I also recommend Arrow, both for cost and service, especially for small
quantity. It helps a lot that shipping is free for an order of $20 or
more -- IF it's a web order for what's in stock. I also got a very good
price on 100 pieces of the 2.4-in o.d. #31 toroids. Other good vendors
are Lodestone Pacific, Dexter Magnetics, and the usual industrial
electronics houses like Newark, Allied, Mouser, etc.
Note also that there is currently a tariff on these parts, which are
made in Fair-Rite's factory in China.
BUT -- #61 cores are NOT of much use for RFI suppression below UHF, and
they are a terrible choice for a common mode choke (often called a
"current balun").
73, Jim K9YC
On 2/2/2019 9:04 AM, Tom WA9WSJ via RFI wrote:
Hi John,
I once bought some big cores from these guys,
https://www.jpmsupply.com
(FT140-61 ferrites). At that time, a little over a year ago, they were the best
prices I could find.
They do have a couple other types. Maybe they can help you.
Good luck!
73 Tom
On Saturday, February 2, 2019, 9:26:14 AM MST, John Altman
<wa4aip@gmail.com> wrote:
Which company is the best source for bulk bead orders?
Tks,
John
WA4AIP
ARRL Charter Life Member
Sent from my iPad PRO
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