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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