Category: Communications & Receivers

Letter Re: MURS Alert Intrusion Detection System Product Review

Jim, I received my MURS Alert intrusion detection system last week, and have given it a good preliminary test. So far, so good. I am very impressed with this unit. All I had to do was turn a couple of dials to tune it to the channel and sub-code that I wanted it on, and it was good to go. Although I did disable the red “walk test” light, because with it turned on, it looked like a one eyed beast at nighttime when it tripped. The only other thing I did and that I highly recommend is that you …


Letter Re: Antenna Options For MURS and Other Hand-Held Transceivers

James: For the folks using the Kenwood MURS radios [such as those sold by our advertiser MURS Radios] or Ham gear, upgrading the stock antenna can make a world of difference in performance. I highly recommend the extended rubber duck and especially the large 1/2 wave telescoping antennas from Smiley Antennas in San Diego. They cost $20-25, and can dramatically improve their useful range. My little Yaesu walkie-talkie can hit maybe two repeaters with the stock antenna from my house. Using the large telescoping Smiley, I can get at least six more. Folded up, these aren’t that much larger than …


Letter Re: Communications for Disasters–Are Scanners Useful?

Jim, A very good shortwave portable is the Sony ICF-2010. It is an older portable from the 1980s but is a very strong performer with its synchronous detector. It is often found on the used market and eBay. One fact that many sellers don’t know is that you need to have fresh AA batteries in them for memory retention or the unit will not even function. Many sellers believe that their radios are broken when in fact only need fresh batteries. The unit can be run of D cell batteries or via an AC adapter. Another thing that “goes wrong” …


Letter Re: Communications for Disasters–Are Scanners Useful?

Hi Jim. I concur with your answer to the post regarding communications and scanner monitoring for disasters. I chose to and recommend implementing both multi-mode and redundant communications. Being that it may be virtually impossible to replace never mind repair most receivers and transceivers it is imperative to have at least two multi-band radios. Some good general coverage models that are still available are the venerable Radio Shack DX 300, DX 302 the DX 400 and the DX 440. The DX 400 and DX 440 are Sangean-made [chassis] in Radio Shack cases. All three radios are quite sensitive, wide band …


Letter Re: Communications for Disasters–Are Scanners Useful?

James: The hot thing in scanners right now is digital trunking. Most public-safety services use this approach, without scrambling or encryption. Analog scanners are useless, but the new generation of scanners include direct support for digital trunking. I recently bought a Uniden/Bearcat BCD 396T, which totally restored my ability to listen to common public-safety traffic where I live. Some more sensitive government agencies use encryption on top of digital trunking, but there’s no strong survival-oriented motivation to listen to their transmissions. Unless you’re trying to survive an FBI manhunt, I suppose. In an emergency, being able to monitor fire and …


Letter Re: Non-Nuclear Electro Magnetic Pulse Weapons

James: One tidbit I recently learned less than a week ago: non-nuclear EMP bombs are actually easy and cheap to make Its a permanent magnet, a coil, an antenna, and a bomb to push the magnet past the coil. The enormous electrical energy is released through the antenna causes a powerful EMP to be released, depending on the size of the device used. These tend to be heavy so I doubt you’ll see big ones flying around but a truck or railcar sized bomb would be really potent, possibly covering a dozen mile radius. Shipping containers probably won’t work that …


Two Letters Re: EMP Shielding for Electronics

Jim: Maybe I missed something during the acquisition of several undergrad degrees, including one in physics (actually, I probably missed several things)… but how exactly does a Faraday cage have any effect on uncharged particle emissions (neutrons) as suggested by the author of the article that you recently provided a link to? And since when did Einstein claim discovery of an element (Uranium) that was discovered in the 1700’s? His cages might work (hard to actually test anything vs. EMP without doing rather large scale experiments), but that sort of nonsense kinda damages his overall credibility. – Simple Country Doc …


Letter Re: Some Useful Ham Radio, DXing, and CB Radio Web Sites

Hi Jim. While reviewing accessories for the MURS radios, I perused my way onto this Ham radio site that is loaded with links to other sites and/or articles on antenna building for literally all of the radio spectrum.Of particular interest is this site for converting an old outdoor television antenna into a 2 meter (144-148 MHz) Yagi (beam) antenna for very little money: Since many of the readers of SurvivalBlog are interested in communications I feel these other sites would be helpful as well, here are some other useful sites regarding ham and CB radio repairs Radiomods.co.nz Roger Bird Antennas …


Letter Re: Communications and Monitoring for Disasters–Are Scanners Useful?

Hi Jim, Last week you discussed your preference for communication modalities for use in disasters and their order of importance. Obvious by omission were two modes that I thought might have distinct utility: a radio scanner (to monitor weather, traffic accidents and attendant backups, police and fire activity, etc.) and a transceiver with frequencies in the amateur bands (160, 80, 40, 20, 10 and 6 meters and the centimeter bands). Will you please provide your thoughts on the utility of these devices and whether or not you think they are worth the trouble (expense and licensing)? Thanks for your input. …


Letter Re: Solar Charged Walkway Lights –An Option for Battery Charging

Mr. Rawles, In response to what you wrote in the Blog on Friday, November 24th: “The system does has some utility. However, except for people that have an alternative power power system (quite uncommon around Washington, D.C.), in a long term TEOTWAWKI, stations will gradually drop off the air one by one because most folks will not be able to recharge their batteries. (Just another reason why every family should have at least a small photovoltaic (PV) power system.) Contact the folks at Ready Made Resources for details on setting up such a system.“ I read something a while back …


Letter Re: Product Review on MURS Radios

Jim, Hail and well met. – I purchased two of the handheld MURS transceivers from MURS Radios. (A SurvivalBlog advertiser.) First off, they arrived really fast. The shipping only took a few days. They were also packaged very securely. Although you can tell that these radios were used, they do not look abused in any way. I was impressed right off the bat by them. For one thing, they do not feel like a toy in your hand…they have some heft to them. They also came fully charged. In the box along with the radios were the chargers and good …


Two Letters Re: Advice on Disaster Communications

Hello, I am somewhat new to your web site. The information I have been able to get from it is wonderful and greatly appreciated. Have you seen the article from World Net Daily [about the DC Emergency Radio Network]? I have not heard of this type of system before. Respectfully, – B.W. JWR Replies: Yes, I saw the article. The DCERN uses the low power FRS band and thus these radios have very short range. I think that the higher power MURS or CB bands would have been a better choice. The system does has some utility. However, except for …


Letter Re: 12 VDC Wall Outlets and Power Cord Connections

Jim, For anyone using 12 VDC in their vehicle or home, you should strongly consider using Anderson Power Poles. Compared to the standard cigarette lighter plug, these are far more reliable and safer. (Cigarette lighter plugs have no uniform rating, and can melt if used for high [current] load applications.) These connectors come in ratings from 30 Amps (A) to 350 Amps. The 30A size is the de-facto standard for Ham radio operators now, and the larger sizes are what you see used for things like large battery racks in computer rooms and tow truck jumper cables. They are easy …


Four Letters Re: Prowlers and Lighting

James: The subject of handheld lights is as long as it is wide. Ask 20 people what is best, get 40 answers and recommendations! As with many things, today we live in a great time for flashlight technology. My recommendation is to immerse yourself in www.candlepowerforums.com. Some guys there are truly on the cutting edge of lights. Some of the modified lights are incredible. Have fun and enjoy a winter’s worth of reading. – Straightblast   Jim: Just enjoying a last respite prior to retiring in my mountaintop isolated home and read the letter on Prowlers and Lighting at SurvivalBlog. …


Letter Re: MURS Radios, Dakota Alerts, and PIR Sensors

Jim, I for one I’m very happy that your novel “Patriots” back in print. For a long time I gave this book away to friends who I thought might like it, and to some whom I wanted to “feel out” as to whether they thought preparedness was a good idea. I had to stop this of course when your book went out of print, and the cost went skyward. Now I can stock up again. Also I wanted to thank you for turning me on to MURS Radios. I just made an order with Rob, and will be making another …