I wouldn't expect to learn much from this. Fair-Rite, as well as other
ferrite mfrs and vendors, markets to manufacturers who must conform to
EMC regs worldwide, and for all practical purposes, as far as their
components go, that's VHF.
In 2003, when I began my original research on EMC to audio systems, the
marketing folks who I asked for engineering samples sent me everything I
asked for, which was five pieces of several dozen parts. After 4-5
months, I asked them for 2.4-in toroids in #31, based on my initial
work, but it wasn't in the catalog, 6-8 weeks later, they called and
asked if I'd like 5 pieces of an initial sample run. The rest is
history. On the basis of that original publication (to the AES) in 2005,
and subsequent publication of k9yc.com/RFI-Ham.pdf they eventually
started publishing impedance curves for selected suppression products
for 1, 2, and 3 turns.
In 2020, when I asked for engineering samples of #75 material to
research chokes for the two new MF and LF bands, I ran into a brick
wall. Back in 2003-05, Fair-Rite was owned and run by a husband and wife
team who had started the biz, I think. She was the EE, he was the ChemE.
I met them at an IEEE EMC conference in Chicago in 2005. They retired a
year or two later, although from what I've seen online 5-10 years ago,
they (and/or their family) retained ownership. Their retirement seems to
have been the end of engineering management.
73, Jim K9YC
On 11/8/2022 5:48 AM, Hare, Ed, W1RFI wrote:
________________________________
From: Fair-Rite Products, Corp. <kaneb@fair-rite.com>
Sent: Tuesday, November 8, 2022 8:31 AM
To: Hare, Ed, W1RFI <w1rfi@arrl.org>
Subject: TODAY: Ferrites for EMI Suppression Product Demo- REGISTER TODAY!
A new webinar coming soon
[https://r20.rs6.net/on.jsp?ca=1e8ac18c-bd00-4d52-a8b8-38e31553810a&a=1124919374475&c=61d9c78c-14cc-11ed-ba73-fa163e0234d4&ch=621169b2-14cc-11ed-ba73-fa163e0234d4]
[https://files.constantcontact.com/b827b6ae501/f6b18fbf-3fb8-4304-8790-80c8316785f3.png?rdr=true]
EMC LIVE: EMC Fundamentals- Product Demo
Ferrites for EMI Suppression
[https://imgssl.constantcontact.com/letters/images/PT11834/lightbulb_top-v2.png]
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