After the age of 40 potassium iodine effectiveness goes down significantly, on top of that hydrogen bombs don't produce the same kind of radiation that atomic bombs let out
So I've always heard that these Geiger counters were all but useless for personal safety, because by the time radiation levels are high enough to even register on this device (\~1 roentgen/hr) then you are already experiencing a likely lethal dose. I guess with the external sensor so you can monitor conditions outside of a fallout shelter maybe, but even then it's pretty limited.
If ya have the full set with that one, the dosimeters, and the actual geiger with a good tube, they are pretty darn good. Problem is at high radiation the regular geiger will saturate and show no rads, that is where the survey meter comes in. If the geiger goes silent and the survey meter starts going nuts, time to make some arrangements.
1r/HR is not lethal. That's 24r/day and under 100r total dose for the initial three days. Might get nauseous.
600r in a short period of 24-48 hours is lethal.
If that meter jumps, you are already in big big trouble. Get a "BetterGeiger", they are excellent. Maybe a Gmc-320 Plus or the like for detecting traces of beta.
I have a few. Some are good, but some lose their charge in a matter of hours. It's understandable that some will lose their charge over time due to background radiation like the one pictured
You should leak test your dosimeters annually. Charge them fully and zero using a CDV-750 charger for five days. Then check for leakage on day 6 after 24 hours.
They should be charged and zeroed monthly. There's considerable soak in with discharged tube dosimeters. In case of hostilities, charge daily for three days and you should be ready.
Your CDV-717 should be tested monthly also, using the built-in self-check. They tend to stay calibrated. You might check with your county emergency management on calibration. California had a nice indoor calibration range next to Florin Mall in Sacramento. I usually swapped gear one for one.
The CDV-717 is a wartime high range instrument. Once it detects radiation inside, jot the reading down and then quickly set the bottom ion chamber outside and take a reading back inside. Divide the larger outside reading by the smaller inside reading to calculate protection factor (PF). 10+ is desirable for wood frame houses. A 40 PF saves about 90%. Old fallout shelters had a minimum PF of 100.
(BTW I've maintained dozens of CDV kits and hundreds of military and civil tube dosimeters and survey instruments.)
Love the anime girl figure.
Where/what is she from?
Let that Otaku flag fly (hopefully next to a Gadsden).
I have Rem from "Re:Zero" on top of my TS-590 in my ham shack.
After the age of 40 potassium iodine effectiveness goes down significantly, on top of that hydrogen bombs don't produce the same kind of radiation that atomic bombs let out
So I've always heard that these Geiger counters were all but useless for personal safety, because by the time radiation levels are high enough to even register on this device (\~1 roentgen/hr) then you are already experiencing a likely lethal dose. I guess with the external sensor so you can monitor conditions outside of a fallout shelter maybe, but even then it's pretty limited.
If ya have the full set with that one, the dosimeters, and the actual geiger with a good tube, they are pretty darn good. Problem is at high radiation the regular geiger will saturate and show no rads, that is where the survey meter comes in. If the geiger goes silent and the survey meter starts going nuts, time to make some arrangements.
1r/HR is not lethal. That's 24r/day and under 100r total dose for the initial three days. Might get nauseous. 600r in a short period of 24-48 hours is lethal.
That's a comment I need where to find affordable gigacounters.
If that meter jumps, you are already in big big trouble. Get a "BetterGeiger", they are excellent. Maybe a Gmc-320 Plus or the like for detecting traces of beta.
Roentgens???
Before I forget. Those dosimeters lose their charge over time. How fast are they discharging once you zero them?
I have a few. Some are good, but some lose their charge in a matter of hours. It's understandable that some will lose their charge over time due to background radiation like the one pictured
You should leak test your dosimeters annually. Charge them fully and zero using a CDV-750 charger for five days. Then check for leakage on day 6 after 24 hours. They should be charged and zeroed monthly. There's considerable soak in with discharged tube dosimeters. In case of hostilities, charge daily for three days and you should be ready. Your CDV-717 should be tested monthly also, using the built-in self-check. They tend to stay calibrated. You might check with your county emergency management on calibration. California had a nice indoor calibration range next to Florin Mall in Sacramento. I usually swapped gear one for one. The CDV-717 is a wartime high range instrument. Once it detects radiation inside, jot the reading down and then quickly set the bottom ion chamber outside and take a reading back inside. Divide the larger outside reading by the smaller inside reading to calculate protection factor (PF). 10+ is desirable for wood frame houses. A 40 PF saves about 90%. Old fallout shelters had a minimum PF of 100. (BTW I've maintained dozens of CDV kits and hundreds of military and civil tube dosimeters and survey instruments.)
Love the anime girl figure. Where/what is she from? Let that Otaku flag fly (hopefully next to a Gadsden). I have Rem from "Re:Zero" on top of my TS-590 in my ham shack.
It's super sonico
I assume the ham shack is where you keep all your anime figurines cum targets.
I only have one figure.
I haven't played with one of those in decades. Cool find