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Date: Thu, 5 Jun 2014 09:13:53 -0400
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From: Warren Ziegler <wd2xgj@gmail.com>
To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: OT HAARP lagered?
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Laurence,

   What a shame if they have to tear it down, they just finished the build
out to the full array a couple of years ago!
I was fortunate to get a tour of the site about 10 years ago as my friend
Steve W4YHD was the Chief Engineer, quite impressive! I have some photos
(35mm film, not digital) which I need to scan.  The HAARP transmitters were
true AM transmitters as they were used to heat the ionosphere and generate
e.l.f. waves by modulating the carrier with low frequency audio tones, very
inefficient (but all elf transmission schemes suffer from lack of
efficiency), ,many megawatts of HF energy used to excite milliwatts (or
perhaps microwatts?) of elf radiation from the ionosphere.
See:
http://vlf.stanford.edu/research/experiments-haarp-ionospheric-heater

    I recall that they had a Radar on site and were supposed to shut down
in case an aircraft flew through the beam. They also had an ICOM R72
receiver so they could listen before transmitting so as not to cause QRM !
 The whole lashup was powered by a series of 5 generators driven by diesel
locomotive engines.   The transmitter was actually a bunch of final
amplifiers, solid state driver and a 3cx5000 PA tube, housed in trailers
below the antenna array, each trailer housed a number of 3cx5000 PA's - the
PA's were fed by an HP synthesizer (don't recall the model #, might be in
one of my photos) and fed with equal lengths of coax so all PA's would be
in phase. There was a method to shift the phase across the array so as to
change the shape and direction of the beam. The antennas were bow-tie
dipoles broadband from 3-10MHz.  The whole thing was controlled by Sun
Sparc workstations from a master control room.  Just for fun I tuned up one
of the transmitters on 7.290 MHz AM to see if I could strap Ashtabula Bill
W8VYZ, of course it was daytime and I don't think anybody was affected!
   Was hoping to make a return trip to see the fully built out site but its
looking very questionable at the moment.

73 Warren K2ORS


On Wed, Jun 4, 2014 at 5:29 PM, Laurence KL7 L <
hellozerohellozero@hotmail.com> wrote:

>
> http://www.adn.com/2014/06/03/3500302/scientists-make-last-ditch-effort.html?sp=/99/100/&ihp=1
>
> Laurence KL7L
>
>
>


-- 
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

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<div dir=3D"ltr">Laurence,<div><br></div><div>=C2=A0 =C2=A0What a shame if =
they have to tear it down, they just finished the build out to the full arr=
ay a couple of years ago!</div><div>I was fortunate to get a tour of the si=
te about 10 years ago as my friend Steve W4YHD was the Chief Engineer, quit=
e impressive! I have some photos (35mm film, not digital) which I need to s=
can. =C2=A0The HAARP transmitters were true AM transmitters as they were us=
ed to heat the ionosphere and generate e.l.f. waves by modulating the carri=
er with low frequency audio tones, very inefficient (but all elf transmissi=
on schemes suffer from lack of efficiency), ,many megawatts of HF energy us=
ed to excite milliwatts (or perhaps microwatts?) of elf radiation from the =
ionosphere.</div>
<div>See:<br><a href=3D"http://vlf.stanford.edu/research/experiments-haarp-=
ionospheric-heater">http://vlf.stanford.edu/research/experiments-haarp-iono=
spheric-heater</a><br></div><div><br></div><div>=C2=A0 =C2=A0 I recall that=
 they had a Radar on site and were supposed to shut down in case an aircraf=
t flew through the beam. They also had an ICOM R72 receiver so they could l=
isten before transmitting so as not to cause QRM ! =C2=A0The whole lashup w=
as powered by a series of 5 generators driven by diesel locomotive engines.=
 =C2=A0 The transmitter was actually a bunch of final amplifiers, solid sta=
te driver and a 3cx5000 PA tube, housed in trailers below the antenna array=
, each trailer housed a number of 3cx5000 PA&#39;s - the PA&#39;s were fed =
by an HP synthesizer (don&#39;t recall the model #, might be in one of my p=
hotos) and fed with equal lengths of coax so all PA&#39;s would be in phase=
. There was a method to shift the phase across the array so as to change th=
e shape and direction of the beam. The antennas were bow-tie dipoles broadb=
and from 3-10MHz. =C2=A0The whole thing was controlled by Sun Sparc worksta=
tions from a master control room. =C2=A0Just for fun I tuned up one of the =
transmitters on 7.290 MHz AM to see if I could strap Ashtabula Bill W8VYZ, =
of course it was daytime and I don&#39;t think anybody was affected!</div>
<div>=C2=A0 =C2=A0Was hoping to make a return trip to see the fully built o=
ut site but its looking very questionable at the moment.</div><div><br></di=
v><div>73 Warren K2ORS</div></div><div class=3D"gmail_extra"><br><br><div c=
lass=3D"gmail_quote">
On Wed, Jun 4, 2014 at 5:29 PM, Laurence KL7 L <span dir=3D"ltr">&lt;<a hre=
f=3D"mailto:hellozerohellozero@hotmail.com" target=3D"_blank">hellozerohell=
ozero@hotmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">


<div><div dir=3D"ltr"><a href=3D"http://www.adn.com/2014/06/03/3500302/scie=
ntists-make-last-ditch-effort.html?sp=3D/99/100/&amp;ihp=3D1" target=3D"_bl=
ank">http://www.adn.com/2014/06/03/3500302/scientists-make-last-ditch-effor=
t.html?sp=3D/99/100/&amp;ihp=3D1</a><br>
=C2=A0<br>Laurence KL7L<br>=C2=A0<br>=C2=A0<br> 		 	   		  </div></div>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>73 Warren K2=
ORS<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XGJ <br>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XSH/23<br>=C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XEB/2<br>=C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XGR/1<br><br>=C2=A0
</div>

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