I have all but given up on bead designed chokes where I can. I use
FT240 cores for most choke construction now, and fall back to beads only
if physical constraints force it.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 5/20/21 11:10 AM, Jim Brown wrote:
On 5/20/2021 9:28 AM, David Hale wrote:
Are the #73 beads detrimental for the other bands?
What else might I use #73 beads for?
Nothing. W2DU's use of them for his HF chokes was a good one for the
time in which he designed them, but that was 40-50 years ago, and a lot
has changed since then. They are still suitable for HIS most robust
design (200 beads) with low power, FOR HF, but that design is no longer
the best solution.
73, Jim K9YC
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