[RFI] #73 beads

Jim Brown jim at audiosystemsgroup.com
Thu May 20 14:10:46 EDT 2021


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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