Amateur Radio Emergency Service - W4ACA

Proudly using the Oak Ridge ARC (W4SKH) Repeaters & W4ACA APRS Digipeater

Showing posts with label Projects. Show all posts
Showing posts with label Projects. Show all posts

Monday, January 14, 2008

Wireless Radio Interface

K7AGE, Randy, has produced a new video which describes how to add a wireless headset to your radio. Add wireless to your wireless! The video shows how to use Jabra’s A-210 cellphone interface along with simple connections to your radio. Randy also demonstrates the VXI BlueParrott A150 headset, which provides better performance than commonly used bluetooth headsets.




Randy has also produced videos on PSK31 and AO-51 Satellite operations along with many other topics that are very popular the ham radio community.

All K7AGE video are available on YouTube - K7AGE.

Sunday, January 13, 2008

Antenna Launcher

Hello all,

I came across this on You Tube. It looks interesting.




Radio hams use air power to launch a wire antenna at their 2007 field day site.

The video is based on this site (Click Here) Antenna Launcher dot com

What is Pneumatic Antenna Launching?

Pneumatically Powered (Tennis Ball) Antenna Launching. Pneumatic Line launching is perhaps a more apt description. First we need a line in the trees, then we can pull up an antenna, which in most cases is a long piece of wire. In the launcher pictured above a Tennis Ball is propelled by compressed air, towing a fishing line over the tree. Then we pull up nylon mason twine with the fishline, and finally a wire or heavier line as needed.

Why does anyone need to Launch an Antenna?

It is often more convenient to use existing trees than to erect supports for wire or beam antennas, especially when these antennas are required for temporary or emergency field use. We set up antennas for disasters and drills, camping and contests, practice and fun. With all the applications for Homeland Security there are many potential uses for rapid deplyment. If you have a need to quickly set up antennas in various field situations, or you have some really nice trees in your backyard, you may have a use for Antenna Line Launching.

What is a Pneumatic Antenna Launcher?

It is a very simple system that uses the energy in a pressurized volume of gas (generally air), a valve to release the gas, and a projectile (tennis ball) in a tube that is accelerated by the expanding gas giving it the requisite velocity to pull a light line over the tree.

Read More

Monday, January 7, 2008

MS Office 2003 SP3 Literally Leaves Past Behind

January 6th, 2008 by Jovi Umawing

Microsoft seems to have started its 2008 on the wrong foot and drawing criticism just a day after the New Year. The Register is reporting Microsoft’s Office 2003 Service Pack 3 to be blocking old file formats that were defined to be less secure.

This includes legitimate file formats accessible to Microsoft’s own applications, such as MS Office Excel 2003, MS Office PowerPoint 2003, and MS Word 2003. This update also blocks file formats supported by Corel Draw, a graphics editing tool of software giant Corel.

Below is a list of some of the file formats blocked by the Office 2003 update, which was launched last December:

.wk1
.wk4
.wj3
.wks
.wk3
.wj2
.wq1
.fm3
.wj1
.ppt
.pot
.pps
.ppa

Microsoft advises their users to enable access to such files in case the need to use them arises. More of Microsoft’s information workaround regarding blocked files types are found here.

David LeBlanc, Microsoft’s Senior Developer, prescribes a number of links where Office XP 2003 users can still use the blocked file formats.

Much speculation about this blocking plan has been circulating for quite some time now, but official word is that Microsoft had done it for security’s sake. Some may not completely agree with this train of thought. Nevertheless, LeBlanc assured Microsoft clients (and his blog readers) that “this (the blocking of old file formats) is the right thing to do.”

Courtesy of TrendMicro

Sunday, December 30, 2007

Beta Testing new site.

Hello everyone,

I was bored this afternoon watching football... so I decided to play some with the Andersonville Volunteer Fire Department website that I am also the webmaster. The new page is located here at the BETA page.

Please let me know what you think about, the ONLY pages that are active are the HOME and NEWS pages at the moment. The others will follow once everyone is happy with it.

Feel free to let me know what you think, likes and dislikes.

Happy New Year!

Moe

Wednesday, December 26, 2007

New YouTube PSK31 tutorial videos

Randy K7AGE has recently put a couple of new PSK31 tutorial videos on YouTube.

PSK31 Transmitter Level Adjustment
http://www.youtube.com/watch?v=I3CwHaX7t5M

PSK31 - Operating
http://www.youtube.com/watch?v=ZaAXMzGIUGA

Randy has previously posted several other PSK31 tutorial videos
Part 1: Introduction to PSK31 - Receiving
Part 2: Sample of 20 meter activity for PSK31 introduction
Part 3: Video Soundcard Interfacing

They can be seen at
http://www.southgatearc.org/news/september2007/psk31_introduction.htm


Related URL's

Digipan PSK31 Download Page
http://www.digipan.net/

British Amateur Radio Teledata Group (BARTG)
http://www.bartg.org.uk/
BARTG Yahoo Email Group
http://groups.yahoo.com/group/bartg/
To join email: bartg-subscribe@yahoogroups.com

Wednesday, November 14, 2007

Running Barefoot on the Beach

By H. P. "Pete" Friedrichs, AC7ZL

November 13, 2007

Casual QRP in a Tropical Paradise

The phone in my office rang. I picked up the receiver. My wife's voice buzzed in the earpiece.

"Have you ever been to Puerto Rico?" She asked.

"No, why?" I chuckled, wondering what would come next.

She explained that her employer was sending her to San Juan for a week on business. "Why don't you go with me? It’ll be fun." Hmmm... Let's see... a nice hotel room, warm ocean air, the beach... she didn't have to twist my arm very far.

"That sounds great. I'll put in for the vacation time." We chatted for a bit longer, and then I hung up the phone.

For better or for worse, radio and electronics are never far from my thoughts. So, as I daydreamed about my pending trip, my thoughts wandered to all of the QST articles I'd read concerning DXpeditions and those who travel in order to operate from the remote corners of the earth. I didn't know if Puerto Rico counted as an "exotic" location, or even DX, but I decided that doing a little radio work while I relaxed might be a lot of fun. I wondered if my license would be valid there.

Puerto Rico is a sovereign nation. On the other hand, it's also a commonwealth of the United States. So while Puerto Rico is self-governing, the President of Puerto Rico is in fact the president of the United States, and many US federal agencies like the FCC have jurisdiction there. To confirm this, I shot an e-mail over to the ARRL offices, asking if any special paperwork would be required to operate in Puerto Rico. They responded that none was needed

Read More

Tuesday, November 13, 2007

Confessions of a Shopping Trolley Wally

By Andy Foad G0FTD from the The South Gate Amateur Radio Club

Some time back in the beginning of 2005 I hatched a devious plan to get a decent signal out on HF using a shopping trolley.

The advantage was that I could easily take a 10 minute walk to the beach where I'd be able to have the massive advantage of nature's best linear amplifier called the sea.

It seems to add at least 20db when compared to nature's best attenuator - a typical suburban plot with poor earth conductivity and all that bricks and mortar adding insult to injury with those low angle signals.

Read More

Wednesday, October 31, 2007

Assorted Grounding Hints, Kinks and Technical Correspondence

What is an RF Ground?

RF ground is a vague term: People claim they know what it is when they see it, but can't define it. Many radio amateurs are easily misled by untruths about RF grounds. What follows is by no means the last word on RF grounding, but should help fill a void in the radio amateur's literature.

In my opinion, an RF ground is something that presents a low impedance at all frequencies of interest on the desired ground surface. All frequencies of interest usually means just the transmission frequency and all spurii. Spurii usually include harmonics, but may include mixing products. The ground surface is the tricky part. What do you want to be at ground potential? Surely you don't expect your microphone to be at ground potential on all frequencies, do you? Think about it: A coiled microphone cord is a bigger radiator than many "rubber duck" antennas! With proper matching, you could probably make a better antenna out of the mic cord shield! In this case, low impedance means "small reactance and resistance." Some radio amateurs just look at the resistive part of the impedance and forget about the reactance, which often is huge!

The size and shape of conductors are very important in evaluating a ground surface. Take, for example, a tall, thin aluminum structure that is grounded at one end. No matter how well you ground that one end, the structure still radiates and receives RF energy--that's why it's called an antenna. The shape that offers the lowest impedance is a sphere. (The Earth is a pretty good approximation of a sphere.) Size is also important--you wouldn't expect a metal-covered tennis ball to present a low impedance on 160 meters.

Read More

Lighting Protection Articles:

Lightning Protection for the Amateur Radio Station -- Part 1 (QST PDF)

Lightning Protection for the Amateur Radio Station -- Part 2 (QST PDF)

Lightning Protection for the Amateur Radio Station -- Part 3 (QST PDF)

Choices and consequences of station lightning protection (article) if you choose to not properly ground your station.

Monday, October 29, 2007

Letters from an HF Newbie

Steve Handler, N9ABC
uscapmajor-n9abc@yahoo.com


Some of us know code and some of us are “no code.” Some of the latter, including the author, now hold General and Amateur Extra class licenses.



A view of the balun and west leg of N9ABC’s indoor dipole antenna.







My modest station: Yaesu FT-897 transceiver, LDG Z-11Pro tuner, headset and clock.

Two QSLs from my DX activity: OX60AD, Greenland, and 5D5A, Morocco. I’m a proud member of the group of people who, since February 24, have become radio amateurs with HF privileges without having to pass a Morse code exam. My adventures in ham radio to date may be both interesting and instructive.

First, the nitty-gritty. My shack qualifies for the worst-case scenario. I have a great rig and tuner -- a Yaesu FT-897 and a LDG Z-11Pro. My antenna, however, is an indoor 33 foot dipole with a balun in the feed line. Because of its substandard location, I somewhat affectionatelycall my antenna the “Krappo One.”

An indoor dipole? I can hear you snickering. CC&Rs (deed covenant, conditions and restrictions), right? No, much worse. It’s a matter of my wife’s restrictions on what she will tolerate outside. In this case, that means nothing unsightly that the neighbors can see.

With 100 W and my indoor dipole, you might wonder what I’ve been able to achieve. Well, after my first eight months on the air, I’ve worked 97 DXCC entities (formerly called “countries”), and have QSLs from 86 of them. “Not bad,” say I.

Using my tuner and my 20 meter dipole, I can also get on 40, 17 and 15 meters. Most of my contacts have been on 20 meter SSB, although I have started to play with PSK31.

So, what DX does a newbie from the Midwest encounter on HF? If I rounded up the usual suspects they would include contacts with Europe, the Caribbean and South America. Within Europe, Italy, Spain and Russia seem to be the most plentiful. Their friendly hams appear willing to work with newcomers to the HF bands. Being a glutton for punishment, one day I dropped my power to 10 W and still was able to work Slovenia.

Many Europeans seem to enjoy short QSOs (often just an exchange of signal reports) and then move on. Not so for many of those from the United Kingdom. They love to chat. Bless them for putting up with my low power, marginal antenna and puny signal. Contacts with Africa have been sparse. I’ve worked a handful of Moroccans, Algeria, Liberia, Madeira Island and little else. The Caribbean and South America hold a special place in my heart. Operators in those parts of the world generally seem friendly and interested in working stateside stations.

The lesson here is that even with minimal gear and a compromise antenna, it’s still possible to have a lot of fun on HF, including working DX.

What I Have Learned So Far

Lesson 1: Courtesy and patience are the golden rules.

Lesson 2: Find an Elmer, someone who can be your mentor. I’ve gone “two better” and have three of them. All have provided invaluable tips and hints. All are long-time hams who have been there and done that. They are patient and more than willing to help me out with problems and questions.

Lesson 3: Not all days are created equal. Propagation at this point in the solar cycle seems to vary not only from day to day but according to the time of day. Find something else to do when propagation is poor, unless you enjoy warming the ionosphere. This brings me to “Steven’s Rule of Woe”: The amount and quality of DX available on the air tends to be inversely proportional to the amount of time you have available to hunt DX.

Lesson 4: Timing is everything. I’m learning to operate like an ant dancing with elephants. Although outgunned in power (and antenna system) by almost everyone else on the air, I’ve already learned about using timing to break a pileup. One recent evening, I worked Algeria by listening to the pileup and noting a pattern to the QSOs. I determined that after the DX station called CQ, about six seconds into the caterwauling of call signs there almost always was a slight one-second lull before he either answered a station or the bedlam resumed. I timed my call to hit that lull, and, sure enough, I got through and he came back to me.

This method has worked over and over for me. Although each pileup seems to have a different pattern, there is almost always a pattern to be found. If you’re running low power, try timing your calls for the lulls in pileups.

Lesson 5: Every dog has its day, and every region has its time of day. Different regions tend to have better signals at different times of the day. For me, the Caribbean is good in the early morning and late afternoon. South America also is good in the late afternoon. Europe tends to be good from mid morning to mid to late afternoon, while Africa has been good in the early evening hours. Your situation will differ depending on your location, but listen a lot and get a feel for when to expect to hear one region of the world or another.

Lesson 6: Stick to it! Pick a band, and learn it. I have chosen 20 meters and am learning its various ins and outs -- especially propagation and knowing what parts of the band yield the best chance of working DX. For example, I have found that above 14.300 MHz are a number of nets, and my chances of catching any DX there are not as great as in the lower end of the band. Like all rules, however, there are exceptions. Recently on 14.330 MHz I worked a maritime mobile out of Germany and had a nice 10 minute chat.

Lesson 7: Become a contestant. Early on I complained to one of my Elmers that contests clogged the bands on weekends and made it hard for me to DX. He wisely pointed out, however, that contests are golden opportunities. Join the contest, and go after the participating stations. I’ve snagged a number of DX entities this way.

Lesson 8: Listen before you speak! Very early on, I joined pileups even before I had solid copy of the target station’s call sign. I figured it if was good enough for others, it was good enough for me. This bad habit ended abruptly. One day using my timing technique, I broke a pileup to work what I thought was a great catch. His exotic DX location turned out to be a neighboring city, and I had to face his question as to whom I thought I was calling. Oops! Never mind!

Lesson 9: I have heard the enemy, and it is I. Using an indoor antenna I have sometimes caused RFI within the house. The Palomar Engineers RFI Kit of toroids and beads judiciously placed on telephone cords, computer mouse, keyboard wires and other key locations have helped me eliminate RFI within the house.

Lesson 10: CQ, CQ, CQ Whirlpool? Household appliances create interference, and having an antenna indoors only makes things worse. My front-loading Whirpool washer is one of the worst offenders. The faster its high-speed motor whirls, the worse the interference. Let’s see, clean clothes or DX? Guess which one wins out? Other offenders include two of our televisions and the fluorescent lights. All of the interference is radiated, not arriving via the power line. Detective Steve found that if you detach the antenna, the interference goes way. The moral of the story is to DX when no one else is home (or at least doing the laundry), or learn to live with some interference.

Final Observations

New licensees want and need to learn. Most want ham radio to be a great hobby not only for themselves but for their fellow hams. Veteran radio amateurs have a golden opportunity to help educate and teach new hams and shape their operating habits for life.

Unless you enjoy talking to yourself, ham radio will always be a matter of teamwork. Get on the air and join the team, and we’re all winners.

73 and good DX!

Steve Handler, N9ABC, lives in Buffalo Grove, Illinois. His interest in ham radio began as a shortwave listener (SWL) using a Knight Span Master. He became a Technician class Amateur Radio licensee in 1991, and he’s been involved in ARES and RACES. Earlier this year he upgraded, first to General and then to Amateur Extra, and he obtained the vanity call sign N9ABC. He’s also written for Satellite Times and Mobile Computing Magazine.

Sunday, October 21, 2007

Digital Master 780 by Ham Radio Deluxe

Digital Master 780 by Ham Radio Deluxe

Started in September 2006, Digital Master 780 (DM780) is a multi-mode program supporting the most common digital modes such as PSK, RTTY, and MFSK. It replaces PSK31 Deluxe which is now a legacy program.

DM780 is designed to work with Windows 2000, XP and VISTA. It will not work on Windows 98 systems, Linux or Macintosh.

Suggested minimum requirements are 1 GHz CPU and 512 MB of RAM. A wide screen helps - the wider the better!

Advantages of DM780 -

- Fully customisable.
- Integrated with Ham Radio Deluxe for radio control.
- Logbook with eQSL, ADIF, Cabrillo, Callsign Lookup and Google Earth interfaces.
- Modern user interface.
- Free!

Modes:

Current -

The modes currently supported are: PSK, QPSK, CQ, MCW, DominoEx, MFSK, MT63, Olivia, RTTY and Throb.

Thursday, September 27, 2007

PSK31 Tutorial On Video

If you ever wanted to get into digital communications but thought setting up all those interfaces was too much trouble, try watching this video.

Randy K7AGE shows just how easy it is to receive PSK31 with a ham receiver, a PC and a cheap PC microphone.

After sampling PSK31 you may want to create a permanent setup using a dedicated interface. Randy has created a second tutorial explaining the use of interfaces and describing a few that can be bought ready made - Read More

Monday, September 17, 2007

Anderson Powerpole Ideas: Get Everyone Connected

Nov. 6th, 2003, By Steve KB1DIG & Kim KB1GTR

Anderson Power Products and Powerpole® connectors. We have been doing research on this product and here are some of our findings. This overview may be familiar. Most of this information was found from different sources on the Internet and several Web links are listed on this page. We hope this will offer some new insight into how to go about integrating this Anderson Powerpole product into everyone's emergency power equipment needs. Our suggested attempts at leveling the playing field.. Also, keeping costs reasonable for the high-tech low budget practical minded Amateur in all of us. We are not experts and have no affiliation with the manufacturers or sales vendors mentioned.

Read More

Wednesday, September 12, 2007

Emergency Lighting Ideas

Courtesy of Steve KB1DIG & Kim KB1GTR, Feb. 24th, 2004

Emergency Power operation is becoming more common place, with a few different good ways available to accomplish this goal. We decided some time ago, to go with 12v/DC battery backup power. Several Hams spend a lot of time preparing to run their equipment during a blackout. There does not seem to be a lot of information out on station lighting. We observed normal incandescent or even fluorescent lighting can greatly increase the drain of battery backup systems. A single 5Watt Halogen 12v/DC bulb runs @ 400mA, and produces a lot of light. This Jumbo LED runs at only @ 40mA, with less light produced, but still a fair amount. 2 or 3 of these LEDs seems to do the trick at this QTH. Enough lighting to work with and a lot less overall power drain.. The Energy Efficiency of the LED is truly worth your time exploring.

Read More

Thursday, September 6, 2007

Building a Go-Kit

Courtesy of Diehl Martin W4TI

What is a Go-Kit?

A Go-Kit is a portable amateur radio station which the radio amateur can take when asked to go to an event which needs support with radio communication. What is consists of depends on the extent of the event, and the communication needs. Making a pre-planned kit helps the thought process as to what will be needed, and how it will be used. What I present here is the thought process which resulted in my current Go-Kit, which might inspire you to improve on it.

Read More

This is one of best ARES web sites I have come across lately. I feel that it would be well worth your time to take time, look around and read the information he has posted.

73, de N4CQW Moe

EmComm vehicle of Steve Hicks, N5AC

While surfing around this afternoon I came across this web page. It is one of the most interesting vehicles I have ever seen. It is the EmComm vehicle of Steve Hicks, N5AC

Any comments on this one? This would be interesting vehicle to drive down the road.

73, de N4CQW Moe

Sunday, September 2, 2007

Solder Smoke Web Site

Solder Smoke

Solder Smoke Report #65 Link

July 1, 2007 Alexanderson Day.

Report from Friedrichshafen. Ole Romer, Hippolyte Fizzeau and the speed of light.

Zen, toroids, QST, and the joy of homebrewing. BOOM!

Ramakrishnan's RFI disappears in a flash! (Again!)

BANDSWEEP: Jason, NT7S, lets us listen to 40 CW on Field Day with his homebrew Tualatin rig of FDIM fame.

MAILBAG: K8VU tells of Rick Campbell's envious thoughts on the Drake 2-B.

VK3HN on Zen and Motorcycle Maintenance, quiet bands in VK.

KA9OOI tells us when he got The Knack.

MOHBR SIGNS OFF FROM LONDON -- Summer travel plans. On to Rome.

A RSS syndication feed has been added at the bottom of the page that will automatically update when a new MP3 is published.

AmateurLogic.TV

While looking around for some new project ideas for the web page and items of interest for everyone I stumbled across Amateur Logic TV.

It is a interesting mix of technical projects and projects relevant the current events (i.e. Field Day or Dayton Hamvention are a couple of examples)

A couple of the current topics are:

- Software Defined Radio
- Basic Stamp Micro Controller

The post or blogs are recorded in a video format the can be watched on You Tube or Google video.

If anyone has any ideas to go along with any of the topics that have been discussed please feel free to post ideas or comments to any of the discussions others bring up.

A RSS syndication feed has been added at the bottom of the page that will automatically update when a new video is published.

73,

Moe N4CQW

Anderson County ARES Information

The Anderson County ARES net meets every Tuesday Night at 7PM local time.
We use the the W4SKH Oak Ridge ARC repeaters.

The main repeater is: 146.880 PL Tone 88.5 (Currently Online)
The current back up is: 146.970 (Currently Online)

The ARES Nation Simplex Frequency is 147.420 and will used if required.

The net preamble for the Anderson County ARES net can be found here.
NET PREAMBLE

Net Control Station Manual

New FCC BAND PLAN (pdf) Updated Version with a different layout HF Band Plan Vertical (pdf) Courtesy of KB6NU's Ham Radio Blog

If you would like to join Anderson County ARES please complete the application form and submit it by email to Jeff or Moe.


Emergency Coordinator and Staff

Jeff Yawn K4IK Emergency Coordinator (865)567-2577
Jim Bogard - KY4L Assistant Emergency Coordinator
Larry Hensley - KB4ITS Asst Emergency Coordinator / Net Manager
Steve Lothridge - KI4RGN Net Manager
Moe Brewer - N4CQW Asst Emergency Coordinator / Webmaster

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