The crew of the space shuttle Challenger honored us by the manner in which they lived their lives. We will never forget them, nor the last time we saw them, this morning, as they prepared for their journey and waved goodbye and "slipped the surly bonds of earth" to "touch the face of God."
A weblog by Greg Williams, K4HSM discussing mostly amateur radio and FCC issues.
Friday, January 28, 2011
25 years after Challenger
Tuesday, January 25, 2011
RS1S heads to the ISS
Saturday, January 22, 2011
Cold fusion near reality?
Like most the rest of the world, I call bullshit, and I know jack about physics. The paper they submitted on this reactor has been rejected by their peers, citing lack of proper theory on how the reaction works, but it was published in the Journal of Nuclear Physics. Never heard of it? That's because the scientists themselves fund and operate it!
(PhysOrg.com) -- Few areas of science are more controversial than cold fusion, the hypothetical near-room-temperature reaction in which two smaller nuclei join together to form a single larger nucleus while releasing large amounts of energy. In the 1980s, Stanley Pons and Martin Fleishmann claimed to have demonstrated cold fusion - which could potentially provide the world with a cheap, clean energy source - but their experiment could not be reproduced. Since then, all other claims of cold fusion have been illegitimate, and studies have shown that cold fusion is theoretically implausible, causing mainstream science to become highly speculative of the field in general.
Despite the intense skepticism, a small community of scientists is still investigating near-room-temperature fusion reactions. The latest news occurred last week, when Italian scientists Andrea Rossi and Sergio Focardi of the University of Bologna announced that they developed a cold fusion device capable of producing 12,400 W of heat power with an input of just 400 W. Last Friday, the scientists held a private invitation press conference in Bologna, attended by about 50 people, where they demonstrated what they claim is a nickel-hydrogen fusion reactor. Further, the scientists say that the reactor is well beyond the research phase; they plan to start shipping commercial devices within the next three months and start mass production by the end of 2011.
They have applied for a patent, but it has been partially rejected, citing lack of evidence since it apparently is designed to defy the general laws of physics. I don't see why. After all, the Fushigi defies the laws of physics and they got a patent...
The YouTube video (I'll understand if you don't watch the whole 41 minutes, especially if you don't understand Italian) is vague at best on how it works. How appropriate it was in Bologna...
So there you have it, a reactor you can't see, no details on how it specifically works, a partially rejected patent for how the reactor is supposed to work, and the only "journal" to publish their findings is the one they own! So yeah, perhaps I'm a tad skeptical.
Maybe Wayne Green was right after all...hell, he's probably got his hand in this snake oil pitch...
Thursday, January 20, 2011
NanoSail-D comes alive
On Wednesday, Jan. 19 at 11:30 a.m. EST, engineers at Marshall Space Flight Center in Huntsville, Ala., confirmed that the NanoSail-D nanosatellite ejected from Fast Affordable Scientific and Technology Satellite, FASTSAT.More at the NASA web site or click here.
The ejection event occurred spontaneously and was identified this morning when engineers at the center analyzed onboard FASTSAT telemetry. The ejection of NanoSail-D also has been confirmed by ground-based satellite tracking assets.
Amateur ham operators are asked to listen for the signal to verify NanoSail-D is operating. This information should be sent to the NanoSail-D dashboard at: http://nanosaild.engr.scu.edu/dashboard.htm. The NanoSail-D beacon signal can be found at 437.270 MHz.
Sunday, January 16, 2011
FUNcube dongle making (radio) waves
Tuesday, January 11, 2011
Wouxun KG-UV2D 2m/220 HT review
The KG-UV2D comes in 3 different versions, all using the same model number. On the 2 meter side, they all go from 136 MHz to 170 MHz. For the other band, there are three different frequency ranges. The one I have goes from 216-280 MHz covering the 1.25 (often referred to as "220") meter band. The others operate on the 70cm (often referred to as "440") band in 2 different ranges, one from 350-470 MHz, the other from 420-520 MHz. This review should cover most of what the 2m/440 radios have to offer as well concerning the functions of the radio.
Back to Basics!
First off, the relative simplicity of the radio is probably what will attract many hams (once they go past the super low price). Remember the Radio Shack HTX-202? That was a simple radio! Easy to use, clean keypad, not a lot of bells & whistles that some of today's HT's are overloaded with. It was a great first radio for may hams like myself, cutting their teeth in the post-apocalyptic no-code fallout back in the early 90's.
Don't get me wrong, it doesn't hurt to have too many gadgets on a radio to tinker with, but mess with the wrong setting, and you might have to do a hard reset of everything and start all over...
Wouxun was smart to not throw too much into these little radios. Put the essentials in (CTCSS/DCS tones, DTMF, Time-out timer, VOX) and throw in a few extras just to keep it interesting (FM radio, LED light, stopwatch, and alphanumeric memories).
RTFM (if you can)
One thing will be noticeable when you peruse the box and that is the owner's manual is not exactly, shall we say, proper use of the Queen's English...in fact, the "Engrish" is quite choppy at times. For example, the TOT function, what we call the "Time Out Timer", they dub it as the "Transmit Over Timer". There's quite a few others, but one thing I want to encourage is that, despite the rough translations, do not throw the manual away! It helped me figure out a few things I was doing wrong with the radio before getting on here shouting "this thing sucks" or something else...
I've talked with a few who went to the hamfest and got the radios (the 2/440 variety mainly) and a few were less than enthused with the radio. My first question to them was "did you read the manual?" and when they got done laughing, I reiterated "Seriously, read it!"
If you can overlook the grade-school-level translations of the Owner's Manual, reading the manual is not a large hurdle and you can get a better feel for this radio by reading it front-to-back. Right out of the box, you can figure out much of the functions with little confusion, but to get the full range of features, the manual is a must.
What happens in memory stays in memory
In one instance, I couldn't choose between high and low power via the keypad menu (more on that below). So if I wanted to shift from high to low, or vice versa, if I went through the menu options, and chose one or the other, the radio would beep three times, then reset back to the power setting it was on. As it turns out, I had to go to Menu 21 (the so-called "working mode") and set it to "FREQ" (a.k.a. VFO) before it would accept a change in power settings. If you are in the mode for the memories (CHFREQ, CH, or NAME) the power setting will not change. Whatever's plugged into the memory stays there.
Get your FREQ on
In "FREQ" mode you can direct-dial the frequency you want to listen to. You can scan to locate active frequencies if you are traveling. One of the things that is almost a must will be the need for the programming cable to quickly plug in frequencies that you plan to use. The cost will be around $20 give or take. I picked one up with the radio at the hamfest. You can program the radio manually, but the cable makes it easier by far.
While at the hamfest, I got a ham to go ahead and program my radio with whatever frequencies he had defaulted on his saved file. The software was easy to install (it runs off the executable, so no "install" necessary, just make sure you use the correct software for your operating system) and programming was not that complicated. It did not automatically shift the repeater inputs on the "TX Frequency[MHz]" column, so a knowledge of the repeater inputs (if applicable) is required.
Also note, if you program a frequency outside the transmitting range (such as NOAA weather radio on 162 MHz) leave the "TX Frequency[MHz]" column blank, otherwise you will get an error when trying to write to the radio. The error "Channel Message ## Out of range" appears, the "##" is the line number indicating which memory channel contains the invalid frequency.
The software also lets you program the TOT, frequency shift and offsets, the message you want to see when the radio is powered on, and several other features.
Selecting the COM port should be easy. On my computer, "COM3" was the only COM port available to choose. If your computer asks for more than one port, select the first one, and if the radio does not write, simply choose the "Communications Port" option and choose another COM port, then repeat until the radio upload commences. A progress bar across the bottom will move from left to right indication information is being written to the radio, and an LED light will blink on the radio.
I must say the light weight of the radio out of the box is nice. At just over 8 ounces you can almost forget you have it in your hand while walking.
I did have low audio on one repeater on 220MHz, but I determined it to be my location in the house, because when I moved to a different area (outside the house) my audio significantly increased.
I recorded myself using a local a couple of local repeaters here in Knoxville, one of which has 2 meters and 220 Mhz linked together, the other was a separate 2m repeater. The recording (which can be downloaded here, 39 seconds, 116kB MP3 file) is me first testing on the 2 meter repeater, then the 220 machine. I recorded off another radio plugged into the computer, so you will hear a buzzing noise which is NOT from my transmission, but from the radio with the carrier causing the noise. My 2m audio seems somewhat muffled on 2 meters as opposed to 220, which is why I tried it out on two different 2 meter machines.
I was told by a local ham about a mod on YouTube to increase the overall audio. I may give it a whirl soon with an update.
Voice prompts are a bonus as well. I like the feature of the voice telling me the battery voltage is low. It can also be fun to put it in Chinese to see what the different functions and channel numbers sound like.
The use of DCS and CTCSS is a good feature to have. Although I personally have not used DCS, some repeaters are employing this encode/decode method.
The dual receive on the same band is very helpful. You can monitor two 2m frequencies, two 220MHz frequencies, or one of each, or turn off the dual-receive and just monitor/use one channel. The FM radio feature also allows you to monitor your favorite repeater while listening to the local radio station of choice. Once the repeater keys up, it mutes the FM radio until the traffic has concluded.
The ability to store the FM broadcast radio frequencies into separate memory banks is also a bonus. I spent a majority of time listening to local radio stations while writing this article.
I've also programmed NOAA Weather radio into the memory so that I can take the HT with me to work and listen in if the weather gets bad.
Just a personal preference for me, but I like a knob for adjusting the squelch. Having the radio determine the squelch via a menu setting can often lead to the radio becoming "deaf" when in the fringe areas of a repeater, or when trying to work a station on simplex. Perhaps an outside knob shielding the volume/power knob would be nice in a later version. You can temporarily kill the squelch by pressing and holding side key 2 (the lower button) but for me, I like to be able to use a physical knob to control the sensitivity of the receiver.
Next, the options for choosing high/low power, reverse (input), and repeater shift are options I would have preferred to be on the keypad or the side buttons. The menu process can be complicated just to change power level or choose a repeater shift. The lower side button (side key 2) only has two options, one for the monitoring (dropping squelch) of a frequency, or the built-in flashlight.
Side key 1 has four options to select from when programming the radio (FM radio, SOS help, scan, or lamp), so perhaps the side key 2 menu in a later model should be programmed to have the option of high/low power, reverse (input), and repeater shift. Better yet, I've always been keen on having the power button be it's own button, or a push-button switch like on the HTX-202's case. The important features (power, reverse, and repeater shift) should be a one-button function, or two steps using the "MENU" button first.
The VFO knob across the top got sticky on part of the turn when spinning it. It starts smooth (notching as you turn) and then it becomes increasingly harder to turn, as if it were tightening against something. Then as you continue to turn, the friction will ease up. I got some info (thanks, Rusty!) regarding the sticking tuning knob and was told that the plastic in the knob's base may have residue that makes turning the knob inconsistent with regards to the friction. I'm hesitant to crack the radio open right after I get it (and void that warranty!) so for now I'll live with it.
The stickers that ID the antennas (one for 216-239 MHz for the ham bands, the other antenna for 240-280MHz which is allocated for mobile, mobile satellite and fixed) are not held on very well. I simply took some scotch tape, cut it to the necessary width and length, and wrapped it around the labels to help keep them in place. See image to the left to see the scotch tape on the antenna's label.
Also, the "Wouxun" label on the front of the radio kept trying to peel off. A tiny swipe of super glue has resolved that problem.
The one thing I'm stumped on is why the need for a "Roger beep", and more importantly, why put it on the keypad and not something more useful such as repeater shift, MEM/VFO, or high/low power? Unless roger beeps are big in China, it's not useful here.
The owner's manual also needs to be "translated". After all we get these radios from a US distributor, so perhaps one should take the time to go through and clean it up?
The KG-UV2D also features an "SOS" transmit for use in an emergency where it will sound an alarm for about 10 seconds and repeat this alarm approximately every 5 minutes. The SOS feature might be useful for foxhunting.
Here is a demo of the SOS feature I recorded:
It's best to use a programming cable when entering the memories you want for the radio. Using the keypad can take hours as opposed to just a few moments of programming the software, and just a few seconds of upload time to the radio.
The audio on the 2m side seems to need a tad more improvement, but, as shown by the audio recording, I was perfectly readable. Still, better audio quality makes for a better overall experience with any radio.
The Bottom Line
I do like this radio. On a scale of 1 to 10, I will give this radio somewhere between a 7 or 8. You will get your money's worth and then some with this radio. You can't beat the price of this radio, that's for sure! It's lightweight design will make it nice to carry around at a hamfest. When compared to other HT's, it's got enough features to compete, yet at the same time has a level of simplicity that makes it attractive to hams who might be intimidated by those HTs that have everything but the kitchen sink tossed in to the radio. It's not perfect, but then again, is there such as thing as a perfect radio? Some of the features a ham like myself would use more often should be easier to access, but once you get used to the radio, it should not be an obstacle. If you are looking for a good quality radio that will get you on the 1.25 meter band, this will suit your needs perfectly. If 220 is not active in your area, go with the 2m/440 version.
Wouxun is getting noticed with these radios, judging by the interest at the hamfest I attended. Perhaps this will open the market up for more 220 radios by the heavyweights like ICOM, Yaesu/Vertex and Kenwood, whose 220 product lines are all rather thin or even non-existent. It might get the competition to lower their prices on their current models (and/or future ones) in order to compete, not just the 220 market, but the 440 MHz dual-band radios as well. There are things that could be better on the radio overall, but this is certainly not a "knockoff" by any stretch, and does the job for those who may want a cost-effective means of getting on 220 or 440.
Wednesday, January 5, 2011
Wouxun dual-band mobile closer to reality
There's no ETA as to when it will be available or for how much, but if the price is as low as the HTs are for the dual-band radios they offer, I think it will be quite an interesting product.
You can put in for a reservation to have the chance to get in on the new radios once they are available, no obligation to buy once the price has been announced in case you don't like the price.
Monday, January 3, 2011
2010 Resolutions: The final tally!
Here's the scorecard:
- I resolve to get Lauren an HT - Check - I bought a Yaesu FT-50R from a friend of mine for her about 3 months ago. That is one complicating radio! I may have to give her my Wouxun in order for her to use it without her head exploding.
- I resolve that Amber will at least study to get her license, with Jes, Lauren and I helping. Hopefully it's before the Question Pool change on July 1. - Fail - As much as we tried to get Amber involved, time was not on our side, and the Question pool change back in July made the book I got for Lauren officially null and void. But we're not pressuring her to get her license.
- I resolve to re-install a mobile in the minivan. - Moot - Our minivan's transmission died late in the summer and forced us to get a new vehicle, and Jes got an 09 Pontiac Vibe. I'll work on getting a mobile installed but it's a smaller vehicle and we'd need a small radio.
- I resolve to talk with Lauren on the radio at least once/week on the way home from work. - Fail - Quite simply, a lot of things just didn't go her way or mine. I shoulder the blame for this, but sometimes getting her to talk on the radio is a chore in itself.
- I resolve that I'll get Lauren and Jes on 10 meters (if the band will ever open up!). - Fail - 10 meters is just now starting to warm up, and so hopefully this will come to fruition in 2011.
- I resolve to get a dipole antenna and string it up and get back on 40/80 meters. - Check - It needs a little work, but I am back on the low bands.
- I resolve to contact at least 20 countries on HF. - Fail - Not much time spent on the low bands, but I did notch a couple of countries.
And about losing 30 pounds...don't ask...
Happy New Year, everyone!
Sunday, January 2, 2011
My new Wouxun KG-UV2D
I started 2011 off on the right foot by attending the Morristown Hamfest, which was held on New Year's Day. It's been a long time since I attended this hamfest, probably 10 years since my last visit there, I can't remember.
The building was actually an arena/expo center, where monster truck rallies and an upcoming demolition derby are taking place. It had seating for approximately 3000 people and looked quite endearing to a possible arena football team (of course I looked at ways to put a slab of ice down and house a hockey team!). The concourse area above the seats was where the vendor tables were. There wasn't any tailgating due to thunderstorms running through the area all morning. Had the weather been perfect like the day before (calm winds, warmer temps, sunny skies) there would probably have been a larger crowd in attendance. As it was, there was still a pretty sizable turnout.
I had one primary purpose for going, and that was to pick up one of the new Wouxun (pronounced "O-shing", sorta like "ocean") 2m/220 radios if at all possible.
I met up with Tom (KE4WFJ) and we arrived just as the doors opened at 8AM.
The first vendor to the right of the entrance had a HUGE sign advertising $110 with a picture of the Wouxun radios. Music to my eyes!!!
A friend who had just arrived said that another vendor next to them had the radios as well so I ran to check their prices and they were $105! But, no 2/220 radios. I hurried back to the first vendor, and he had 1 220 radio left. "SOLD!" I yelled, and pulled out the wallet!
I also grabbed a programming cable and then cruised the hamfest for about 3 more hours (also attending a SKYWARN gathering) before calling it a day and coming home.
Well, the radio had to wait as I was exhausted from, shall we say..."over-celebration" of New Year's (don't worry, I was home, and my kids had friends over, so I didn't get sauced) and riding on 3 hours of sleep wasn't going to fly, so I crashed until late in the evening, then went to run an errand before getting home to really put the radio to the test.
The vendor who sold me the radio (DBJ Radio & Electronics) was extremely helpful in ensuring I knew what I was getting with this radio. They checked the antennas (this model KG-UV2D comes with 2 antennas, one tuned for the lower portion of the 23cm band [216-239 MHz] the other the higher portion [240-280]) to ensure the correct ones were labeled and also a card with their web site to download the software I would need for programming the radio. Then when I spoke with another tech who was at the same booth he ran and got me a coupler for the SMA antenna that the first tech forgot to include for use on an external or mobile antenna. Service, baby!!!
So, now that I have "quiet time" I got the radio out and played with it. I downloaded the software from the DBJ web site and installed it and found the programming relatively simple but tedious, still, better than trying to program the radio manually. Once I plugged all the frequencies in and saved the file I uploaded the file and it went through in less than 10 seconds.
The radio took a few seconds to reset to the new memory settings and then when I unplugged the cable the radio spoke to me (in English)!
I tested the radio out on 2 meters first by checking some of the local repeaters and keying up to see if I could hit them on 5 watts. Most of them worked, but being midnight, no one was on (or cared to come back to my call) but on one repeater (147.360) I was full-quiet into the machine, and I was some 30 miles from the repeater! The station said my audio was clean and no noise or distortion whatsoever. A great start!
So now I move over to 220 and there's no activity. I turn on my 220 base rig and key up a couple of repeaters, one of which has a slight delay, so when I keyed it with the Wouxun I had an echo that startled me for a moment, but I used it to judge my audio into the repeater, and it sounded just as good as on 2m.
So now, as I have only had about less than 3 hours of time to dedicate to my new toy, I have found the following out:
- Lightweight - Compared to the Yaesu FT-50R I recently acquired from a friend of mine, it's much lighter. Almost half the weight. But the FT-50R's battery is bigger, 9.6V/11mAh compared to Wouxun's 7.4V 1300mAh.
- Easy to use (so far) - it took about 10 minutes for me to figure out most of the functions on the radio on my initial go-over of it. Of course we *all* RTFM when we get a new radio, right??? It was definitely a lot simpler than some radios I've used to figure out what buttons do what.
- 2m/2m, 2m/220, 220/220 monitoring -If you want to listen to 2 frequencies on 2 meters, 220, or one of each, you can listen to whatever frequencies no matter the band.
- Easy to program (with cable) - getting the software installed took a minute in part because I almost downloaded the wrong version of the software (my bad, I momentarily forgot I was on Windows 7 and the software is different for Vista/7 than for XP) but once I did download the correct version, I simply moved it to my desktop (no installation of software needed, it runs off the executable) and started using the software. I plugged the USB cable in and it found the driver (which I installed just before I downloaded the software as a precaution) and all I needed to do was select the COM port (easy since it was the only one highlighted) and started working the frequencies in that I wanted to program in to the radio.
- Illuminated keypad - the keypad below the LCD display lights up with the display on pressing of a button or tuning the VFO knob. Very nice to have when in low light.
- Voice prompt - it comes out of the box in English, with the option to have Chinese or no voice prompt at all. I had fun with the Chinese part, and it might come in handy to learn when visiting my favorite Chinese restaurant...
- Power setting not switching between high/low - It's 5W on 2 meters and 4W on 220 for high power, and 1W on low for both. Even though there is an option for high and low power, if you are on high power and select low, it negates the change and returns the setting to high. I can only assume this is a future enhancement. However, when programming via the software, it does enable the low power.
- "Rotary Encoder" knob sticks - this may be just on my radio, but the so-called "Rotary Encoder" knob (VFO knob) has some variable force needed to turn at certain areas. While twisting the knob it was easy to turn, then started to stick more and more, then eased up. I'm not sure how to remedy this (other than returning it, which is not a big issue for me at this time).
- Memory display slow to change - if you spin the rotary encoder/VFO knob and it clicks 3-4 times the memory display will only move up one channel. A faster processor might be in order for a future enhancement.
- A roger beep? - Seriously??? You can set it to beep before a transmission, after, or both. I wonder how popular that would be?
- Computer program can be tricky - When I started to program the frequencies in, the Receive frequency and the Transmit frequency default to the same. You'll have to know the correct input and output frequency of the repeater you want to talk on. Leave them the same for simplex ops.
- Muting of other channel can be tricky - I'm still working with this, but be careful about your encode and decode of CTCSS when programming a toned repeater, or one that's occasionally toned. I had one repeater set in there to send and receive CTCSS tone, and right now the repeater has no tone to use. While in QSO with the 2m station, the other channel keyed on and gave a dead carrier and muted the ham I was in QSO with.
I did find the FM radio for the broadcast band between 88-108MHz, so I listened to some music while hammering out this post.
Overall, it's a good start. I need more time, but wanted to give a quick evaluation of the radio.