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Author Topic: 630 Meter Reception - Start Cheap and Simple  (Read 5365 times)
K0OD
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Posts: 2991




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« Reply #30 on: December 05, 2017, 06:25:02 AM »

Common-Mode Chokes by Chuck Counselman, W1HIS

http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf
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N0YXB
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Posts: 1142




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« Reply #31 on: December 05, 2017, 09:19:16 AM »

Good stuff, thank you Jeff and Bob.
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K5DN
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Posts: 25




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« Reply #32 on: December 09, 2017, 08:46:46 AM »

The CM choke I am using is the Murata 50475C, which is over 10K Ohms at 475Khz.  It's an SMT part, so not so easy to handle for breadboard construction.
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KM1H
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Posts: 2666




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« Reply #33 on: December 09, 2017, 05:05:13 PM »

Quote
Common-Mode Chokes by Chuck Counselman, W1HIS

Fine at 630M but K9YC disagrees about it on the high HF bands in his common mode papers.

Carl
Former YCCC member
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