Bret,
Refer to the K9YC (Jim Brown) paper on RFI, Ferrites, Baluns and Audio
Interfacing for "good" baluns.
http://www.audiosystemsgroup.com/RFI-Ham.pdf.
For common mode chokes (baluns), look particularly at Chapter 7 of that
document.
A stack of 5 FT240-31 cores and a length of coax sufficient to wind 5 to
7 turns through the cores is generally less expensive (and more
effective) than the cost of commercial baluns or "in-line isolators".
73,
Don W3FPR
On 8/9/2016 5:10 PM, MaverickNH wrote:
Further (apologies, I should have thunk it through before posting):
Based on http://www.karinya.net/g3txq/chokes/ which may or may not be
well-accepted, which choke configuration would you choose for "Best"? I'm
actually fond of two chokes in series to address the 1.8-30MHz range, but am
still pondering which two? At a hefty pre-made price, one can have 160-40m &
40-10m
http://palomar-engineers.com/antenna-products/1-1-balun-kits/super-choker,
albeit with no transparency of composition. What cost of of Low SNR?
Thousands$$$ spent on Transceivers/Antennas and $100s on chokes?
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