Category: Communications & Receivers

Letter Re: The Importance of Proper Hearing Protection

Jim: Regarding the [recently mentioned] Peltor tactical 6S (sound trap) [electronic earmuffs]: While the battery power for these is somewhat of a concern, they are well worth what you might spend keeping a few extra sets of AAA rechargeables (two for each ear) around. I, too, have been running these muffs for a number of years and really like them, especially under a helmet. The radio part works well too. On the qualification range with all the M4s going off, you can hear a hammer fall. So here is my quandary and request for advice. I’ve tried NiCd and NiMH …


Letter Re: Great Results with MURS Band Handheld Transceivers

Sir: I got two MURS radios from Rob [at $49 MURS Radios] and I am very pleased with these radios. They are in great shape and even though I live in the mountains of Western NC they have an excellent range, five times more than the GRMS radios that I have. Rob was excellent to deal with and answered all my questions. I would encourage anyone who is looking for short range communications s to consider Rob and the MURS radios. I will be trying the radios later on at my In-laws home because they live in the piedmont region …


Letter Re: Potential Range of Nuclear Weapon EMP?

Mr. Rawles: I’m confused. Some things that I’ve read say that the maximum range of [nuclear weapon electromagnetic pulse] EMP is about 60 miles, but others say 200 or 250 miles. Which of them is right? Wouldn’t a terrorist bomb at ground level have shorter range EMP than a nuke touched off at high altitude or low orbit? (With a wider horizon.) Thanks, – Lance in Nebraska JWR Replies: You aren’t the first SurvivalBlog reader to ask about the greatest potential effective range of an EMP-optimized nuclear detonation. I first discussed this in SurvivalBlog back in October of 2005. The …


Letter Re: Question on LEDs and EMP

Hi Jim: Your blog is the best I’ve come across on the Internet. Very useful information. Regarding the subject of [Electromagnetic Pulse] EMP, are the new Light Emitting Diode (LED) flashlights more, or less immune to EMP than those using conventional incandescent bulbs? Modern solid-state circuitry is in grave danger of terminal damage in the event of an EMP occurrence. LEDs are composed of a semiconductor junction, similar to transistors and integrated circuits. Do modern LED flashlights have enough of the right characteristics to pick up sufficient EMP burst energy and become permanently useless? Your comments please, and thank you. …


Letter Re: Advice on Where to Learn Practical, Tactical Skills

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Dear Jim: As my confidence in the dollar depreciates and my desire for skills increases, I’m wanting to convert FRNs into hands-on knowledge. What weeknight or weekend workshops would you recommend? Are there any places where you can learn Army Ranger skills without joining the military? Animal husbandry, and so on? – Spencer JWR Replies: There is a tremendous wealth of free or low-cost classes available–enough to keep you busy every weekend of the year if you are willing to drive a distance. If you have time and just a bit of money, you can get some very well-rounded training …


Book Excerpt: Patriots: Surviving the Coming Collapse

SurvivalBlog reader L.C. recently asked me: “What’s your novel “Patriots” like? Is it like the Jerry Ahern [“The Survivalist”] books?” My novel “Patriots” is hard to describe. It is a fast-paced novel, but it is not at all like Jerry Ahern’s novels. I did my best to weave a lot of practical and tactical information into the storyline. To illustrate, here is an excerpt from one of the later chapters in the novel (titled “Radio Ranch”) that shows the style: Edgar Rhodes had just turned 72 when the Crunch hit. He had lost his wife two years earlier, to cancer. …


Letter Re: Free Shipping Special on MURS Radios

Hi Jim, I have been fortunate to acquire another batch of $49 MURS radios. In honor of Patriots Day and the wonderful support from your readers I am able to again offer them a special deal. With the purchase of two or more radios you will get free shipping. Please see this special ordering page for details. This offer will expire when supplies have been depleted so don’t delay. These radios are ideal for spring and summer outdoor activities as well as for use in “hard times” communications. Thanks! – Rob


Information and Communication Capabilities for Preparedness, by NC Bluedog

Dear JWR: My wife and I use a “thinking process” concerning preparedness that I would like to share with you and your readers, as well as expand upon one of the items. We organize our thoughts and actions along the line of tiers of necessity for survival. This is analogous to the oft-quoted “beans, bullets and band-aids” strategy. The first tier is absolutely critical for survival and consists of air, food, water, shelter and security. This not only includes physical items such as stored food and weapons for security but also knowledge such as gardening and tactical/strategic planning. The second …


Letter Re: Practical Information on EMP Protection for Home Electronics

Sir: Thank you for your hard work. I am not sure if this was covered here before and, in the case it has not, I wanted to supply the following information to help suppress fear regarding electromagnetic pulse (EMP) and specifically, its effects on communications equipment. I am tired of reading “seal the radio in a metal ammo can, place the ammo can in an old microwave and place the old microwave in an old refrigerator, which is then buried under 8 feet of earth,” et cetera. Here is the reference for a four-part article in Amateur Radio Relay League …


Letter Re: Results of the MURS Radio Barter Experiment

Hi Jim, Regarding the MURS Radio Barter Experiment, I had a very good response from your readers. This experiment was thought up after reading many barter articles on your blog. While this experiment might not be typical of a face-to-face bartering experience, the results were interesting nonetheless. A few offers were under valued, the majority were close enough in value to be considered, and a few were “very well valued”. Here is a sampling of what I was offered: 90% silver coins – all ranges of values were offered including “junk” coins and Silver Dollars Printing material – business cards, …


Letter Re: Which Band is Best for an Unlicensed Handheld Transceiver?

Mr. Rawles: We would like to purchase a weather band radio, plus several walkie-talkies. We want radios that don’t need a license, for use around our house and around town, as well as for up at our cabin in the U.P. [Upper Peninsula] of Michigan, which we are stocking for a retreat. (My husband is a part-time building contractor. Last summer, we made a fairly narrow windowless utility room in the cabin “vanish” by removing its door and molding and sheetrocking it. The only entrance to the room is now via a secret door at the end of a paneled …


Letter Re: Restoring Older Shortwave Receivers

James: A note on the Zenith Trans-Oceanic [tube-type general coverage receiver]s: I’ve been collecting these and refurbishing them on bad weather days. I replace all the paper and electrolytic capacitors, check the tubes, clean them up, and tune up the coil tower with an old tube RF signal generator. The paper capacitors are very prone to failure. Then I construct a replacement battery pack using ten 9 V batteries and 5 “D” cells. I plan to make a 12 VDC charger for these that I can run off my PV panels. So far I’ve done nine of these. I am …


Letter Re: Crystal Radio Sets for TEOTWAWKI

Hi Jim, Thinking about the need to catch local/regional info during a crisis and thought of the old time crystal radio sets to pick up AM radio. Many years ago kids used to build them at home or in Boy Scouts with locally available parts. Crystal radio sets are small, easy to build, easy to use, easy to repair, [JWR Adds: and just about EMP proof, if using a chunk of Galena (or piece of graphite pencil) as the detector, versus a modern germanium diode,] and require no power to operate them! While it seems that there are a lot …


Letter Re: The Last of the $49 MURS Radios

Hi Jim, Just an FYI, the remaining stock of these units [the Kenwood handheld 2 Watt MURS transceivers] is dwindling fast. I expect the $49 special to be available for only one to two more months. I have not yet found a suitable replacement product that can be sold for less than $100 and are MURS certified. On another note, I want to pass along that the customers that have been referred from your site have been excellent folks. Its been a pleasure to deal with them and they have all prompt in their payments and very reasonable to deal …


Letter Re: Rootkit Protection for Your Computer

Jim, Here is some info on what is presently a freeware application which I can quite-honestly classify as in the “Save Your Bacon” category. (it sure saved my rump, on at least one very significant occasion.) It does its’ job, it is small, and it is freeware. My conscience would bother me no end if I kept this gem to myself; perhaps you and/or the blog might benefit from this goody. – Ben L.