Topband: LU5OM shortened dipole (inverted vee) doing a nice job
na4m at suddenlink.net
Mon Jul 24 11:56:57 EDT 2017
> On Jul 24, 2017, at 1:36 PM, Steve Ireland <vk6vz at arach.net.au> wrote:
> If you have losses in the far field from poor soil conductivity, all the radials in the world and a full-size vertical can’t fix this. ;-)
Anyone care to hazard a guess as to what soil conductivity numbers might define “poor soil conductivity” for low band vertical antennas/polarization losses?
Here in central Texas with arid rocky poor soil I suspect the soil conductivity is pretty low as determined from the table in Low Band DXing.
With many years of using a 78 ft shunt-fed tower with 12-16 on ground radials on 160m I have no complaints with my results. I suspect it’s a pretty inefficient 160m radiator with high far field losses. However, with using an amp for xmit on 160m my limiting factor for success has been effective receiving.
As the same time while I’ve never used an inverted V/dipole on 160m there are 160m DX’ers in this region who have been very successful using inverted V/dipoles at moderate heights also running QRO.
73 Phil NA4M
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Phil Duff na4m[at]suddenlink[dot]net
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