[Elecraft] Off-Topic: Your advice/suggestion about antenna
Vic Rosenthal
k2vco.vic at gmail.com
Wed Mar 18 06:21:18 EDT 2020
I wonder. Wouldn’t such noise be out of phase on the two halves of the flat top and hence be rejected?
Also, the nulls will be in the same directions (although the tightness of the pattern will vary) when the antenna is operated from half its design frequency to twice that (e.g., from 40 to 10 meters).
...from someone who is using such a system with open wire feed and a Johnson Matchbox.
Victor 4X6GP
> On 18 Mar 2020, at 1:42, Jim Brown <jim at audiosystemsgroup.com> wrote:
>
> 4) A well-balanced transformer coupled tuner CAN present an open to the common mode circuit, but the rest of the feedline is still part of the antenna, so any common mode noise received on the feedline is coupled to the antenna, and from there back down the feedline as a differential signal.
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