On Sun,4/24/2016 2:14 PM, Roger (K8RI) on TT wrote:
What's the difference between using LMR-400, or BuryFlex with six 12"
dia Loops equally spaced, compared to bundling the same size loops
into a single bunch or for that matter, grouping any coax together
rather than equally spaced loops? It'd lower the resonant frequency,
Right.
but other than that (and looking neater), what about the choke's
characteristics?
Would it narrow the range of high impedance? Lower, raise, or leave
the maximum impedance unaffected?
In general, the peak value of Z increases as the resonance moves down,
but primarily because L and Rs are multiplied by N squared. Bunching the
turns together mostly changes C, which is mostly the C between turns.
That moves Fr down, but has little if any effect on the peak value of Z.
73, Jim K9YC
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