Re: To ATU or not to ATU
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If your antennas are resonant there's no need for an ASTU, however if you are using one antenna for several bands (I'm thinking of a multiband doublet) then and ASTU is almost always mandatory. Simple rule of thumb: resonant-no ASTU, multiband largely non resonant-ASTU needed.
I've been experimenting with a 66' wire (watch for the write-up in a future edition of "The Banner"), specifically on 20m and the ASTU I'm using does not cause me any issues with attenuation of transmitted signal - that I know of. RBN was showing my CQ being picked up out in excess of 1500 miles.
Have a blessed day
Wayne - KC0PMH
On Tue, Jun 2, 2015 at 7:06 AM, Michael McEwen mcewenk5osa@... [4sqrp] <4sqrp@...> wrote:
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