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Sky, space, and surface waves
An interesting and informative course is available from Comet/MetEd titled Radio Wave Propagation. The course web-site: https://www.meted.ucar.edu/training_module.php?id=1394#.Wylt6Rwnb4Y
If you are relatively new to amateur radio do not be concerned with the technical aspect of understanding all of the details and terminology. You may be surprised that many of the graphics and audio explanations that are given will definitely provide you with a greater knowledge of what goes on with the signals radiated to and from your antenna, even without getting wrapped up in the technical terminology. I sincerely believe that you will learn some interesting aspects relating to amateur radio which will give you a better understanding of the why and how radio signals work.
This course is also for the veteran amateur radio operator. There is plenty content that will likely get you thinking and recalling some of the information you may have learned years ago.
There are quizzes during and at the end of course. You can take them but again do not get overly concerned with getting all the correct answers. Then again, you may be surprised at what you have learned! Passing the final quiz will net you a printable certificate of completion.
This course has great graphics with very good explanations, turn your speakers on. Give yourself about 1.5 hours for the course and quizzes. You can’t beat this education, at no charge!
You will need to register to create an account to take any of the MetEd courses. Radio Wave Propagation is only one of many other informative topics, be sure to check the list of available courses.
Layers of the Ionosphere
“The source of this material is the COMET® Website at http://meted.ucar.edu/ of the University Corporation for Atmospheric Research (UCAR), sponsored in part through cooperative agreement(s) with the National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce (DOC). ©1997-2017 University Corporation for Atmospheric Research. All Rights Reserved.” (Posted due to use of the graphics)
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Two high altitude balloons with APRS telemetry reporting transmitters passed just west of DuBois on September 13. These balloons were reporting altitudes of just over 45,000′ and temperatures around 12 degrees F.
I happened to capture a screen shot one of the balloons as it was posted online, via the WA3UFN-1, APRS I-Gate.
This year the QCARC Field Day site will be at the Sandy Valley Community Church, located just off Rte. 950, between Falls Creek and Reynoldsville.
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Hello again
It was a while ago since I wrote anything here, but now I really have something to write about!
As maybe some of you know, I took the step, and bought a new radio, the Yaesu FT-991. It is an all band all mode transceiver incl C4FM, where all the best parts from Yaesu’s more exclusive transceivers come together in a very compact sized box. Already the first day, i was struck by the radios very quite receiver and ease of use, even though it’s the first time I’ve ever used a radio with touch screen. But, if you are familiar with a smartphone or a tablet, then you feel right at home with the FT-991. Last weekend, I got to test it’s phenomenal ability to pick out stations just above the noise, even though I had 59+ signals right beside, and without earphones, it was easy to hear what the weak station said, and, to work him! This time Yaesu really hit the head on the nail! I dare to say, that nobody in this price range come even close to the FT-991! It is a radio that will fit in any Go-Box, since it’s even got a built in tuner as well as a built in audio board for digital traffic.
I will bring the radio to the next meeting, so you all get a chance to play a little with it. I hope we get a weather like we had today, so we can put up some antennas, and make a few contacts!
See you all at the QCARC meeting!
Lars KB3WBT
PS: The Yaesu FT-991 price is now even lower, $958 after mail in rebate at RandL electronics, which is a super deal!
For many hams the go-to 12 VDC connector is the Anderson Powerpole®. I feel the same, this connector is the only one that makes sense for convenience and durability of connection among my own radios and if the need arises other power supplies. This form of 12 VDC power connection really makes the issue of interoperability for a power source a non-issue. The connector is recognized across the Country as THE power connector to use for ARES and other public service applications.
Anyway, where this is leading is the issue with installing the connectors on the wire. It really is not difficult but there is a standard, in order to interface with the rest of the world! Amateur radio has adopted the standard that when viewed from the contact side, the mnemonic for remembering the arrangement for the positive connector is: “Red Right — Tongue Top“.
Of course red is positive while black is negative. Even though there is a standard, I feel it is still a good idea to confirm the connection that your rig may be connected to is verified visually and also electrically using a volt meter or one of the LED connectors that indicate if the connectors are configured to the standard.
The installation of the connector contacts can be problematic if the proper crimp procedure is not used. I’ve used the crimping pliers type crimp tool, until now. I finally invested in a crimp tool made for the Powerpole® connector contacts. I have to say that I should have done it sooner, no exaggeration! There are are several styles of crimpers available with the special dies for the crimp, study their operation and style then decide for yourself which one suites your needs. The version that I settled on has a feature in the tool that helps maintain the alignment of the contact while the crimp in done (see photo). My opinion is that the crimp done with the pictured tool is far superior than the crimping pliers style. Along with the quality of the crimp, there is no distortion to the contact. With no distortion there is no reforming the contact which results in a much easier insertion into the Powerpole® shell and much better contact surface for maximum conductivity.
Lately many of us have heard stations from rather distant areas on the 147.315 repeater. It is interesting to hear those stations that we normally do not hear but often it is just due to a weather phenomenon called and inversion. I expect that some amateurs sit back and wonder just what is this inversion thing that some offer as an explanation for the unusually distant stations heard and some stations that we can even carry on a QSO with. Sometimes the stations seem as though they are just audible for enough time to hear a call sign but other times long enough for a typical QSO. Then there are times that you may not even be able to hear or access your local repeater and again you will hear folks offer the explanation as an inversion as well.
Consider the simplified diagram of an inversion below. Note that typically as you increase elevation the temperature lowers but with an inversion the opposite happens! You can see the yellow area depicting the inversion, which actually ends up acting as a boundary layer that can either attenuate the signal to and from the repeater or at times signal attenuation can occur to the extent of both blocking the repeater from hearing your transmitted signal and from you hearing the repeater’s transmitted signals. This occurrence can lead one to believe the repeater is off the air. I recall years ago there were trips made to the repeater site when we could not use the repeater, only to find the repeater operating. All due to an inversion. Sometimes the inversion layer is well above what the diagram depicts too, leading to other stations that you will be able to talk with that you would not ordinarily be able. There is another term used for this phenomenon which is called ducting that enables more distant than typical communications to occur, especially on VHF as well as UHF.
Inversions, ducting, tropo and what ever other titles the phenomenon of having radio signals reflected and refracted is an interesting and vast topic of which you can read up on. Look for propagation of radio signals either on the Internet or the ARRL Handbook for Radio Communications, what was previously called the Radio Amateur’s Handbook.
As of approximately 2:00 PM, 4/8/2015 the analog only UHF repeater was replaced with a Yaesu System Fusion Analog/Digital repeater. This is the same type repeater as used for the 147.315 repeater.
You can still communicate as you have in the past, you will not have to buy a new radio, your radio will not be obsolete. The main difference is that at various times you may hear a noise similar to buzzing or a static like noise, this is likely a digital conversation. The digital conversation noise can be eliminated by setting up your radio’s receiver with a tone squelch of 173.8 Hz. The digital side of the repeater does not transmit the 173.8 Hz tone, therefore your radio will stay quiet until another analog FM radio transmission is received by the repeater. If you want to use the repeater, just talk as you have in the past. The repeater has the capability to automatically detect what type of signal it is receiving and switch to the proper mode to enable you to talk to anyone whether they have a digital radio or the traditional analog FM. Also if you happen to hear or know there is a digital conversation on the repeater you can join the conversation just as you have in the past. When the repeater “hears” your analog FM signal it will switch to your mode and the folks who are using the digital mode will be switched to your analog FM mode. Everyone on the repeater will be able to talk, all automatically!
If you need help setting up your radio with tone squelch, check with one of the officers in the Club, they will be able to direct you to the right ham to help you.
Hi everybody
Since I was just sitting here, I thought that I could show you all what I found at the ham-fest in Butler last Sunday.
Well, lets go back to the beginning in this story. In 1978, I became interested in ham-radio satellites, so called OSCAR satellites. Way back then, the AMSAT OSCAR 7 was the satellite to work. It had an orbit that made it show up every 90 minutes, and covered Europe, northern Africa, and also the US East Coast. To work US East Coast stations, you had about 5 minutes before it went down under the horizon again, so you had to be quick!
Now to the more technical part, the radio you see here at the right, is an Icom 402, it was the state of the art in late 70’s if you wanted to do some SSB on 70cm. It has 3w out-put, and that is not very much, but then again, your average 2m FM radio had a high-power setting of 10w. I used an Icom 402 on the uplink, 435 Mhz LSB, and then the signal from the satellite came back on 145 Mhz USB. The 402 was hooked up to a 46 element J-beam, and the antenna for down-link was a simple 4 element yagi. Right at the 2m yagi, I had a low-noise preamp, to help my Kenwood TS-700 hear the weak signals coming back from the satellite. I would say, that I worked a few hundred stations via OSCAR satellites.
Now to complete this little story. At the hamfest, I paid $10 for this radio in close to mint condition! Needless to say, it made my day! Of course, there aren’t many 70 cm stations around Clearfield — much less SSB ones — but late last night before I went to bed, I went into my shack, and for some reason I tuned around the band and heard somebody! It was Joe W3BC, and he was operating from W3SO in Altoona, so that was my first QSO on my new “old” rig, Joe also gave me the frequencies for 2m and 6m, since what I stumbled into was the VHF contest, lucky them!
Hope this little essay was worth reading :)
PS: For all you who are interested, there is a 2m version of this radio and a 6m version, Icom 202 and Icom 502, there is also a fm 2m, Icom 215.
Lars
PS2: This is a 70cm Halo antenna I built for the radio, it’s horizontally polarized and it is Omni directional (same radiation all directions)
Update on Halo, just worked W3SO, Altoona, made op laugh! Will listen for other stations also….
Well, here we go again!
Remember a while ago, when I wrote about needing a project in order to stay sane, while my shoulder healed? Well, I sure found one!
If you look at the picture at the right, that’s it!
It’s a fantastic little rig from Kenwood, when they still made simple but very good HF stations – no menus, no electronic band-switch, etc.
The model number is TS-130s, and it covers 80m -10m, including the WARC bands, it’s got 100w output and is a cw/ssb rig only, but hey, its a great rig for ragchewing, field-day, beginners’ rig, or when going camping! :)
When I got it, someone had dropped the top lid while looking inside, resulting in tearing the wire off from internal speaker, but with the help from some junked speakers, that was an easy fix. Then came the question why the RF power came and went. Well, what really was wrong, was a voltage regulator, sitting on the heat sink, and it was supposed to be insulated from ground. As you might already have guessed, it was not really…that is to say, the little washer with a little flange on, that is supposed to keep the screw from touching the regulator, was damaged, so when keying the rig, sometimes it made contact, and sometimes not…. After having found this, it now works just as new!
Speaking of cleaning, now I’m going to tell you what not ever to do!! (AND I MEAN THAT!)
When cleaning knobs, do not EVER try to do that in a sink, without a strainer! Why? I’ll tell you why, if you haven’t felt your heart fly up into your throat, YOU WILL! Also, if you haven’t had to take the drain apart, YOU WILL!
Now, if you have stopped laughing, and stopped saying S****D I***T, I can tell you, I now know how it feels! I was just lucky that the knob wasn’t flushed out. Having put it all together again, I buffed up the scuffed paint on the case. It looks so good, that I don’t want to let it go, but since it’s only a project rig, I must (at least that’s what XYL says…)
A radio in this condition sells really fast, and so did this. Roger KB3ZKJ, is now the happy owner. Congrats Roger!
Your storyteller
Lars KB3WBT
Quad-County members participated in a number of contests over the summer months, with good results! Here are some of the official results:
ARRL June VHF Contest
Current Club President Herb Murray W3TM and Secretary Joe Shupienis W3BC hit the bricks to participate in the Rover-Limited category. Activating 5 grids and handing out 92 QSOs, their final official score was 5,406 points, with contacts being made in 48 grids! It was a lot of fun, and they activated some grids neither had operated from before, notably FN02, EN92 and EN91, along with FN00 and FN01. We are fortunate to live in or near so many “rare” grids, and the 6 meter stations were grateful!
That score was enough to win the WPA Section, and to take second place in the Atlantic Division!
Field Day
Overcoming confusion about our location, we stuck it out and had a great time. Finishing in the top 10 of all stations in the WPA section, we scored 2,550 points and most importantly had 26 participants who helped put our signals on the air for the full duration of the event!
That score allowed us to take First Place honors in our 2A-Commercial category for both the Western Pennsylvania Section and the Atlantic Division. We finished 6th place in our category, Nationwide.
Great work, everybody!
CQ WW DX (SSB)
This is “The Big One” — the 900 pound gorilla of contests. Current Vice-President Peach Caltagarone AB3OG graciously opened up his Hummingbird Speedway facilities to the club, and the 16 members and guests who stopped by to operate and observe. We strung up a number of antennas, including a pair of crossed G5RVs and W3BC’s “Half-Rhombic,” a 300 foot monster pointed at Europe.
Results were very good! We logged 91 counties — that’s almost DXCC in a single weekend! the antennas worked flawlessly, digging out European, African and Asian stations well into the wee hours. Then it was back at it Sunday morning, with all the comforts of home — W3BC brought an HD TV and antenna. We were able to receive 11 HDTV stations, and could keep an eye on the football games as we racked up our own score on the air!
Our goal was to introduce non-contesters to RadioSport, to allow everyone to try their hand in a big contest, and to have fun. We did that and more! We finished 2nd Place in the 3rd call district, 17th place Nationwide, 27th place in North America, and 96th place worldwide. With over 8,000 other stations sending in logs, that is quite an accomplishment!
The CQ WW DX (CW) weekend is coming up, as is the ARRL Sweepstakes (SSB) weekend. Gear up for these and be sure to include “Quad County Amateur Radio Club” as your club to help out our club aggregate score! Whatever you favorite on-air activity, it’s coming to your radio soon!
With the risk, that you might say, I can’t do that, I say YES YOU CAN!
The other day, I was looking around for a cheap and simple antenna for my brother in-law. You see, he was asking me if it’s hard to get a amateur radio license, and if the equipment is expensive, so I told him that he could borrow a radio and coax from me, but, I didn’t have any antenna that he could use.
That’s when I got to think about a neighbor of mine, a few years ago, he asked me if I wanted an old CB antenna that had been laying outside for the last 20-25 years, and at the time, I had what I needed, so I said no thank you, but now it might be a good idea to ask him, and guess what, it was still laying out there, he said, all he used it for was to knock down hornets nests. So I got the “antenna” for free, took it all apart, cleaned it up, and put it together again.
From what I could figure out, it was 11′ tall, and once it did have 3 ground plane-rods. Further more, it also had a coil of some sorts, connecting the center of the PL connector with the 11′ radiator, and since I had no clue of size, or number of turns, I started to look on the net for a similar antenna, but it was still just guesswork. As you can see, on the picture at the right, I used what I had sitting around, so its about 1 1/2 turns. Then of coarse I didn’t know how long the ground-plane-rods originally were, so I came up with a “one of a kind” solution. Since I didn’t have any aluminum pipes that would fit, I went another route, if you look close, I put “inserts” into the 3/4″ holes, then 3 pieces of 6′ fiber-glass rods were inserted, and on the rods, I wound about 7′ 22 gauge insulated copper-wire. The fiber-glass rods can be found at Lowe’s, they are used as “driveway” markers. I used electrical tape, to hold the wires in place, but shrink-tubes would be nicer.
Now too the fun part, would this contraption work?? As I said earlier, this was an old CB antenna once upon a time, but what is it now?? I hooked up my trusty TS-440 sat, it has its own antenna-tuner, so I tuned in 28,500 and hit tune, well it showed SWR about 1-1:3, so I moved down to 28,020 and low and behold, it showed SWR 1-1:2! Well I thought, just because it shows low SWR, it doesn’t have to be a good antenna, so I tuned over the 10m band, and heard a station in El Paso Tx I had worked before, he was about S 5-5, so I called him, and he did answer, and gave me a solid S 5-9!! This told me that it was not just a pile of junk sitting on my back porch, so then I tried to tune it on 12m, and there it showed about SWR 1-1:3, which is not to bad!! This antenna turned out to work all bands, except 17m, and I guess 160m!! Not to bad of a pile of scrap!!
So now, I’m asking all of you, go out and “save” old CB antennas, give them a second chance, and put them to work on our HAM-bands! When you are done, tell us how good it works, and how you managed to save it from the “scrapyard” Good luck, and hope to see your article here soon!
Lars KB3WBT the Antennafarmer
THE QUAD-COUNTY Amateur Radio Club, Inc. proudly presents our 2012 Annual Report, detailing the activities of the past 12 months in this, our 38th year. You may view or download it here:
2012 Annual Report
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