[*] [-] [-] [x] [A+] [a-]  
[l] at 11/27/22 5:39pm
In episode #489 of Linux in the Ham Shack, Russ, K5TUX, and Bill, NE4RD, comment on my blog post, Is this the beginning of the end for CW DXing? First of all, Bill didnt quite get my point (which could be entirely my fault for not making my point more clearly). I was trying to raise the issue of some DXpeditions operating only FT-4 and FT-8, thereby leaving CW operators out in the cold. Bill picked up on the second point, which is that it may be considered hypocritical for CW ops to complain about this. I wrote, We CW operators often say that one reason for operating CW is that it’s easier to work DX on CW than phone. So, I guess it’s a bit hypocritical to bad mouth FT8 just because FT8 makes it even easier to work DX. Bill went on to speculate about the possibility of sending remotely-controlled stations to DX locations instead of sending people at all. I have written about this several times: Will we soon be operating DXpeditions remotely? DXpedition to use FT-8 robots? Frankly, Im a little surprised that we havent seen this already. I guess it would be kind of difficult to put up a 160m antenna remotely. Assuming that hurdle could somehow be overcome, I say, Why not? Building some kind of remote station has got to be less expensive than sending a dozen or more hams to a rock in the middle of nowhere, and it could operate for longer than just a couple of weeks. Russ then went off on a little bit of a tangent. He compared operating FT-4 and FT-8 to using computer-generated Morse Code during contests. In my mind, theyre not really comparable. I use N1MM and a WinKeyer during contests, but I still have to copy the code and log the contacts. All that can be automated with FT-4/8. Russ then asked, Would I want to work a piece of machinery that landed in a place and was spewing FT-8 and autocontesting? His answer was definitely not. Im not sure thats the feeling of most DXers, though. I think that most hard-core DXers wouldnt care at all. The thrill for them isnt to make contact with the person at the other end, but rather to get a confirmation that their signal was heard in some far-away place. I kinda wish that theyd had me on the show to discuss this idea. It was, however, one of their short topic episodes, so I understand completely why they didnt. Its an interesting idea, though. The post More on FT-8 and DXpeditions appeared first on KB6NUs Ham Radio Blog.

[Category: Digital Modes, DX, Operating]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/26/22 8:22pm
For the last year or so, Ive been the net control station for our clubs 2-meter net, which takes place on Monday evenings at 8 pm Eastern time on our club repeater on 146.96 MHz. Lately, weve had a couple of youngsters check in. Last week, one of them had his sister check in (well, say hi, at least). Weve had a great turnout, too. On November 14, we had 17 check-ins, and on November 21, we had 22 check-ins. Working the DXpeditions Over the last few weeks, Ive been fortunate to work three of the African DXpeditions, including: D60AE  Comoros. See the video above. 5V7RU Togo J28MD Djibouti All three were new countries for me, and I worked all of them on 30 meter CW. In addition, I worked 5V7RU on 40 meter CW. Im not a big DXer, but it is fun to work them when you can. For a list of current and upcoming DXpeditions, see NG3Ks Announced DX Operations. 30 meter propagation Speaking of 30 meters, propagation was kind of rough this evening. I headed over there because the CQWW CW contest is on this weekend, so using 40 meters or 80 meters was out of the question, unless I wanted to participate in the contest. I did manage to eke out on QSO, but the signals were so weak that we couldnt really continue past the first exchange. So much for the WARC bands (30 meters, 17 meters, and 12 meters) being alternatives during contest weekends. The post Operating notes: Club net, DXpeditions, 30 meters appeared first on KB6NUs Ham Radio Blog.

[Category: Everything Else, 30 meters, Comoros, Djibouti, nets, Togo]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/20/22 12:11pm
Amateur radio-aided rescue highlights useful hobby BUFFALO [Wyoming] — Two miles from U.S. Highway 16, a Nebraska man drove his truck through Crazy Woman Canyon before he slid off the road on Halloween night. Unharmed, but without a functioning vehicle or a cell phone signal, Nicholas Cashoili turned to his ham radio — a device that needs only a radio frequency to make contact with other radios. read more Elphinstone Chronicles: The vegetarian friendly kind of ham Elphinstone [British Columbia] — Our friend and Elphinstone Chronicles founder, Gayle Neilson, has very interesting people in her Area E neighbourhood. Living across the street from her is the president of the Sunshine Coast Amateur Radio Club Society (SCARCS), which sounds like the most illustrious club to hit the Elphinstone region ever. The society, which has been operating nearly four decades, is very supportive and helpful in getting people into the hobby. They are always open to new members, or the “ham-radio-curious.” My first astute questions were along the lines of why do they call it ham radio? And is there a “beyond” version? I had grave concerns as a vegetarian. It turns out there is an entire Wikipedia page dedicated to the intricacies of this query which I was obviously not the first to ask. Suffice to say, it is slang for an amateur radio operator. read more Fort Herkimer Amateur Radio Association Assists NYS State Police Troop T (Thruway) in Halloween Pumpkin Patrol Little Falls [NY] — New York State Police and citizen volunteers have completed the 38th annual Pumpkin Patrol watch. This is a two-day volunteer crime prevention program involving New York State Amateur Radio Associations working with Law Enforcement for safe Halloween eves. The objective is to ward off Halloween pranks and protect motorists traveling the Thruway. Patrols consist of NYS State Police Troop T Troopers and local Amateur Radio Operators from area ham radio clubs. On October 30th and 31st, from 6 pm to 11 pm, volunteers monitor NYS Thruway overpasses and report any unusual activity to law enforcement. State Police say 15 organizations from 19 counties have volunteered to participate this year statewide. read more The post Amateur radio in the news: Radio rescue highlights hobby, vegetarian-friendly hams, radio amateurs on pumpkin patrol appeared first on KB6NUs Ham Radio Blog.

[Category: Clubs, Emergency Communications / Public Service, British Columbia, New York, Wyoming]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/14/22 9:02am
On Saturday, I taught a one-day Tech class on the HamRadio 2.0 YouTube channel. Im not sure how many attended exactly because the class was being held in a Zoom webinar and being live-streamed on YouTube. There were 30 participants in the Zoom webinar, but Im not sure how many were watching on YouTube. I do know that several people passed the test already. Jason, KC5HWB, arranged for an online VE test session Saturday evening, and several of the students who took the test and passed sent me nice emails. This was the first time that Id done a complete one-day Tech class online. It made for a long day, but I think it worked out pretty well. Take a look and let me know what you think. And, feel free to share the link to this video with those who are thinking of getting a license, but perhaps are finding it difficult to find a class or for whatever reason are unable to attend one. The post One-day Tech class now on YouTube appeared first on KB6NUs Ham Radio Blog.

[Category: Classes/Testing/Licensing, On the Internet, Ham Radio 2.0, one-day tech class]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/12/22 6:57am
You dont have to know Maxwells Equations to be a ham, but theyre kind of cool. This is a talk given by Michelle, W5NYV, at the latest QSO Today Virtual Ham Expo. Bob, K0NR recommended this video about how transistors work. Its not very deep, but if you have no clue about transistors, this is a nice introduction to the topic. This is just about all you need to know about transistors to pass the Technician Class license test. The post Amateur radio videos: Maxwells Equations, AI and amateur radio, how transistors work appeared first on KB6NUs Ham Radio Blog.

[Category: Electronics Theory, artificial intelligence, Maxwell's equations, transistors]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/10/22 7:18am
In a recent thread on the CWops mailing list, a fellow wrote: You wonder why more and more guys are getting on FTx mode? How about this? MADAGASCAR, 5R. Eiki, JH8JWF is QRV as 5R8AS from Ivato, Talatamaty, IOTA AF-013, until November 6. Activity is on 80 to 6 meters using FT8. QSL via LoTW. GHANA, 9G. Dave, AB0GC is QRV as 9G1SD from the Wenchi, Brong Region. Activity is on 17 to 6 meters using FT8 and FT4 at various times during the day. QSL direct to home call. BANABA ISLAND, T3. Members of the Rebel DX Group are QRV as T33T until November 15. Activity is on 160 to 6 meters using FT8 in DXpedition mode. QSL via LoTW. INDONESIA, YB. Amir, YB9IPY/p is QRV from the Rajaampat Islands, IOTA OC-239, until November 8. Activity is on the HF bands using only FT8. QSL direct to IK2DUW. Im not on FT modes, but if you like chasing DX and new band/countries, or ARRL DX Challenge, or even tracking weird and unexpected LP propagation on a dead band, stuff like this makes it start to become a rational decision. Sigh. What followed was a wide-ranging discussion of CW vs. the digital modes. Some thought that FT4 and FT8 were cheapening the value of DXCC and other DX awards (as if they had any real value to begin with). Others just brushed it off saying, There are a steadily increasing number of ways to enjoy this hobby.  Pick your favorites for whatever reasons excite you. Im more in the second camp than the first. If people get their kicks from operating FT8, then more power to them. Its funny when you think about it. We CW operators often say that one reason for operating CW is that its easier to work DX on CW than phone. So, I guess its a bit hypocritical to bad mouth FT8 just because FT8 makes it even easier to work DX. Im not a big DXer, so its not a big deal if I dont work Banaba Island this time around. And, overall, I think anything that gets people on the air is a good thing. Even so, not even having the chance to work these DXpeditions unless I fire up the FT8 software is a little disappointing. What do you think? The post Is this the beginning of the end for CW DXing? appeared first on KB6NUs Ham Radio Blog.

[Category: CW, DX, FT8]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/7/22 10:18am
In this episode, I  join Martin Butler M1MRB, Caryn Eve Murray KD2GUT, Edmund Spicer M0MNG and Ed Durrant DD5LP to discuss the latest Amateur / Ham Radio news, including: Amateur Radio Club Members Assist Law Enforcement RSGB Construction Competition Ham Radio’s News Information Channels Shrink By Two Got a Problem? Ask a Ham! If China declares war, These Ham Radio Enthusiasts Could be Crucial This episodes feature is Part two of the RSGB National Hamfest Round-up. The post ICQ Podcast Episode 389: Hams assist law enforcement, ask a ham for EMI/RFI help, Taiwanese hams prepare for war appeared first on KB6NUs Ham Radio Blog.

[Category: Building/Homebrew, EMI/RFI, Podcasts, Taiwan]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/6/22 9:34am
One of the operating activities that I participate in is the CWops QTX competition. Technically, QTX is the Q signal for I will keep my station open for further communication with you until further notice (or until ____ hours), but in amateur radio we use QTX to mean a long contact or ragchew. To qualify as a QTX QSO in this activity, the contact has to last for at least 20 minutes. Every month, a bunch of us send our results in, and they get posted in the CWops newsletter. One of my goals is to finish in the top ten, and I almost always manage that. Another goal is to make at least one QTX QSO every day. So far, I have only managed to this once. I recently submitted my score for October and noted, Fell just short again of my goal of one per day. I guess thats just going to be how it goes. :) To which, Bruce, K8UDH, who compiles the reports, replied, Yes, you’re just a little bit short of your goal, but you probably wouldnt be where you are today without your solid goal. I think hes got a point there.Setting goals for oneself, even for something as silly as making ragchew QSOs will help you achieve more. You may not always reach your goal, but you will achieve more than if you dont have one. Next, Im going to have to set up a goal to complete some of the homebrew projects that I have littering my workbench. Maybe Ill finally get one or two built. Im thinking that completing one every two or three months is reasonable. What do you think? DX on 30m If youve been on the bands lately, youll know that propagation is indeed getting better. This is nice, because while Im not a big DXer, I do like to add countries once in a while. In the past  month, Ive worked a couple of new countries, including the D60AE DXpedition to Comoros and the 5V7RU DXpedition to Togo. I was able to log D60AE just before they ended operations. By that time, the pileups on 30m had slowed down, making it easier for me to break the pileup. At first, I wasnt sure that they had my call sign correct. Every time they sent my call, their signal seemed to fade a bit, and I never heard them send my call completely. I checked the online log the day after I worked them, though, and sure enough, my call was correct there. Working 5V7RU the situation was a bit different. I had completed a QSO on 10117 kHz, and was just puttering around, with the receiver still tuned to that frequency. About 15 minutes later, 5V7RU comes on and starts calling CQ. I heard them right away and was able to work them just before the pileup descended on the frequency. That was pretty cool. The post Operating Notes: Setting goals, DX on 30m appeared first on KB6NUs Ham Radio Blog.

[Category: CW, DX, Operating]

[*] [+] [-] [x] [A+] [a-]  
[l] at 11/4/22 12:54pm
The most important algorithm of all time The Fast Fourier Transform (FFT) is arguably the most important algorithm of all time. Whether it is or not, its certainly the most-used algorithm. I found it interesting that one of the first applications of the FFT wasnt in communications at all, but rather for detecting underground nuclear explosions. Worldwide ham radio operators (2000-2022) A visual depiction of how the number of amateur radio operators have changed since 2000. Whats amazing to me is how the number of radio amateurs has declined in Japan. Watch it on YouTube to see how the author came up with the numbers. A QRP one-tube CW transmitter (with an Arduino-based oscillator) One of the attractions of amateur radio—to some at least—is that it includes both the most modern technology (FFTs) as well as those that have been around for 100 years or more (vacuum tubes). Heres an example of the latter. The post Amateur radio videos: Fast Fourier Transforms, worldwide ham populations, homebrew one-tube CW transmitter appeared first on KB6NUs Ham Radio Blog.

[Category: Building/Homebrew, Everything Else, History, The Service]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/30/22 8:54am
I recently got an email from a fellow who writes: We are new to Ham radio and before we spend money on a license we would like to know how to set up our radios so we can at least communicate with each other in case of an Emergency. I know all about the license part so I dont need a speech just some information. I replied: Without knowing what kind of radio that you have, the best thing for you to do is to read the operator’s manual. By studying for and getting a license, you’ll learn more about how to do this. To which, he responded: I have. It is very vague. (I presume hes talking about the operators manual.) I have two Anytone 778s. Both are mobile radios. Like I said I have no desire to spend money on a license if Im only using it for a SHTF kinda of day. All I want to do is be able to reach someone in an emergency. Everyone is all about a license. I could care less if the FCC is listening, and besides i really think that they have better things to do with their time then chase me fo talking on a radio. I replied again: You’re right. In an extreme situation, it’s unlikely that the FCC is going to be listening for unlicensed operators, but there are advantages to being licensed: t will help you learn how to program and use your radios properly. By using your radios regularly, you’ll learn something about radio technology, which can definitely help you in an emergency situation. For example, you’ll learn about what kind of antenna to use and how best to deploy it. By using your radios regularly, you’ll ensure that they will operate when there is an emergency situation. If they sit on the shelf for a year or two or three, there’s no guarantee that they will work correctly when you do need them. I’m sure I could think up several more good reasons for getting a license, but these three are what popped into my head at at the time. Perhaps those of you who are more involved with emergency communications could provide a few more reasons for this fellow to get his license. The post Should this guy get a license? appeared first on KB6NUs Ham Radio Blog.

[Category: Emergency Communications / Public Service]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/27/22 1:44pm
If China declares war, these ham radio enthusiasts could be crucial Photo: Annabelle Chih / For The Times TAIPEI, Taiwan — On Tuesday nights, BX2AN sits near the Xindian River, motionless but for his thumb and middle finger, rhythmically tapping against two small metal paddles. They emit a sound each time his hand makes contact — from the right, a dit, or dot; from the left, a dah, or dash, the building blocks of the Morse code alphabet. “Is anyone there?” he taps. The replies come back in fits and starts: from Japan, then Greece, then Bulgaria. Each time, BX2AN, as he is known on the radio waves, jots down a series of numbers and letters: call signs, names, dates, locations. Then he adjusts a black round knob on his transceiver box, its screens glowing yellow in the dark. read more Ham radio operators provide support for Apple Scrapple event Local volunteer amateur radio operators provided communications support to the Sussex County Emergency Operations Center Mobile Command Unit in Bridgeville for the annual Apple Scrapple Festival Oct. 15. Wearing yellow emergency vests, the operators, aka hams, joined the crowds of attendees to provide general information, give directions, and be the eyes and ears on the street for the county’s mobile command unit. The teams were also able to provide specific festival information, as well as assisting family members to find each other. For an event as big as Apple Scrapple, these feet on the street allow first responders and event staff to concentrate on other tasks. Using their radios, multiple volunteers can exchange information and quickly coordinate an incident response. read more Upshur emergency management department now seeking volunteers who want to train in disaster response skills BUCKHANNON (Texas) – When catastrophe strikes – think flash flooding or a devastating fire on Main Street – communities across the U.S., and especially rural communities like Upshur County, count on local volunteers to step in until enough professional first responders arrive. To that end, the Upshur County Department of Homeland Security and Emergency Management is working to revive the county’s Community Emergency Response Team, a nationally supported program that teaches local volunteers how to prepare themselves, their families and neighbors for hazards that could impact their community. Right now, Upshur DHSEM Director Steve Wykoff and Upshur DHSEM Deputy Director Derek Long are recruiting residents who want to be trained in disaster preparedness skills so they can respond when needed. So, whether you’ve heard of CERT before or not, here’s five things to know about what it is and how it works. read more The post Amateur radio in the news: Taiwan prepares for Chinese invasion, DE hams provide public service comms, looking for emcomm volunteers in TX appeared first on KB6NUs Ham Radio Blog.

[Category: Emergency Communications / Public Service, Delaware, Taiwan, Texas]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/19/22 8:12am
Ten years ago, I developed a leadership seminar for amateur radio club officers.  We held a couple of session here in Michigan, which the participants found to be useful, and I suggested to the ARRL that they offer this—or something similar—to club leaders across the country. In typical ARRL fashion back then, I never heard back from them. Well, in yesterdays ARRL Club News (October 18, 2022), I found the following item: Call for Instructors ARRL is embarking on a journey of training for club officers and members. The new club development webinar series will include live Q&A, and the live sessions will be available to everyone. The webinars will be recorded and available to ARRL members through the ARRL Learning Center. Were looking for ARRL members to help us produce, create, and deliver the webinars. The purpose of this program is to offer a series of short webinars that offer training for the skills needed to build and run a successful club. Topics will include leadership, activities, finance, and recruiting. Envisioned is a series of 10 or more webinars, all lasting from 20 to 30 minutes. The hope is that club officers and members will view the series as an opportunity to learn from others that have been able to put those skills to use. To do this, we need the help of membership. Were looking for instructors to help with building the training. Were also looking for members that can present in a standard format and have the skills necessary to do the training. If this sounds like something that you are interested in, please contact Mike Walters, W8ZY, at mwalters@arrl.org for further details. We hope to start this series in late January 2023. Its great that the ARRL is starting to work on this, but even better is that theyre asking for volunteers to help. Ive always said that there is a wealth of talent and experience among the ARRL membership, but that most of the staff members were inflicted with not-invented-here syndrome. That is to say that the prevailing opinion always seemed to be that if an idea or program did not originate in Newington, it wasnt worth much. Soliciting volunteers like this  is not something that the ARRL would have done 10 years ago. Its been very satisfying to see the ARRL come around on things that I proposed years ago. Next on my list that Id like to see the ARRL tackle: setting a membership goal of at least 25% of U.S. licensed radio amateurs. The post ARRL to offer training for club officers appeared first on KB6NUs Ham Radio Blog.

[Category: Clubs, leadership, training]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/16/22 8:29am
Here are some more great YouTube videos Ive come across lately. This first one is a pretty good introduction to all the digital modes we, as radio amateurs, can operate. Ive been thinking about putting up a hex beam here for a while. The only reason I havent done it yet is because Im thinking about moving. Have I ever mentioned that Im a Begali fanboy?  The post Amateur radio videos: Intro to digital communications, putting up a hex beam, Begali paddles appeared first on KB6NUs Ham Radio Blog.

[Category: antennas, CW, Digital Communications, Begali, hex beam, paddle]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/12/22 12:47pm
In something that I wrote recently, I referred to 70 cm repeaters, meaning, of course repeaters that operate between 420 MHz and 450 MHz (at least here in the United States). One of the reviewers took me to task for my use of this phrase, writing: Another thing that amateur radio gets wrong is the use of terms like 70 cm. WE old hams know what that means, but there arent any radios that display a frequency in cm, so in my opinion, its best to spell out frequencies and not wavelengths. To rewrite this, Id say, 440 MHz repeaters instead. While I see his point, Im not so sure that hes right about this. Back in the day—and Im talking the 20th century here—we used to call the 70 cm band, the 440 band (at least here in the Midwest). Note that wed say 440 and not 420, because most, if not all, the repeaters were located at the top end of the band. Now, however, I think it’s becoming more common to hear 70 cm instead of 440 MHz. Why call that band 440 MHz when we refer to all that other bands—at least all those lower in frequency—by their wavelengths? What I suggested is that I re-word 70 cm repeaters to read “70 cm-band repeaters” or “repeaters for the 70 cm band.” In his reply to this suggestion he wrote: To each his own, I guess. In my writing, Im trying to make amateur radio seem accessible and inclusive to those who arent currently hams, but might be interested. Im not trying to dumb it down—my intended audience is techies—but I think that one only understands wavelength measurements once youre on the inside of amateur radio. To a non-ham its cryptic to say 70 cm; non-ham wireless experimenters are used to seeing 433 MHz, 900 MHz, so thats why I use frequencies, not wavelengths. I think that perhaps what Ill do is to continue to refer to the band as the 70 cm band when writing for amateurs, but be more specific when I think that non-amateurs will be part of the audience. For example, I might refer to repeaters operating in the 70 cm band (420-450 MHz). What do you think? The post Meters or MHz? appeared first on KB6NUs Ham Radio Blog.

[Category: Everything Else, Writing]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/11/22 8:28pm
In this episode, I joined Martin M1MRB, Caryn Eve Murray KD2GUT, Edmund Spicer M0MNG, Ed Durrant DD5LP and Leslie Butterfield G0CIB to discuss the following: New ‘5-Year Rule’ for Deorbiting Satellites to Address Growing Risk of Orbital Debris University Students Learn about Amateur Radio Satellites 16 New Radio Amateurs in Cyprus Radio Science 2.0: Ham Radio Activities for Kids in Romania ITU Elects Ham from US as New Secretary General Swiss Ban on the Sale of Anytone Transceiver (HT) The episodes feature consists of three mini-reviews of  some new ham hardware. The post ICQ Podcast Episode 387 Three Mini Ham Hardware Reviews appeared first on KB6NUs Ham Radio Blog.

[Category: Podcasts, ICQPodcast]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/9/22 2:40pm
The post Amateur radio videos: Building a fan dipole, testing toroids, end-fed antennas appeared first on KB6NUs Ham Radio Blog.

[Category: antennas, Building/Homebrew, end fed antenna, toroids]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/7/22 8:58pm
APC Back-UPS 600 For several years—actually more than several years—I used an APC BackUPS 600 uninterruptible power supply (UPS) in my home office to keep my electronics up and running in case of a power failure. It saved my bacon several times when the power went out here. There was always one situation that kind of griped me, however. I have a Brother MFC-7360N laser printer/scanner, and whenever I would print a document, the UPS would kick on as if the power had dipped. I emailed Brother about this and they informed me that this is exactly what was probably happening, as they designed the printer to draw so that it would draw a large amount of current so that it would heat up faster. While this was annoying, it wasnt that big a deal, as I dont print documents very often anymore. This spring, however, the situation worsened. Whenever I went to print something, the UPS either didnt kick in fast enough, or couldnt supply enough power, and my computer would actually turn itself off. Not good. I surmised that the battery in the UPS was just not holding a charge like it used to. Since I really needed the UPS to supply more power anyway, I decided to purchase a new UPS instead of just replacing the battery. Liebert PSA-5 UPS What I bought was a Liebert PSA5 1500VA. This unit has more than twice the capacity of the APC UPS (the 600 stands for 600 VA capacity) and did work better than the APC. I didnt experience any weird stuff when the printer started up. Great! I thought. Then, about six weeks ago, the Liebert UPS just turned itself off. EC01 it said on the LCD display. I looked that up in the manual, and it said EC01 indicated a shorted output. I crawled under the desk, disconnected all of the devices plugged into it, and turned it back on. It beeped and displayed EC01 again. Damn, I thought. I couldnt just not work, so I went downstairs to find some power strips. As I was searching for something I could use, it occurred to me that I still had the APC UPS somewhere. The battery was weak, but it would still provide some protection. So, I brought that upstairs along with a six socket power strip. I plugged my Mac, the cable router, and my wifes laptop into three of the four battery-backed outlets, then turned on the UPS. Nothing. Shoot, I thought, the battery must be so gone now that it wont even turn on. So, I plugged everything into the power strip and the four  surge-protected outlets on the APC UPS and got back to work. The next morning, I called Lieberts 800 number. I explained the problem, and after a couple of questions, they said that theyd send me a new unit as quickly as possible. At least that went well. I waited almost two weeks to get it, but its been working fine ever since I installed it. After I unplugged everything from the APC UPS and power strip, I hauled them back downstairs. As I was carrying them, it occurred to me that the APC UPS felt a little light. Then, I remembered that I had taken out the battery to measure it so that I could buy a new one. No wonder the battery-backed outlets didnt work. There was no battery! I ordered a new battery from Amazon, which arrived in a couple of days, installed it, and the APC UPS is as good as new. Im now using it in the shack ahead of the 13.8 VDC power supply and the shack computer. I still have the defective PSA-5, too. Liebert didnt seem to want it back, so its just sitting in a box, under the desk. I may crack it open and see if theres anything obvious thats causing the shorted output.   The post A tale of two interrupted uninterruptible power supplies appeared first on KB6NUs Ham Radio Blog.

[Category: Everything Else, uninterruptible power supply]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/5/22 7:50am
Cover of my latest No Nonsense Technician Class License Study Guide. A little over a week ago, I got the following email: Hi Dan I was updating the link to your Technician study guide, and was VERY disappointed to see that youve changed the human image on the front cover from the gender, race and age neutral red blob to a white guy. I am so sad about this, you have no idea. Were working hard over here to expand the demographics of Amateur Radio and one of the things I most LOVED about using your manual with our courses was the non-specific image of the radio operator. Any way I can convince you to change it back? Actually NO image at all is better than this new one. We have around 100 demographically mixed new students who are queued up to attend our next wave of courses that will be starting in about 3 weeks. PLEASE consider a quick change. At least just for the free PDF. I really dont want to have to apologize to all of my students on the first day of every class about why Ham Radio materials continue to be so blatantly biased. The cover from my 2018 study guide. I was seriously taken aback by this. My intent was certainly not to be biased. Anyone who knows me that I am maybe the least biased when it comes to helping others get into and enjoy amateur radio. I never did like the red blob and I wanted to put a more human face on amateur radio. I suggested deleting the cover on PDFs that were distributed to the students, but that suggestion was dismissed: I dont distribute the PDFs of your manual, just the link. So my deleting the cover for your product is not what I view as a good fix. I also know that you have long used unbiased covers for your books, so I should not need to provide suggestions. My correspondent then provided a few links to articles about the need to be inclusive in advertising. She continued: I feel very dismayed that you, of all people a highly recognized online influencer in amateur radio, with a leadership role in AR|DC believe that the continuation of the perception that a white male on the cover of your latest technician training manual IS a good image for amateur radio. Gender and race bias in any product, is NEVER appropriate, especially in U.S. ham radio and STEM, where people who are not white males often lack confidence and feel unwelcome. Speaking from personal experience over 4 decades as a licensed Ham, as well as in my professional career as an Engineer and Computer Scientist, I know very well that these perceptions are not imagined. Rather, it is because in some of these settings we are actually NOT welcome, can be treated as inferior, verbally chided, and even literally pushed aside (such as by not being given mic time or mentoring in club shacks, or relegated to non-technical roles in Ham clubs). Cover from my 2014 Tech study guide. We swapped a few more emails about what I could do. She suggested that I use pictures of amateur radio equipment instead of a person, but Im bored with pictures of equipment. As shown at right, the 2014 Tech study guide actually did have an image of an HT. I noted that the latest version of the ARRL license manual features a young woman on the cover, but she replied, Id say no on the female (as ARRL has, after many decades finally done), because that raises other issues what race should the female be? After all this, Im still unsure about what I should do next. Im definitely not going back to the red blob. Its just too impersonal, and even though its gender-neutral, not a good image for amateur radio. On the other hand, I certainly dont want this cover to dissuade anyone from taking up ham radio. So the question is is there a way to put a human face on amateur radio and not be biased? Im open to suggestions. The post Do I need a new cover? appeared first on KB6NUs Ham Radio Blog.

[Category: The Service, bias]

[*] [+] [-] [x] [A+] [a-]  
[l] at 10/3/22 7:26am
Here are some articles from recent issues of electronics trade magazines that you might find interesting and usefulDan Back to Basics: Impedance Matching The term “impedance matching” is rather straightforward. It’s simply defined as the process of making one impedance look like another. Frequently, it becomes necessary to match a load impedance to the source or internal impedance of a driving source. A wide variety of components and circuits can be used for impedance matching. This series summarizes the most common impedance-matching techniques. read more Digital Electronics Course — Part 1: Binary Logic and Signals Today, we are surrounded by digital electronics. Devices that work with analog electronics are very rare. Computers, telephones, cameras, CD players, printers, radios, and TVs all operate with digital technology. We hear about digital electronics every day, but few people probably really know its meaning and function. There are several definitions to describe it. Digital electronics deals with systems for processing and handling numerical data. The term is derived from the word “digit,” which in turn is derived from the Latin word “digitum” (finger). To fully understand the concept, it is necessary to be perfectly clear about the difference between the words “analog” and “digital,” read more This article might help you learn how to use that NanoVNA you haveDan RF Demystified: The Different Types of Scattering Parameters Scattering parameters (S-parameters), which describe the fundamental characteristics of RF networks, come in many flavors, including small signal, large signal, pulsed, cold, and mixed mode. They quantify how RF energy propagates through a system and thus contain information about its fundamental characteristics.Using S-parameters, we can represent even the most complex RF device as a simple N-port network. Figure 1 shows an example of a two-port unbalanced network, which can be used to represent many standard RF components such as RF amplifiers, filters, or attenuators, to name a few. read more The post From the trade magazines: Impedance matching basics, digital electronics course, S-parameters appeared first on KB6NUs Ham Radio Blog.

[Category: Electronics Theory, digital logic, impedance matching, s parameters]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/26/22 3:18pm
West Allis Amateur Radio Club aims to generate interest in ham radio NEW BERLIN, Wis. — Although long distance communication is easier than ever with the internet and cellphones, the West Allis Amateur Radio Club is showing that ham radio is not only still going strong but also evolving. Every week, the club sponsors a Park Ops meet up at a Milwaukee-area park to generate interest in the popular hobby. Also known as amateur radio, ham radio involves the use of radio frequency for exchanges of messages. read more HAM Radio Club provides behind the scenes weather, safety reporting ORION TWP., MI — While some people may consider it to be a lost art, the Orion Township HAM Radio Club has found a way to breathe new life into a hobby most folks had no idea still existed.The group of 11 meets at the Orion Center at 6 p.m. on Monday and Thursday nights and, behind the scenes, provides several public services to the Orion area, but anyone in the north Oakland County area is welcome to join. Thursday nights are mostly dedicated to the Amateur Radio Public Service Corps (ARPSC), which is run out of Pontiac and coordinates tornado siren checks, event volunteers, weather and the hospital net. When extreme weather is anticipated, members of the club will use their personal radios to call into the ARPSC to give reports on weather from their location. This allows for more accurate, effective reporting. read more Lakeway Amateur Radio Club recognized Hamblen County Mayor Bill Brittain and Morristown City Mayor Gary Chesney read a proclamation honoring amateur radio operators, among those recognized were the members from the Lakeway Amateur Radio Club. Brittain read the proclamation from the Tennessee State Senate and House of Representatives at the Hamblen County Courthouse Wednesday afternoon, as part of an event honoring H.A.M. Radio Operators read more The post Amateur radio in the news: Club aims to generate interest in ham radio, appeared first on KB6NUs Ham Radio Blog.

[Category: Amateur Radio in the News]

[*] [+] [-] [x] [A+] [a-]  
[l] at 9/23/22 4:28pm
One of the problems with the Technician Class amateur radio license exam is that so many questions can be answered correctly only by memorizing the answers. If any of these questions came up in real life, one would consult a book for the correct equation or information. That being the case, I’m offering this “cheat sheet” that someone could use while taking practice tests to answer these questions. Just don’t get too dependent on this cheat sheet, as you won’t be able to use while taking the real test, at least not yet anyway. Download the PDF Did I miss anything? The post Tech Exam Cheat Sheet appeared first on KB6NUs Ham Radio Blog.

[Category: Classes/Testing/Licensing, cheat sheet, Technician Class]

As of 11/29/22 3:56am. Last new 11/27/22 7:43pm.

Next feed in category: AmSat UK