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 Post subject: Any idea what this is?
PostPosted: Aug Fri 09, 2019 1:03 am 
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Any ideas what this is?


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 2:14 am 
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What are the other markings just out of view?

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If talk is cheap, it's because the supply usually exceeds the demand.


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 5:42 am 
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To the left is an Ohm symbol on the left just looks like a blotch


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 1:29 pm 
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Location: Sunbury, Ohio 43074
Looks like a 1 or 2 watt wire wound resistor. The ohms symbol probably confirms that

I recall one of my Heathkit builds had a few of thosr. 40 years ago +/- lol

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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 2:20 pm 
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What Barry said.

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73, de Chuck K4CCW

If talk is cheap, it's because the supply usually exceeds the demand.


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 5:54 pm 
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4079 looks like a date code, the 40 week of 1979.


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 6:23 pm 
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Joined: May Tue 30, 2006 4:46 pm
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What equipment is it from? Do you have to replace it?

I invested $20 in an MK-328, so I get a quick idea of what kind of part I have in my hand.

https://www.ebay.com/i/183416737288?chn ... -GEALw_wcB

The nice thing about these testers is that they tell you what the part is, and are right about 95% of the time.

Rich

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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 8:43 pm 
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upsss wrote:
4079 looks like a date code, the 40 week of 1979.

The format is supposed to be year then week, I've never seen the two reversed.

Obviously it isn't 1940, week 79

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 Post subject: Re: Any idea what this is?
PostPosted: Aug Fri 09, 2019 11:15 pm 
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Location: Sunbury, Ohio 43074
35Z5 wrote:
upsss wrote:
4079 looks like a date code, the 40 week of 1979.

The format is supposed to be year then week, I've never seen the two reversed.

Obviously it isn't 1940, week 79


It's 19407, week 9. 8)

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 Post subject: Re: Any idea what this is?
PostPosted: Aug Sat 10, 2019 3:32 am 
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Almost surely a resistor.

In fact I came across several just like that in my stash of “precision” resistors today while looking for replacements.

I was working on my Hickok 155, which is beginning to look like it's going to need a total resistorectomy. :|

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73, de Chuck K4CCW

If talk is cheap, it's because the supply usually exceeds the demand.


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 Post subject: Re: Any idea what this is?
PostPosted: Aug Sat 10, 2019 5:44 am 
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Joined: Sep Tue 30, 2014 6:08 am
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Location: Norfolk, VA
It's a 47 ohm 1.5 Watt Ohmite resistor, under their old system part number 4079. Ohmite made the white cylindrical resistors like that. The new resistor part number is 91J47R, or with a suffix indicating RoHS status. https://www.mouser.com/ProductDetail/Oh ... tpCOajnQ==

https://www.ohmite.com/assets/docs/old-new-crossref.pdf



You can clearly see the top of 47 (omega symbol) on the part.

Link to the Ohmite data for the old part numbered series. https://archive.org/details/bitsavers_u ... /page/n590

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"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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