What do the crystal tag colors mean? - RCCanada - Canada Radio Controlled Hobby Forum
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Old 08-19-2009, 11:54 PM   #1
Claude Paradis
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What do the crystal tag colors mean?

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Hi folks,

I was going through the parts bin for some crystals this evening. I am going to change channel on a couple of my planes to increase the spread from another pilot at my field. I have a the synthesizer module in my Futaba 9C radio, so I am pretty flexible.

I have Hitec receivers. My crystals are 72 mHz.
My question is what are the differences/meanings in the color tabs on the crystal tags? I have green, blue, and a purple. As best as I can recall:

green = single conversion FM, Hitec
blue = dual conversion FM, Hitec
purple = ?????

The blue is clearly blue. The green is clearly green. Does anyone know what the purple ones are? The picture below is directly off of the hitecRCD website. Ironically it is the purple tab type I am referring to. It is neither blue, green, or red as noted on the site.


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Last edited by Claude Paradis; 08-20-2009 at 12:07 AM.
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Old 08-20-2009, 08:14 AM   #2
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Re: What do the crystal tag colors mean?

This is most likely a blue tag, just poor print quality.
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Old 08-20-2009, 11:03 AM   #3
Dale Hunter
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Re: What do the crystal tag colors mean?

I would think so aswell, come to think of it I have bought crystals for my dual conversion receivers with a bluish-purple band .
I will be watching this thread with interest to see if this is indication of something else.
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Old 09-07-2009, 12:07 AM   #4
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Re: What do the crystal tag colors mean?

This purple banded crystal is a dual conversion crystal for the Hitec receivers. The purple banded crystals that I have are genuine Hitec crystals that were purchased about 12 years ago.
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