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Need help IDing parts

TominVA

Feb 6, 2017
14
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Feb 6, 2017
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Hi;

First post here. I inherited a lot of electronic components from a relative. Not my field and I am nearly clueless as to what I have. Dont want to throw this stuff away - half of my basement is full of it right now. Wondering if someone can help me ID these first two items so I can sell them without looking too stupid, and maybe learn something at the same time. I did try searching for them on the internet without luck. Guessing too old.

My assumption is they are simple "Crystals". Right or wrong?

First bag - labeled "3.58 MZ". Item I assumed were made in "5-86". other side says "NEL 3.579545 MHZ NE33A". Did a search for "NEL NE33A" with no luck.

2nd bag - labeled "106.00 MHZ". Marked "ERIE 2/82" and "106.00 MHZ".

Need help on what I should call these on EBay.

Please help as the wife says I have to get rid of this stuff quickly or she is going to throw it out with the garbage.

Thanks - Tom
 

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AnalogKid

Jun 10, 2015
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Yes, crystals, an electronic component that sets the frequency of an oscillator. 3.58 is a common abbreviation of 3.579545. This is the frequency of the color component of a "composite" TV signal. It is a very common part, around $1 brand new. Because of its massive use (one in every TV in the US since the 50's, and every IBM PC and clone throughout the 80's and part of the 90's) it always has been cheaper than other values, leading to its use in timer and clock circuits, etc.

106 MHz is not a common value for any communications standard I know of, which means it probably has less value than the 3.58 parts. And yes, the other numbers are date codes. There is nothing inside a crystal that ages significantly, but a part that is 30 years old might have solderability problems, one reason why parts are date-coded.

Excellent photo spread; always fun to answer a decent question.

ak
 

TominVA

Feb 6, 2017
14
Joined
Feb 6, 2017
Messages
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Great reply. Thank you.

So I'm guessing put the entire bag of 3.58 MHZ for $10, and the bag of 106 MHZ for $20 - might do it?
 

duke37

Jan 9, 2011
5,364
Joined
Jan 9, 2011
Messages
5,364
The 106MHz crystal was used in a convertor to drop the 2m band to the 10m amateur band. 144 to 146 Mhz down to 28 to 30MHz.

I do not think that many persons are making convertors these days.

Edit
My word, you have a lot.
Perhaps £10 for 10, post paid?
 

TominVA

Feb 6, 2017
14
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Feb 6, 2017
Messages
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Up on EBay now. Think there are about 500 of them, but stopped counting at 400+. All for $15 + shipping! Looking for people that want to re-sell them. Not looking to make my grand-children sell this stuff.
 

AnalogKid

Jun 10, 2015
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The 106MHz crystal was used in a convertor to drop the 2m band to the 10m amateur band. 144 to 146 Mhz down to 28 to 30MHz.
I do not think that many persons are making convertors these days.
Good answer! Learn something new every day. I wonder if the relative worked for Collins, et al.

ak
 

Herschel Peeler

Feb 21, 2016
401
Joined
Feb 21, 2016
Messages
401
Hi;

First post here. I inherited a lot of electronic components from a relative. Not my field and I am nearly clueless as to what I have. Dont want to throw this stuff away - half of my basement is full of it right now. Wondering if someone can help me ID these first two items so I can sell them without looking too stupid, and maybe learn something at the same time. I did try searching for them on the internet without luck. Guessing too old.

My assumption is they are simple "Crystals". Right or wrong?

First bag - labeled "3.58 MZ". Item I assumed were made in "5-86". other side says "NEL 3.579545 MHZ NE33A". Did a search for "NEL NE33A" with no luck.

2nd bag - labeled "106.00 MHZ". Marked "ERIE 2/82" and "106.00 MHZ".

Need help on what I should call these on EBay.

Please help as the wife says I have to get rid of this stuff quickly or she is going to throw it out with the garbage.

Thanks - Tom

Not much of a market for leaded parts these days except to schools and hobbyists.
Donate them to a school with an electronics program if you can find one and take the tax write off.
 
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