20 Most Recent Yukon 24021 Monocular Questions & Answers


Define 'clear'.
Is it blurry? Focus the scope or clean the lenses.
Is it distorted? Don't know how to fix. Especially if the lens is cracked/scratched etc.
Is it dark/snowy? Put fresh batteries in.
Do you see black spots in the tube? Don't worry, certain amount of these are quite acceptable.
Anyway: It's a night vision for pete's sake. The picture won't ever be like the one on normal binoculars.

Yukon 24021... | Answered on Mar 07, 2012


these units need a very small amount of light to work at all, They amplify this small amount of light, with no light at all they have nothing to amplify! the infra red is a source of light so it can amplify that, At night they amplify street lighting or moonlight or starlight etc, hope this helps,

Yukon 24021... | Answered on Sep 19, 2011


Don't IR illuminator in the dark room. Turn on a small light in one of the corner; such as, a small light bulb. increase ambient light a little at a time until you can focus. You flooding the dark room with IR illumination which will reflect everywhere in there. This might take care of the fuzziness in the monocular. stewbison

Yukon 24021... | Answered on Aug 20, 2011


Hello, take some switch cleaner--Radio Shack- and spray just a small amount into the switch. Did you installed the battery correctly with the polarity be correct. Does the battery compartment have any type of corrosion? If this does help then there is something else wron with it. stewbison

Yukon 24021... | Answered on Aug 15, 2011


You can download a manual from THIS LINK

The page is the manual in HTML, but you can download a .PDF file from a link at the top. Note that this file is named "5", and your computer won't know what kind of file it is, so you have to rename it "5.pdf" to get your PDF reader to open it.

Yukon 24021... | Answered on Nov 22, 2010


Hello, don't worry about it. It is HV to the image intensifier tube. The battery voltage goes through control circuit then to ccfl inverter (here is were dc voltage is switch on and off and switch dc voltage is step up by toroid coil that has two input and only two out puts). By impulsing the coil with two different switch dc voltage on the input this make the current lag the two different phase voltage by 90 degrees. Here is where the strange noise is coming from. The toroid coil is encased in iron case and if half of this iron case is loose, it makes case vibrate so the noise.


Now, the voltage come out of the toroid coil is switching dc (one could call it AC because that what AC voltage is, it switch between positive to negative) this voltage is about 300 to 900 switching DC voltage. This voltage will be applied to a 1/2 wave voltage multiplier (this voltage multiplier with have anywhere four four stages to 10 stages depend on what the input voltage to multiplier is.

Low the voltage out of the ccfl inverter the more stages the multiplier will have.



Now, the voltage multiplier will double the voltage per stage to need image intensifier tube voltage of 12000 to 45000 volts---DC switching or AC what ever one wants to call it. This voltage will bit you but it doesn't have a lot current associated with it, the current would be in the 10 to 15 ua (micro-amps) 1/10X6 amps.



Now, you know. GB...stewbison

Yukon Optics | Answered on Sep 24, 2011


put a dead mouse on it

Optics | Answered 5 hours ago


he i need a tripod to reflector telescop 525

Optics | Answered on Apr 14, 2019


We do not do appraisals.

Optics | Answered on Apr 14, 2019


We can't see what you have can we and it would be impossible to guess. All the models are pictured in the link

https://www.google.com/search?client=firefox-b-d&tbm=isch&q=springfield+precise+time

Optics | Answered on Apr 13, 2019

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