I am a amateur radio operator or ham as many people say. First step is to admit you have a problem? Well, I do spend a lot of time on the radio. Not so much in the way of talking, but listening. I listen to all sorts of crap out there. I like to see what country is booming in to the US and what type of traffic it is. Voice is cool and fun, but digital or data mode is really cool. Most of my time is spent watching the waterfall on FLDIGI. This program performs on all bands in many different data modes. Best of all it is free.
Let's get on to my thoughts on laptops. I have used laptops by Dell, Toshiba, IBM/Lenovo, HP. Had all them for a few years at a whack. Used for all sorts of tasks, serial port comm, network tasks like email, and swatting hornets and the like. The most reliable laptop I have used for work and personal tasks has been the IBM T41/T61 series. Batteries are hit & miss. But, I have had good luck with the batteries for the IBM series of laptops. I comb e-bay looking for these and there is a lot of them out there in good operational shape. They are not fancy machines at all. But, they work and last. They may not survive a gravity check, but they are a work horse. I bump up the RAM if there is only 1Gb and load Linux Xubuntu on it.
While I am on the topic check out Compaq dc7900 SFF desktops or dc7800 SFF desktops. These can be awesome machines for radio. Runs Linux and is reliable and tough as well. Bump the RAM to max and you have a machine that will play video or music and let you get into your radio hobby. Efficient power consumption and a small footprint that does not eat up a lot of real estate around the desk. I have built the PC's with the 600w power supplies, 4Gb of RAM, and ASUS mother board made with surround sound in the giant server case. It was fun to do and learn how to build a PC.
So, you may say Ok, but what do these handy dandy computers cost? A used one with no OS can be had for less than 100$. Hard drives can be had at a reasonable price, same with RAM. Linux is free. You end up with a machine that is hard to beat.
Just my thoughts. Everyone has their opinions and I am sharing mine with the equipment that works for me. If you are looking, just some ideas that won't break the bank.
Enjoy,
Showing posts with label ham radio. Show all posts
Showing posts with label ham radio. Show all posts
Monday, January 5, 2015
Friday, October 19, 2012
To Send an Image or Data without Internet
Let's say there is some sort of disaster where the internet is not working in my area, phones are down, the cellular network generators have run out of fuel and batteries have died. How would one communicate in such an environment?
As of late I have been tinkering with RTTY, Contestia, PSK using my PC and radio. The program I use on the PC is fldigi. I run Ubuntu 12.04 at the moment and have been having good luck with it. Not real happy with the new desktop and fell back to the Gnome desktop and interface. Enough of that.
Anyway, I have been operating on 20m, 40m, 80m in data mode. Made contacts as far as OH, lower NY, SC in the evening with little power out. I will need to continue my testing to see how far I can get. Folks from all over the world use this mode of communication to pass data. It is exciting to know that anything from SITREP to images (using QSSTV) can be sent in these modes. The new version of QSSTV just got loaded on the PC. I need to test since I used a much older version. The caveat for any of this is atmospheric conditions.
What do you need to try it out? An amateur radio license (simple enough to get), radio, PC, interface cable. All the software is free. Unless you are a Windoz fan.
Enjoy
As of late I have been tinkering with RTTY, Contestia, PSK using my PC and radio. The program I use on the PC is fldigi. I run Ubuntu 12.04 at the moment and have been having good luck with it. Not real happy with the new desktop and fell back to the Gnome desktop and interface. Enough of that.
Anyway, I have been operating on 20m, 40m, 80m in data mode. Made contacts as far as OH, lower NY, SC in the evening with little power out. I will need to continue my testing to see how far I can get. Folks from all over the world use this mode of communication to pass data. It is exciting to know that anything from SITREP to images (using QSSTV) can be sent in these modes. The new version of QSSTV just got loaded on the PC. I need to test since I used a much older version. The caveat for any of this is atmospheric conditions.
What do you need to try it out? An amateur radio license (simple enough to get), radio, PC, interface cable. All the software is free. Unless you are a Windoz fan.
Enjoy
Monday, October 8, 2012
Improve Radio Reception...
Not to long ago I had one of my multiband dipoles break. I thought that it would be a good idea to fix it before the snow comes along. Most good radio operators wait until there is a couple feet of snow before working on antennas. But, I broke the rules and made a new one with a 4:1 balun and 120' of #12 ga. wire. I also had to re-solder the PL-259 connector on the cable.
Well, the results were very good. I can tune up on the bands I use as well as listen to the shortwave frequencies. The signals were booming in up here in the north. But, it is evening and the bands have fallen off with lots of atmospheric noise. I read earlier today that the sun had a CME and maybe if the sky is clear I will get to see the northern lights.
I also changed the orientation on another dipole I use for shortwave. Wow, that did the trick. I think I will have to continue to tinker with that one and get the ends unrolled. At the moment the antenna is up in the rafters on the porch. I will move it to the outside and hang somewhere. I am confident that the reception will be much better.
The great thing about the WWW is that there are a ton of resources to review. A little bit of experimenting on your part will go a long way.
Enjoy,
Well, the results were very good. I can tune up on the bands I use as well as listen to the shortwave frequencies. The signals were booming in up here in the north. But, it is evening and the bands have fallen off with lots of atmospheric noise. I read earlier today that the sun had a CME and maybe if the sky is clear I will get to see the northern lights.
I also changed the orientation on another dipole I use for shortwave. Wow, that did the trick. I think I will have to continue to tinker with that one and get the ends unrolled. At the moment the antenna is up in the rafters on the porch. I will move it to the outside and hang somewhere. I am confident that the reception will be much better.
The great thing about the WWW is that there are a ton of resources to review. A little bit of experimenting on your part will go a long way.
Enjoy,
Saturday, September 8, 2012
To Enhance My Icom IC-910...
I have been evaluating the Baofeng UV-5R 144/440 handy talkie. So far I am really impressed with the function of the radio. I have read many reviews about the radio over at eham.net.
Like any product there will be folks who like it and folks who don't. As I mentioned above I am having good luck with the radio.
Anyway, I wanted to expand the capabilities of my IC-910. Off to the internet I go in search of how to do this procedure. The internet is such a wonderful place, filled with how-to's for everything under the sun. Some of the IC-910 radios have the ability to receive much more than they can transmit. Older generation radios need to have a few diodes removed. When this is done the radio does not turn into a super receiver/transmitter. It just opens up the receive more like the modern radios available to day. Of course the transmit can be opened up, but be careful.
I purchased the filters and 1Ghz module and got those installed. Found a couple of places that had procedures for increasing the performance of the rig. Here are the links to those sites. These are .pdf files, download them and file for future reference.
Icom IC-910 Mods
Icom IC-910 Mods plus all the other Icom mods.
** Transmitting outside of the amateur radio bands is illegal, as well as operating an amateur radio station without a license. Had to include that one.
** Any modifications you do are done at your own risk.
Enjoy
Like any product there will be folks who like it and folks who don't. As I mentioned above I am having good luck with the radio.
Anyway, I wanted to expand the capabilities of my IC-910. Off to the internet I go in search of how to do this procedure. The internet is such a wonderful place, filled with how-to's for everything under the sun. Some of the IC-910 radios have the ability to receive much more than they can transmit. Older generation radios need to have a few diodes removed. When this is done the radio does not turn into a super receiver/transmitter. It just opens up the receive more like the modern radios available to day. Of course the transmit can be opened up, but be careful.
I purchased the filters and 1Ghz module and got those installed. Found a couple of places that had procedures for increasing the performance of the rig. Here are the links to those sites. These are .pdf files, download them and file for future reference.
Icom IC-910 Mods
Icom IC-910 Mods plus all the other Icom mods.
** Transmitting outside of the amateur radio bands is illegal, as well as operating an amateur radio station without a license. Had to include that one.
** Any modifications you do are done at your own risk.
Enjoy
Tuesday, September 4, 2012
A Book With A Map & Repeaters Listed...
If you are a amateur radio operator more than likely you have a repeater book on your desk or in your car. These little books are handy, especially if you are on the road. Technology today finds us with a cell phone with GPS or a GPS on the windshield. What happens when there is no cell coverage or for some reason your GPS dies? I guess it is time to break out the good ole' road atlas. Some of them are gigantic and a pain to keep from getting torn up as they float around the inside of your car/truck.
I have this bag I keep in the car. Has a few items in it that would prove useful in an emergency. What can I keep in the bag to give me a basic map? How about amateur radio repeater frequencies (That I forgot to program into the radio)? Hmm...
Check out this handy little book. Maybe not so little as it is bigger than the repeater reference book. But, it is smaller than the average sized road atlas. Artsci Repeater Map Book is published every year or so. Contains all of the amateur radio repeaters across the US and a map of each state. Each state map has the major routes listed as well as a few other goodies. A very handy book to have in your kit.
http://www.youtube.com/watch?v=OIXuXsXvAWM
Can be ordered from here: http://www.artscipub.com/mapbook/
** I am not associated with Artsci in any way.
I have this bag I keep in the car. Has a few items in it that would prove useful in an emergency. What can I keep in the bag to give me a basic map? How about amateur radio repeater frequencies (That I forgot to program into the radio)? Hmm...
Check out this handy little book. Maybe not so little as it is bigger than the repeater reference book. But, it is smaller than the average sized road atlas. Artsci Repeater Map Book is published every year or so. Contains all of the amateur radio repeaters across the US and a map of each state. Each state map has the major routes listed as well as a few other goodies. A very handy book to have in your kit.
http://www.youtube.com/watch?v=OIXuXsXvAWM
Can be ordered from here: http://www.artscipub.com/mapbook/
** I am not associated with Artsci in any way.
Sunday, September 2, 2012
A Radio To Communicate...
In times of emergency or while you are out and about having a way to communicate can be handy. It may even save a life. Now, there are several types of radios; FRS, GMRS, MURS, Amateur, etc. Cell phones are every where, but maybe there is no coverage. Something has caused the local cell to be off the air? What to do now?
FRS & GMRS operate up in the 400 MHZ range of frequencies. Good for keeping in touch for everyone in a two to five mile radius. The user can set up privacy codes, but the transmission is not secure. The privacy codes just let the users "call" each other by setting a code up in each radio. Prevents unwanted contact in the band.
Trisquare TSX-300 and its variants are pretty cool radios that operate in the 900 MHZ range. Limited in distance, maybe on a good day a user can get a mile. But, that depends on the terrain. The best I could do is half a mile. You may ask what good these radios are? Well, they use spread spectrum frequency hopping, texting capability radio to radio. Each radio has a specific address. This means users can communicate directly without people listening in. Or use the group frequency and talk to all radios. More frequency codes then you can imagine.This results in a very secure means of communications in your AO base camp and vicinity. Some users have complained that they cannot sync more than three radios. At the moment I have two of these with plans to get more to test out. Amazon has these radios at a reasonable price for two.
Lastly, the one radio I found to be a bargain; Baofeng UV-5R. This little hand-held radio is excellent for the money. Less than 60$ at Amazon. Has more features than you can shake a stick at. Single LED flash light, FM broadcast band reception, transmits high and low of the 144 and 400 MHZ ham bands. Can be programmed by a USB cable attached to your PC. Takes a little bit of time to get it programmed, but I found some useful Youtube videos to help out. Once again the price is great for a radio that will do as much as more expensive radios.
Baofeng UV-5R Setup Operation By AB5N
Give some thought to how your family, friends, and neighbors will communicate during an emergency. Develop a plan and acquire the equipment you need to keep everyone safe and in touch.
Enjoy
FRS & GMRS operate up in the 400 MHZ range of frequencies. Good for keeping in touch for everyone in a two to five mile radius. The user can set up privacy codes, but the transmission is not secure. The privacy codes just let the users "call" each other by setting a code up in each radio. Prevents unwanted contact in the band.
Trisquare TSX-300 and its variants are pretty cool radios that operate in the 900 MHZ range. Limited in distance, maybe on a good day a user can get a mile. But, that depends on the terrain. The best I could do is half a mile. You may ask what good these radios are? Well, they use spread spectrum frequency hopping, texting capability radio to radio. Each radio has a specific address. This means users can communicate directly without people listening in. Or use the group frequency and talk to all radios. More frequency codes then you can imagine.This results in a very secure means of communications in your AO base camp and vicinity. Some users have complained that they cannot sync more than three radios. At the moment I have two of these with plans to get more to test out. Amazon has these radios at a reasonable price for two.
Lastly, the one radio I found to be a bargain; Baofeng UV-5R. This little hand-held radio is excellent for the money. Less than 60$ at Amazon. Has more features than you can shake a stick at. Single LED flash light, FM broadcast band reception, transmits high and low of the 144 and 400 MHZ ham bands. Can be programmed by a USB cable attached to your PC. Takes a little bit of time to get it programmed, but I found some useful Youtube videos to help out. Once again the price is great for a radio that will do as much as more expensive radios.
Baofeng UV-5R Setup Operation By AB5N
Give some thought to how your family, friends, and neighbors will communicate during an emergency. Develop a plan and acquire the equipment you need to keep everyone safe and in touch.
Enjoy
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