Mouser.com has it listed for $18.09 in single unit quanities in case any one is
interested.
Chuck K9LC
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Jim Brown <jim@audiosystemsgroup.com>
Date: 03/26/2017 6:22 PM (GMT-06:00)
To: Rfi List <rfi@contesting.com>, towertalk reflector
<towertalk@contesting.com>
Subject: [TowerTalk] New Larger Fair-Rite #31 Toroid
KY8D asked me about a new, larger #31 toroid that has recently been
added to the catalog. It's 4-in o.d., 3-in i.d, and 1-inch long.
http://www.fair-rite.com/product/round-cable-emi-suppression-cores-2631814002/
Note the impedance data for 1, 3, and 5 turns at the bottom of the page.
Gan's email arrived today (Sunday) so I haven't had the opportunity yet
to investigate pricing. My guess is at least double the cost of the
2.4-in toroid, but because it's twice the length (1-in as opposed to
0.5-in for the 2.4-in toroid), a single core will likely be equivalent
to two of the 2.4-in cores, so fewer cores will be required to achieve
the same choking Z. More important, the much larger i.d. will allow more
turns and/or larger coax.
73, Jim K9YC
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