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Re: [IRCA] [MDXC] Desert DXPedition

We turned up some troublesome results with extended Cat-5 transmission
lines that will be the basis for a follow-on report.

Did you use explosives (g)

Sincerely
Todd Skaine
Woodbury, MN
Sony ICF 2010
Toyota car radio
On May 10, 2015 8:10 AM, "'Mark Durenberger' Mark4@xxxxxxxxxxxxxxx [MDXC]" <
MDXC@xxxxxxxxxxxxxxx> wrote:

>
>
>  90-second Desert-DXPedition report:
>
> CX were excellent 042815--050215.  A LOT of time was wasted on trying to
> get good F/B on D-Kaz 140 x 22's...until we went back to the basics*****
> and THEN it really hummed.  Two D-Kaz 140 x 22 in Broadside (340-foot
> separation) produced marvelous results; heard well over a hundred stations
> not previously copied.  The real satisfaction was hearing stations down the
> bore-sight of the Broadside while the antenna rejected other Co's lots
> closer but outside of what appeared to be a nice, narrowly-focused main
> beam.
>
> Experiments with a 1000-foot MW horizontal loop were disappointing
> (likely, at 25 feet, not high enough).
>
> A 1000-foot BOG worked as BOGs usually do...though F/B nulls were not
> great.
>
> Were able to load a 30-foot vertical in such a way as to create a
> fairly-wide "sweet spot" that increased antenna sensitivity without
> creating a sharply-tuned situation.
>
> At one point we had five antennas up over a few acres of desert and did a
> lot of comparison recording.  We also "pre-swept" some antennas using a
> RigExpert Antenna Analyzer.  That showed us SWR, Reactance, Resistance,
> Phase etc.
>
> Then the winds picked up and that precluded our intended comparisons among
> two large Super-Loops and some âD-Kaz-on-steroidâ lengths with larger
> aspect ratios.  Those are now goals for the next DXPedition.
>
> Power this year was provided via *solar cells* recharging deep-cycle
> batteries that powered our lap-top-charging inverter.  (We were doing so
> much construction that we had the down-time for re-charging.)  At the Ft.
> Wayne July convention we hope to present a seminar on the RIGHT way to
> power field equipment for continuous, no-charging, low-noise operation <g>
>
> Weâll be sorting the data for months.  So far we've published a log of the
> Broadside catches (ping me if you want an Excel copy).
>
>
> *****  *We turned up some troublesome results with extended Cat-5
> transmission lines that will be the basis for a follow-on report.*
>
> Cheers!
>
> Mark Durenberger
>
>  __._,_.___
>   ------------------------------
> Posted by: "Mark Durenberger" <Mark4@xxxxxxxxxxxxxxx>
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