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PAM127E Upgrade to AR coated sapphire crystal


yogi

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I have just received my fiddy with Upgrade to AR coated sapphire crystal it seams to have a lot of distortion in the crystal. Is this normal ??

I have done the sapphire crystal water test and compared to my gen sub looks like mineral is there any other way I can test to see if I got what I paid for

Thanks

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Is the distortion in the crystal or in the way the dial looks when viewed through the crystal? I have sapphire on my fiddy and it creates a heavy distortion of the numbers of the dial when held at angles and especially around the edges. This distortion is consistent with the gen. Besides the water test, I dunno of any other in-home methods to check the crystal. I would think that anything that is AR coated would have started as sapphire.

Edited by Sweattdogg
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Sounds normal to me and also consistant with the gen. As far as what the crystall is made of, I would guess if you bought it here on the forum and the seller is reputable, then it will be sapphire. There are devices which I have seen that tell what kind of crystal it is, but I don't know where you would even start to look for one of those.

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