From: "jannsen" <0482183881-0001@t-online.de>
To: rsgb_lf_group@blacksheep.org
References: <DDC408CAE72CD511827A0002A5131CD6D9F688@exc_wil08>
Subject: LF:Re: Loop questions
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Date: Fri, 19 Jul 2002 17:32:22 +0200
Message-ID: <17VZjy-1IGuAqC@fwd05.sul.t-online.com>
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Sender: <majordom@post.thorcom.com>

Ashlock,William schrieb:
> Hello fellow looper! 
>
> Have a few questions on your setup:
>
> >I have a loop 70m long, 12m high and 2m above ground with two windings, 
> >fed at the lower E (east) edge.
>
> >From a Feb 14 message your said you were planning a 3mm Litz loop. Does the
> above a loop have this Litz wire? Also, I am interested in the AC loss
> resistance you are measuring.
>
> I have run tests a number of loops at 185kHz with 2 to 4 turns and find the
> far field radiation is less than when I parallel the same strands together.
> The sensitivity to the wind is also less when the strands are in parallel.
> Currently my loop is a 4-wire cable with 3mm Litz (well, 3mm including the
> silk wrap) and am seeing .38 ohms AC on a 15m x 15m size (3m above gnd).
> About .22 ohm of this is soil loss. 
>
> Regarding your unusual signal propagation: I have measured the field
> strength of my loops out to 125 miles with a portable SVM and mag mount
> e-probe antenna at 100s of locations and find no unusual ups or downs in
> strength except for the std figure '8' pattern. What's weird is that one of
> the guys, 530mi from, here copies my signal (1w into loop) almost 365 days
> out of the year, but this is likely the perfect distance for a one hop skip.
>
>
> Regards,
>
> Bill Ashlock  
>
>
> >some weeks ago I made a field strength test L-aerial (17m mast and 340m 
> longwire 17m to 9m up) contra loop. 
> Geri/DK8KW measured the strength using his MV62.
> the loop is erected N/E. DK8KW is located S from here.
> result: no difference btwn the aerials as Geri reported (both 20uV/m).
> so can one say the (my) loop polarizes vertical (non directional) 
> if used as TX-aerial?
>
> vv. used as RX-antennas loop to L-antenna was -63dBu to -50dBu (indicated by
> a 
> RYCOM-rx) receiving DK8KW. 
>
> receiving Reino/OH1TN (nearly E) RYCOM indicates no 
> difference btwn the two antennas. 
>
> but Reino does not hear me if I do use the loop as TX-aerial.
> with the L-aerial conn to the TX Reino gives me regular RST 569.
>
> regards
> dj8wx/Uwe
>
Hi Bill,

pse see " qsl.net/dj8wx/00014.html "

regards
Uwe/dj8wx