[Lowfer] FW: New beacon &amp;amp; WMS off tonight

Fri Jun 3 20:49:01 EDT 2011

From: ashlockw at hotmail.com
To: k5wms at centurytel.net
Subject: RE: [Lowfer] New beacon &amp;amp;amp; WMS off tonight
Date: Fri, 3 Jun 2011 20:42:50 -0400

Paul,

My calculation indicates a transformer ratio of approx 5 to 1 for a Vcc of 13.6 and a wire gauge of 12, so you guys are on the money. If this is type 43 ferrite you might be better off with a ratio 10 to 2 or as Jay suggests ... go to a ferrite with higher permeability. Also, if possible, check the shape of the output square wave with a scope to be sure the transistors are conducting properly. I suggest in my second article to measure this on the bench with a test coil having approximately the same L and Rac as the outside loop.

Best of luck... and keep us posted.

Bill

Date: Fri, 3 Jun 2011 22:55:09 +0000
From: k5wms at centurytel.net
To: ashlockw at hotmail.com
Subject: RE: [Lowfer] New beacon &amp;amp;amp; WMS off tonight

Bill vcc is 13.6 volts( gel cell battery at the tx with trickle charger. Dave
has pictures we will send soon. I am copying daytime at 55 miles.
Paul

Quoting Bill Ashlock
:
Paul,

What is the Vcc to the final? With this value and the turns ratio I can
give you and idea how efficient the loop is running (assuming 1w DC input to the
final). BTW #12 is a my suggested gauge for a first loop because it is
relatively easy to put up, connect to, and it should put out a respectable
signal. Suggest RG-8 for the next step once the bugs are worked out and some
confidence is gained.

Bill

> Date: Fri, 3 Jun 2011
13:08:54 +0000
> From: k5wms at centurytel.net
> To:
jrusgrove at comcast.net; lowfer at mailman.qth.net
> Subject: Re: [Lowfer]
New beacon &amp; WMS off tonight
> 
> Bill and Jay,
> Conductor size is #12awg wire, core material was from crt monitor cord(

> couldnt find recommended material in Digikey) turns ratio is 5:1 or
6:1. 
> 
> I got a copy at about 0500 local time -60db,
background noise is about 
> -63 to --66db on Spectran. No copy with
ARGO. My location is very noisy 
> lately, I haven't had any luck
copying the Hifers like JD and Lawrence 
> have been doing this past
couple of weeks. 
> 
> Next step is to find correct material for
torroid and trim it up. 
> Thanks for the input Jay we didnt know what
to expect. I suppose I 
> could take my heathkit q-meter and measure it
or signal gen and rf 
> probe and try to measure Q. I need to restock
ferrite cores for other 
> projects so I will order correct core this
week. 
> 
> My prelimanary observation is the loop is much
easier to get going than 
> my verticle was. I must rethink that comment
about broad tuning. We had 
> about 6500pf fixed cap and a 500pf
variable so the perception of 
> broadness may be incorrect. There was a
definite peak. 
> 
> I reset my Spectran and am now getting
better copy at 0800cdt, we 
> expected daytime copy at this distance. 

> 
> Thaks I will keep you posted. 
> 
> Paul
k5wms
> 
> Quoting jrusgrove at comcast.net:
> > Paul
> >
> > What size is the conductor? Tuning to resonance
should be quite sharp as with
> > decent sized conductor
>
> the Q of the antenna will be well over 100. What ferrite material are 
> > you using
> > in the transformer
> > and what
is the turns ratio?
> >
> > I ran a 200' perimeter loop on
beacon VD (185.301) for a few years ... it was
> > constructed from
mil
> > spec RG-11 with full copper braid. It was hung between two
110' towers in a
> > 'diamond' configuration
> > (90
degree angle toward ground). Used an FB-1020 sized sleeve core 
> >
(will have to
> > verify ferrite mix)
> > with a 7 or 8 :
1 turns ratio. 7 or 8 turns to the transmitter and 
> > the RG-11
a
> > single pass through
> > the core. The series tuning
capacitor was made up with a bunch of DM15 silver
> > micas in
parallel with
> > a small variable cap as the 'tweaker'. 
>
>
> > Let me know if you have any questions. I'll dig out my
notes. Look forward to
> > having a go at
> > reception
.. when static subsides ... 
> >
> > Jay
>
>
> > ----- Original Message -----
> > From: "Paul
Daulton" 
> > To:

> > Sent: Thursday,
June 02, 2011 8:46 PM
> > Subject: Re: [Lowfer] New beacon & WMS
off tonight
> >
> >
> > > Jay it is ne/sw. 
Estimate 50 airline miles from me. I cant see it yet. We
> > need to
take good rec
> > > up there and see if we can see WMS. 
>
> > Loop was very easy to install. Measurement by AADE LCM meter was 
> > 86uh. Tuning
> > very broad, not
> > >
critical at all. Tx transmitter was tested here and at Daves house 
>
> with 100uh
> > coil. final
> > > resonance was
with 3x 2000pf plus 500pf plus 220pf= 6720pf total
> > >
>
> > May be this fall before we can get reports but at least it is up 
> > and running. 
> > > What kind of daytime/night time
propagation do you see on WM 
> > signals , at what
> >
distance?
> > >
> > > Paul
> > >
> > > Quoting jrusgrove at comcast.net:
> > >> Paul
> > >>
> > >> In what direction is the loop
pointed?
> > >>
> > >> Jay
> >
>>
> > >> ----- Original Message -----
> >
>> From: "Paul Daulton"

> > >> To:

> > >> Sent:
Thursday, June 02, 2011 7:23 PM
> > >> Subject: [Lowfer] New
beacon & WMS off tonight
> > >>
> > >>
> > >> >A new beacon was installed at Greers Ferry Lake near
Heber Springs
> > >> AR today. ID
> > >> is
HSA qrss30 cw,
> > >> >freq is
> > >> >
189.501 khz operating 24/7. Antenna is Ashlock loop. Beacon 
> >
belongs to Dave
> > >> Philipps WA5WKO. 
> >
>> >
> > >> > I am shutting WMS down tonight to
listen for HSA. Thanks
> > >> >
> > >> >
Paul Daulton K5WMS
> > >> > beacon WMS 185.302 khz
qrss30/slow 24/7
> > >> > Jacksonville,Ar 72076
>
> >> > em34wu
> > >> >
______________________________________________________________
> >
>> > Lowfer mailing list
> > >> > Home:
http://mailman.qth.net/mailman/listinfo/lowfer
> > >> >
Help: http://mailman.qth.net/mmfaq.htm
> > >> > Post:
mailto:Lowfer at mailman.qth.net
> > >> >
> >
>> > This list hosted by: http://www.qsl.net
> > >>
> Please help support this email list: http://www.qsl.net/donate.html
> > >>
> > >
> > > 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
>

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

[Lowfer] FW: New beacon &amp;amp;amp; WMS off tonight

[Lowfer] FW: New beacon &amp; WMS off tonight