[Elecraft] [K3] Issue with HI CUR on 12m
Jim Brown
jim at audiosystemsgroup.com
Mon Oct 12 22:05:12 EDT 2020
On 10/12/2020 5:55 PM, Bill Coleman wrote:
> It is unlikely the balun is “breaking down”. It’s a current balun - #43 ferrite beads on RG-313 coax. It can easily handle a kW or more.
That's a common mode choke, and #43 is a terrible material for the HF
bands. See my "cookbook" at k9yc.com/publish.htm as well as the Ham's
RFI tutorial, which explains things conceptually.
"handle a kW," perhaps, but only because it's also unlikely to be doing
anything useful. :)
73, Jim K9YC
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