In the case of the YCCC 9-circle array, which I designed, common mode
suppression is deployed at both the antenna ends of the feedlines and at the
combiner where the antenna feedlines come together. The YCCC feedpoint preamp
already includes common mode suppression, so additional feedline
alf Of Lee STRAHAN
Sent: Tuesday, November 30, 2021 2:35 PM
To: Dennis W0JX; topband@contesting.com
Subject: Re: Topband: Feedline Choke Placement in RX systems
Greetings All,
For the Hi-Z arrays any additional common mode choking for most all
installations would not be needed. You are corre
On 11/30/2021 11:34 AM, Lee STRAHAN wrote:
All my Hi-Z amps have had common mode isolation in them since day one. So
placing another choke at the Hi-Z amps seems to be not necessary.
Makes sense to me! Thanks Lee.
73, Jim K9YC
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Message-
From: Topband On Behalf Of
Dennis W0JX via Topband
Sent: Tuesday, November 30, 2021 9:48 AM
To: topband@contesting.com; John Kaufmann
Subject: Topband: Feedline Choke Placement in RX systems
K9YC made an interesting comment in his post, saying that the feedline chokes
would
The feedline (if coax) outer braid responsible for imbalance RF
radiation, is fed from the antenna end.
Choking it there eliminates a RF active length.
vk4tux
On 1/12/21 03:48, Dennis W0JX via Topband wrote:
K9YC made an interesting comment in his post, saying that the feedline chokes
K9YC made an interesting comment in his post, saying that the feedline chokes
would be most effective if placed at the antenna end of the feedline.
W1FV's 9 circle YCCC array has them right at the controller.
The older K7TJR combiner utilized no feedline chokes. However, I believe that
Lee's new
