[Lowfer] mp and xgj in Ar

[Paul Daulton]

Mitch I built the loop frame out of 1 inch pcv pipe, to stiffen it I 
injected foam insulation from an aerosol can into the 4 ft sections 
before assemby. ON the bottom section I slipped a length of steel 
closet rod tubing inside and a section of 1 1/4 inch pvc over that. An 
"X" fitting is at the bottom , up 4ft to another "x" fitting at 90 
degrees then up 4ft to a "Tee" fitting on top. 4 ft cross arms have 
"TEE "  fittings at the ends. Into the TEE fittings and the X fitting 
at the bottom I have 6 inch lengths of pvc with slots cut to separate 
the wire. 

I wound 14 turns of 22 ga wire( all I had)and hot metl glued it in 
place. It measured about 850 uh, this will resonate with about 900pf. I 
coupled the loop to the coax with a ft118-43 transformer, 10t primary 
and one turn sec(the loop wire passing through). While this worked 
well, it tunes very sharp , and would have to be retuned to go from 185 
to 137. The active amp works just as well and doesnt require tuning. At 
LF it didnt work well with one turn. 

Last night switching from loop to the 75m dipole I used in the past and 
my PA0rdt mini whip , your and Warrens signals were not visible on the 
random wire and mini whip. Problem is not so much the antennas as the 
noise I have picked up in the last few months. The dipole and mini whip 
are on my hf tower just outside the shack, just a few feet away is the 
remote reading power meter. I had to position the loop 100ft away at 
the other end of the house. I found a quiet spot with my Grundig 
portable. 

I complained to the power co-op about the noise, yesterday a service 
man came by and did some trouble shooting, today another is supposed to 
come by with df and ultrasonic equipment. I have broadband noise from 
lf to 5mhz. 

I am really impressed with the loop. Next project is to replace the 
small wire with some 16 ga stranded. 

73 Paul

Quoting Mitch Powell <mitch.powell at sympatico.ca>:
> Thanks Paul:
> I'm putting together another loop - and have built the M0AYF amplifier as per
> your earlier email. 
> Looks like it's working well for you. 
> 73
>
> Mitch
> On 2011-10-06, at 2:02 AM, Paul Daulton wrote:
>
> > I forgot to include time, it was captured about 10pm cdt(0300uct). 
> >
> > Quoting Paul Daulton :
> > see attached
> > Copied with Kenwood TS50 ant was 8ft dia square loop 14 turns and M0AYF
> > active amplifier. 
> > Paul Daulton K5WMS
> > beacon WMS 185.302 khz qrss30/slow 24/7
> > Jacksonville,Ar 72076
> > em34wu
> >
> > -------------------------
>
>

Paul Daulton K5WMS
beacon WMS 185.302 khz qrss30/slow 24/7
Jacksonville,Ar 72076
em34wu