Introduction
The focus in my recent SurvivalBlog articles has been to promote communication methods, means, and technical solutions, that are easy to implement at the community level. The grassroots is where this counts most, and where it is needed most, as we will likely be on our own, and forced to be as self-sufficient as possible. In a worst-case catastrophe that we might anticipate, there will be no disaster relief agencies to assist us. Without communications of some sort, we’ve got nothing. Communications, even if limited, enable those who can to provide assistance, a local barter economy, and can be the backbone of a community’s security. One can provide better security measures for their family and closest friends, but why not have another layer that accesses some or all of the community?
In a nonpermissive and chaotic environment such as presently seen in Ukraine, we too would desperately need communications. The “Exceptionally Wide Band/Ultra High Frequency (EWB/UHF) Yagi” is my own concoction (variation of an invention). The acronym may overstate, but it sounds good, and it is mostly accurate. It is the widest-banded 3-element UHF yagi that I am aware of.
If readers can afford to step into a truly super-wide banded directional antenna, then check into a VHF or UHF Log Periodic Directional Antenna (LPDA). Here is an example of a VHF LPDA that covers 138 to 174Mhz, and claims a gain of 8Dbd. 8Dbd? No, that is not a misprint on my part. I suspect they might meant to have used Dbi, instead of Dbd. If you are asking about the price of these antennas, then you might not want know. And here is a link to a VHF/UHF line of LPDAs that advertises a price. Mine is an exceptionally wide banded yagi that costs about only a few dollars in low-cost and/or salvaged parts, and it is plenty good enough.
In the Snippets column on April 13, 2022, ‘Mike in Alaska’ provided us with a link to an outstanding overview of a situation that we might face in the future that would not be entirely unlike what is occurring in the Ukraine today: Survival Radio & Emergency Communications Ukraine. It is an excellent overview of the role that radio communications can play on several levels. Thanks Mike, it is good stuff. It spurred me on to write this article.Continue reading“Building a EWB/UHF Yagi – Part 1, by Tunnel Rabbit”