Sadly, there is much evidence. Fair-rite quality really took a hit after they
moved production to Asia. So much so that many companies have had to institute
new QA procedures on incoming product to see if the characteristics come close
to fitting the requirements. One of the biggest ones is large 60Hz transformer
toroids that were failing in normal service because of the manufacturing
issues. The company does still have some non-Asia manufacturing capability, and
many companies are specifying product only from those sites.
So yes, the toroids do have issues that are very problematic.
Jack, W6FB
> On Nov 2, 2019, at 11:21 AM, David Gilbert <xdavid@cis-broadband.com> wrote:
>
>
> I find that kind of China bashing pretty funny. Ridiculous as a
> generalization.
>
> I worked for a large semiconductor manufacturer for over thirty years and we
> ended up putting a joint venture manufacturing operation in China ... not
> simply for low cost, but also to be able to serve the Asian market better and
> to be able to head off future tariff concerns within China. We spec'd our
> own equipment, we trained all the operators, and we put our own managers in
> key positions. Most of those positions are now staffed by locals. The
> resulting quality was literally best-in-class on a world basis. MANY other
> U.S., European, and even Japanese companies have done exactly the same, and
> nothing says that Fair-Rite hasn't as well.
>
> It is certainly true that many of the smaller locally owned companies in
> China have sloppy process and quality control, but companies like the large
> subcontract outfits in China put equivalent U.S. manufacturing to shame for
> overall manufacturing excellence.
>
> In the case of ferrites, the problem is the inherent variability of the
> process itself and the problem previously existed wherever the ferrites were
> previously manufactured ... including here in the U.S. Why you think the
> variability was less before the manufacturing went to China is beyond me.
> Several of us here have already explained that it wasn't.
>
> Dave AB7E
>
>
>
> On 11/2/2019 10:18 AM, Jim Thomson wrote:
>> Date: Sat, 2 Nov 2019 13:25:19 +0000 (UTC)
>> From: Roger Parsons <ve3zi@yahoo.com>
>> To: "Tower and HF Antenna Construction Topics."
>> <towertalk@contesting.com>, "jim@audiosystemsgroup.com"
>> <jim@audiosystemsgroup.com>
>> Subject: [TowerTalk] Ferrites 31 vs. 77 material
>>
>> <Very funny.
>> <The posts from both N6RK and AB7E support my statement that variability in
>> ferrite parameters has been known for a very long time. You're the one who
>> asserted that it has just been discovered and that therefore Steve G3TXQ
>> could not have known about it.
>>
>> <73 RogerVE3ZI
>>
>> ## I believe it was N3RR that bought 700, (seven hundred) type
>> 31 cores from one supplier, all from the same lot number..2 years
>> ago. He used a simple 1 turn link to test them..and then graded them.
>> They were all over the map, + and – 22%. Thats a whopping 44%
>> spread. No 2 ferrites the same! ALL made in China......so what do
>> you expect ? So much for fairite moving their factory to China. QC
>> down the tubes ever since.
>>
>> Jim VE7RF
>>
>> _______________________________________________
>>
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