On 1/15/2025 3:25 PM, ve6wz@shaw.ca wrote:
I uploaded a new YouTube video about using CAT6 as a feedline for receive
antennas.
I show how to design and make passive transformers to match the 100 Ohm pairs.
AND -- a critical part of the design of these structured cables (CAt5,
5e, 6, etc.) is that they each have a different "lay" (the technical
turn for number of turns per inch) to minimize crosstalk, so a single
CAT6 could conceivably carry signals from for antennas. And, because
they are carrying data, they also have fairly good bandwidth.
Several years ago, I published an applications note on the design of
common mode chokes for receiving antennas using a single CAT5 pair on
small ferrite cores, and for isolation transformers for RX antenna. It's
son my website, k9yc.com/publish.htm
73, Jim K9YC
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