[time-nuts] Simulation

Bob Camp lists at rtty.us
Sun Aug 15 01:55:40 UTC 2010


Hi

I think it was the value that changed. Somebody typo'd 10k at 10 ohms ....

Bob




On Aug 14, 2010, at 9:42 PM, "J. Forster" <jfor at quik.com> wrote:

> ??  The yellow banded R means established reliability. I see no reason why
> the NF should be any different then one w/o the yellow band. They are the
> same part, only one is tested more.
> 
> Not white band perchance?
> 
> -John
> 
> ===========
> 
> 
>> Yes, I guess it was. I have been in the military business since 1967, and,
>> certainly seen my share. Besides all of the screw ups, there was one that
>> really took the cake. I once worked for a company that had to build a
>> radio
>> that was strictly build-to-print. The original drawing had a mil-spec
>> yellow
>> band resistor of value X in the front end. Well, with that resistor the NF
>> could not be met. They could meet it with a value Y. Pleading with the
>> government reps made no difference. Finally, the head of the company QA
>> department wrote a letter to AB and actually asked them to provide
>> resistors
>> with value Y, but, color code them with the value X. Everyone signed off
>> on
>> it, and, everything was fine. I still have a copy of the letter someplace.
>> I
>> just got back from Fort Bragg where I was involved in certifying a system
>> at
>> Ka band. The antenna is a 30 footer and had only a 10 degree elevation
>> look
>> angle to see the bird needed. Well, guess what? There are three 30 foot
>> dishes in the system, the other two being Ku, and this antenna was between
>> them looking right through one of the Ku antennas. Really messed with the
>> patterns. Now, based on my input they are changing the feed assembly and
>> all
>> of the RF between the two antennas to prevent the blockage. It will take a
>> month. I am sure I will be there again. A few simple examples of hundreds.
>> - Regards - Mike
>> 
>> Mike B. Feher, N4FS
>> 89 Arnold Blvd.
>> Howell, NJ, 07731
>> 732-886-5960
>> 
>> 
>> 
>> 
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of GandalfG8 at aol.com
>> Sent: Saturday, August 14, 2010 6:52 PM
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] Simulation
>> 
>> 
>> In a message dated 14/08/2010 23:39:20 GMT Daylight Time,
>> mfeher at eozinc.com
>> writes:
>> 
>> Not that  it really matters for this thread, but, the 2N2222A was one of
>> the
>> most  common NPNs and not PNPs. As I recall, the 2N2907A was its PNP
>> complement.  - regards - Mike
>> 
>> 
>> ------------------
>> Wasn't that exactly the point that was being made?:-)
>> 
>> regards
>> 
>> Nigel
>> GM8PZR
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> 
> 
> 
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