable power sources but not fossil-fuel generators. This pretty much means battery power, perhaps augmented with solar panels. POTA does not have such restrictions, so if you meet the SOTA requirements you’ll be valid for both.
• Scoring. SOTA emphasizes the accumulation of activator and chaser points, while layering in other challenges such as Summit-to-Summit (S2S) scores. Each summit has a point value assigned to it, based on elevation. In POTA, all parks are created equal and the main focus tends to be on the number of activations and the number of parks hunted (chased).  POTA also has awards for the number QSOs. For example, the Kilo Award is achieved by making 1000 QSOs from a single park (usually over multiple activations). Both programs have quite a bit of variety and flexibility built into their awards and operating objectives, which is one of the reasons people enjoy the programs.
• Successful Activation. SOTA requires only one radio contact for a successful activation. But to receive point credit for the summit, which is what most people are after, you need to make at least 4 contacts. So most SOTA activators define success as getting at least four contacts. The 4 SOTA contacts must be with 4 different stations, with no credit for working the same station on multiple bands. In contrast, POTA requires 10 QSOs for a successful activation.  POTA does count QSOs with the same station on different bands. For example, an activator could obtain the required 10 POTA QSOs by working just two stations on 5 different bands.
• Same Location QSOs. A SOTA activator does not get credit for working another station on the same summit. That is, the other station must be outside of the summit activation zone to be counted. POTA allows an activator to work another activator in the same park for QSO credit. In fact, the activators can receive park-to-park credit for such a radio contact.

VHF SOTA and POTA

Racking up lots of contacts on VHF/UHF from a summit can be a challenge, dependent mostly on the range of your gear and the ham population in the area. Most of the time, we can get four contacts without too much trouble but at times even that can be a challenge. Getting ten contacts for POTA raises the bar higher.

We noted that most of the hams we work on 2m FM are also workable on 70 cm FM. So an easy thing to do is to ask 2m chasers (hunters) to switch over to 70 cm and work us there, doubling the number of POTA-valid QSOs. Interestingly, the SOTA QSO count recorded in the database includes these QSOs. (But you must have contacted at least four unique stations to get the summit points.)

Because Joyce and I usually activate together, we can also work each other for POTA credit. I have discovered that many POTA activator teams make it a standard practice to pull out a couple of handheld radios and work each other on 2m FM when they first set up. OK, maybe that’s not the most exciting QSO of the day, but it is allowed.  With a dual-band HT, you can make two QSOs this way. And it is a good idea to put out a call on 2m FM to work any locals that might be hunting parks. On a summit, these QSOs would not be valid for SOTA, unless one of the operators leaves the activation zone. Yes, we’ve done that, too, taking turns hiking down out of the AZ to make a quick contact.

Summary

This covers some of the things we’ve learned about doing combined SOTA and POTA activations. Again, this is with an emphasis on VHF/UHF operating. You should study the SOTA and POTA rules carefully because this article does not cover everything. However, some of the issues I’ve outlined here are not obvious from the SOTA and POTA rules, so I hope you find this article helpful.

73 Bob K0NR

The post Combined SOTA / POTA Activations appeared first on The KØNR Radio Site.