[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


More information about the Elecraft mailing list