Category: Communications & Receivers

TEOTWAWKI Signals Intelligence – Part 2, by Mike in Alaska

(Continued from Part 1. This concludes the article.) I will devote the rest of this article to a USB “dongle” type radio receiver that I have on hand, and the amazing things you can do with it. I also intend to make mention of a device called a “Tiny SA” a signal analyzer that was made more for spectrum analyzing signals on the test bench but can also be used for SIGINT as well. The USB dongle I am currently using is the RTL2832U. This is a low-price unit costing just $40. But I do advise you consider buying the …


Communications Options for the Common Man – Part 6, by Tunnel Rabbit

(Continued from Part 5. This concludes the article.) Field Phone Line Circuits: The Platoon Hot Loop This method can to be used if the layout of LP/OPs is favorable. This method of connecting phones is referred to as the Platoon Hot Loop, yet the connection can be made to string the phones together, not in a circle but all along a singe line be it straight or in a circular shape that resembles a perimeter. The ‘loop’ is actually the electrical path created the connections made in a series in the same way Christmas tree lights were once supplied with …


Communications Options for the Common Man – Part 5, by Tunnel Rabbit

(Continued from Part 4.) The Swedish M37 field telephone is an example of a good middle-of-the-road approach that is relatively lightweight, affordable, adequately durable, and mostly found to be in good operational condition.  These are not as sophisticated and suitable for silent operation as either the TA-312 or the TA-1, yet they can be fitted with a 12 VDC grain of wheat sized red LED that pulses when an incoming call is made to the phone or a peizo buzzer that softly chirps and closely duplicates the TA-312 reduced volume ‘ringer’ merely by connect either to the terminals.  Disconnect the …


Communications Options for the Common Man – Part 4, by Tunnel Rabbit

(Continued from Part 3.) Applying P.A.C.E. to a Commo Plan For every communication requirement, always have an alternative or substitute option to accomplish the same task. For example, hand and light signals and whistles are appropriate alternatives for a security operation. As a last resort, a signal fire, fog horn, or air raid siren could be for emergency communications.  However, I should let the user make the final decision.  Stay off the beaten path as much as possible and increasingly so as the threat conditions escalate.  As threats learn and evolve, so should we.  Continually improve your security operation and …


Communications Options for the Common Man – Part 3, by Tunnel Rabbit

(Continued from Part 2.) Low-Power Radio, Communications Planning, and SOI Several radio types that are relatively easy to use can used to complete a commo plan. To start, choose a primary platform such as either FRS, GMRS, MURS, or CB, and then choose an alternative to standardize on. Then select a primary and alternative channel for both your primary and alternative radio services.  Expect to be jammed and be prepared with a set of Signals Operation Instructions (SOI) so that all understand when and how to quietly switch to the alternative channel or radio service. For longer ranges, GMRS and …


Communications Options for the Common Man – Part 2, by Tunnel Rabbit

(Continued from Part 1.) I’ve busted other Ham buddies who were not FCC compliant with an embarrassing phone call.  It is a fun and a useful exercise and practice of a poor man’s version of what is referred to by the military as Signals Intelligence (SIGINT). Intelligence of any kind, from Human Intelligence (HUMINT) to SIGINT is needed, because intelligence gathering in general is essential to our security operation. Intelligence from all sources should drive our security operations.  I (and others) will be listening for radio traffic as that is the easiest form of intelligence available to the survivalist.  As …


Communications Options for the Common Man – Part 1, by Tunnel Rabbit

We live in uncertain times where tens of millions of foreign invaders comprised largely of military-aged males have recently and in organized fashion crossed our borders. They were assisted by U.S. government-funded NGOs south of the border. We certainly should wonder about their intent. And there are many other significant threats that we should be concerned with particularly as the world is rapidly becoming unstable, both economically and geopolitically. At some point in the near future, World War 3 will break out and the economy at home will suffer greatly, causing riots in the streets that would further destabilize this …


Old School Commo: EE-8 Field Phones, by Tunnel Rabbit

Because I know how easy it is to use a USB SDR Dongle (a poor man’s spectrum analyzer) to find radio transmissions, and how drones might be used to DF signals, I’d rather use hard wire field phones whenever possible, and certainly on those occasions when, or if a drone might be in my remote area. Using low-powered transceivers and directional antennas can be effective in most situations.  But in extreme situations, I would use a field phone if at all possible, and to conduct daily communications with LP/OPs, and with neighbors. Field phones are part of my commo plan …


A Simplified Disaster Network – Part 2 by J.M.

(Continued from Part 1. This concludes the article.) Synchronizing The second useful capability I wanted this solution to support is the ability for various applications I use to synchronize their data with a single ‘master’ copy. That allows multiple individuals to read, edit and update information and ensure everyone has easy access to the latest version. For example, in my article on setting up a laptop for use after a disaster I mentioned the use of tools like Obsidian and/or Joplin for managing things like intelligence information, basic note-taking, inventory management, etc. Both of these applications support the ability to …


A Simplified Disaster Network – Part 1, by J.M.

Having an operational computer network running in a post-SHTF world may seem frivolous to some people. But if you have any plans to use computers, tablets, or cell phones as part of your post-disaster operations, it can provide the capability for those devices to communicate, share data and synchronize their activities. It can also provide some support for important things like WiFi security cameras and WiFi sensor monitoring. In a previous article (parts 2, 3, 4, 5) on SurvivalBlog I discussed how to set up a mobile WiFi/Ethernet network running a local cloud server (NextCloud) in a box for use …


A Disaster Laptop Computer – Part 3, by J.M.

(Continued from Part 2. This concludes the article.) Reference Material Another useful function that computers do really well is store, manage, and interact with information. No one can remember everything, and there are a lot of sources of free or low-cost eBooks, articles, documents, manuals, etc. on the Internet that can be extremely useful for a post-disaster world. I created a folder on the 1TB microSD card on my disaster laptop named ‘Reference Material’, and here are some of the things I’ve collected and stored there: SurvivalBlog Archive – ($33) An obvious choice for SurvivalBlog readers. [JWR Adds: It also …


A Disaster Laptop Computer – Part 2, by J.M.

(Continued from Part 1.) I’ve created a list of the applications that I consider critical for supporting my post-disaster requirements. Where possible I prefer free or low-cost and open source software, but there are a couple of applications that you’re better off paying for. Note that many free or open source projects have the option to donate to their efforts – those folks invest a lot of their personal time writing and maintaining the applications, so if you find it useful please consider making a donation to help support their efforts. While I’m focusing on a Windows solution, most of …


A Disaster Laptop Computer – Part 1, by J.M.

Unless you’re already living completely self-sufficiently and off-grid, when a TEOTWAWKI scenario comes along you’re going to have to quickly adapt your lifestyle and mindset in order to survive long-term. That means bringing all of your preparations to bear, including skills, expertise, information and supplies. While you may have prepared for immediate survival, implementing a major long-term shift in your lifestyle will require an organized approach to keep track of the information, schedules and other activities you’ll need to keep going. In ‘normal’ times many of us use computers to perform these types of activities, and there’s no reason you …


OffGrid Faraday Bags, by Thomas Christianson

Faraday bags offer both privacy and protection. They protect sensitive electronic equipment from damage that might arise from EMP or Carrington-like events. They also provide privacy for equipment that can be traced or surveilled electronically. The bags block electromagnetic signals, rendering the equipment untraceable and unreadable as long as it remains encased in the bags. OffGrid Faraday Bags is a cybersecurity company that makes Faraday bags for a wide range of electronic equipment including mobile phones, tablets, notebook computers, key fobs, passports with RFID chips, and similar items. Their bags are designed for the military, law enforcement, intelligence, and personal …


Lessons From Hurricane Helene – Part 1, by A.F.

The following recounts some Hurricane Helene lessons learned from Western South Carolina. Our power went off for the final time around 5:30 on Friday morning. It had blinked on and off twice earlier in the night, but I didn’t pay the warnings any attention. In the end, we were without power for nine days and only tonight as I’m writing this, 26 days post-storm did we get our regular Internet service back. I am fully aware that these are First World problems and compared to so many, Helene took it easy on us. Beyond ensuring that our vehicles were fueled, …