October 27, 2014 at 12:48 pm #27798
I was reading this article Perimeter Alarms – Low Tech Security for $20 on GunsAmerica http://www.gunsamerica.com/blog/prepping-101-perimeter-alarm/
The article has some interesting information so I started looking into other wire trip systems and found 12 Gauge Perimeter Alarm System which uses 12 GAUGE BLANK link http://www.americanspecialtyammo.com/Gadgets.html
Also found another type 12 G here http://www.pyrocreations.com/inc/sdetail/11971
All the 12G are $29.95 or more. I like the idea since if you have a small group in a SHTF you will need to rest at one point or another so having a perimeter alarm that will alert the group will help you know danger is coming.
If anyone owns one of these please read your review on them. I am looking at buying some.October 28, 2014 at 6:18 pm #27855
Here’s another take on the perimeter alarm: http://www.easydigging.com/blog/cheap-deer-alarm.html . Uses a rat trap & percussion caps, very easy and inexpensive. I saw another version that put nails thru the rat trap and put the caps on the nails then the wire bar hit the fixed caps: https://www.youtube.com/watch?v=WjoyKOMJ_9E . Since more is better, cheaper is better, if they work, these look viable.October 28, 2014 at 6:27 pm #27856
Thanks for the information. Posts like these serve as a reminder to evaluate my existing plan and see where we stand on this important topic.October 28, 2014 at 7:34 pm #27858
stingray, The rat trap and percussion caps is a good idea too and it is cheap. These are all great ideas that we need to have saved for a SHTF times.October 28, 2014 at 7:35 pm #27859
I like the simplicity of the rat trap but I think on a rainy night it might not be loud enough. I want first alarms to be 100 – 200 yards away to give me time to see and evaluate the threat without being seen. Looking at the 12 gauge alarm, I think I can make them using pipe cemented into the inside of a section of 2″ pvc pipe. I’ll see what size copper pipe can be used for a brass cartridge. i have a lot of empty brass cases that would make it easier than a 12 gauge hull.
I have 50 lb SpiderWire fishing line to use as the trip wire. It is solid dark green in color and is really hard to see in the woods or grass.
I’l take some pics when I get to it.October 28, 2014 at 7:38 pm #27860
OK 74, I would like to see your idea so take many pics. I do think this is very important.October 28, 2014 at 8:09 pm #27862
I checked a 12 Ga hull in 3/4 pvc and the dimensions are perfect. Tomorrow I’ll go to Home Depot to buy springs and a 3/4 dowel for a piston. After checking my cases that have rims, the 12 gauge is the easiest to put together.October 28, 2014 at 11:55 pm #27868
I like this! I will discuss it with my son the next time I see him. One issue for me are the numbers of critters coming through my property that might be setting them off.October 29, 2014 at 1:32 am #27871
Mtbiker, I have deer in the back that might set them off, however animals don’t have feet that project forward and catch on everything like we do, so if the line is set at about 8-10 inches off the ground I don’t think you will get that many false alarms. Plus this doesn’t need a hair trigger like a rat trap.October 29, 2014 at 10:46 am #27872
74, this concept is definitely worth looking into more. I’ll see my son the weekend after this and will talk to him about it. As for critters, I have deer coming into the yard in abundance, bears, turkeys, a bobcat, and most likely coyotes & fox that I haven’t seen but which neighbors say have taken their chickens (& with piles of feathers left on my lawn), plus whatever moves only at night that I never see.October 29, 2014 at 11:28 am #27873
Mtbiker, You should put up a few game trail cameras just for fun. Motion activated night vision cameras.October 29, 2014 at 1:11 pm #27874
I’ve thought about doing the trail cameras. A friend has one and has gotten some great shots. A bear knocked one off of the tree he had it strapped to. I’ve got a handful of deer paths coming out of the woods into my field so I know where they’re coming from.October 29, 2014 at 1:36 pm #27875
74, question the 3/4 pvc is it water pvc(white) or electrical pve(gray) because the dimensions are not the same.
MountainBiker, All of these are great ideas since in a real SHTF(EMP, Solar, Collapse) the electricity maybe turned off and batteries maybe not available anywhere. So trail cameras may not work for the long run.
74 once you set this up and test it then post it all. I like to know if the pvc will hold up. But pvc is cheap and you can make a lot of them so not really a problem.October 29, 2014 at 2:33 pm #27877
Free, white schedule 40.October 29, 2014 at 2:44 pm #27878
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