On 11/17/2012 11:11 AM, ZR wrote:
The question was for RG-58. Have you made tests using that and
published it?
Yes -- for RG8X, it's in the same pdf. The difference is stray
capacitance, and RG58/RG59/RG8X behave similarly, based on conductor
diameter. There CAN be some differences based on dielectric properties
outer jacket. That's what makes THHN more broadband than enameled wire.
Also the difference between Mix 31 and 43 is not great and was used
for decades successfully before 31 was introduced.
At 2 MHz, the difference is QUITE substantial, and less so at 3.5 MHz.
For the rest of HF, they are roughly equivalent, with #43 slightly
better above 20M Yes, #43 cores can be made to work on 160M, but not
nearly well for the same number of turns and/or core material. See the
measured data in the pdf.
73, Jim K9YC
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Topband reflector - topband@contesting.com
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