[AMRadio] AM on Ants(forgot to ID)


Brian - KF5CCN bzwiener at sbcglobal.net
Mon Jun 21 20:09:45 EDT 2010


Thanks, Jon. That is what I am going to do.

73                                             
Brian
Email: KF5CCN at ARRL.NET
Web site: KF5CCN.COM2-Way Radio Repair in Austin, TXHam Radio News Group
"Life is much too short for QRP"
   
 
            Solar X-rays:                     Geomagnetic Field:             


--- On Mon, 6/21/10, jon baker <ad5hr1 at yahoo.com> wrote:

From: jon baker <ad5hr1 at yahoo.com>
Subject: Re: [AMRadio] AM on Ants(forgot to ID)
To: "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
Date: Monday, June 21, 2010, 6:37 PM

   Brian,
   If you're space or hieght limited, put up a full-wave 80 Meter
  Loop(65 to 70 feet on each leg if square), and feed with window
  line(one inch Twinlead) or open wire(ladder -line).Mine's up 33'.
   Loads up fine with my MFJ tuner on all bands from 80 up through
  6 meters. This is the only antenna I own.
   On 160, I tie the two leads together, and feed it as a Random end-
  fed wire (90 feet of feedline) and the loop acts as a 4900 sq. ft.
  capacity hat. In the winter, I attach a couple of 1/4 wave radials
  a few inches above ground, but roll them up in the Spring. Lawn-
  mowers do not like munching a few hundred feet of 16 guage insulated
  wire. HI
   On 2 meter sideband, I use a Homebrew "hairpin" balanced line tuner,
  and have made 300 plus mile contacts with 50 Watts.
   Any of you antenna gurus care to model a 40 wavelength loop up 33
  feet?
   Some will say, this is a Cloud-Warmer, but it warms some pretty far-
  away clouds. I have DXCC confirmed on 80, 40, 20, and 15 meters, 287
  of 338 entities, 30 on 160 28 on six, and 2 on 144 Mhz in 5 years.
   A large loop makes a great all-band antenna if fed with plenty of
  low loss wire feeders, and isn't picky at all about length or shape.
   Even with only 90 Watts or so from the homebrew 75M A.M.rig I have
  no trouble "getting out" to the TX, OK,and AR stations you and I
  usually hear.
     AD5HR, Jon
     
--- On Mon, 6/21/10, Bernie Doran <qedconsultants at embarqmail.com> wrote:

> From: Bernie Doran <qedconsultants at embarqmail.com>
> Subject: Re: [AMRadio] AM on Ants(forgot to ID)
> To: kf5ccn at arrl.net, "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
> Date: Monday, June 21, 2010, 3:36 PM
> Hi Brian: you should have a great
> signal, just get that rascal up at least 
> twenty feet and you will be surprised, My power co sold me
> two new 45 Ft 
> poles and placed them for a little under $ 900 That height
> models very well 
> for all bands, yes, it is too high an angle for 80 but
> really good for 20 
> and up and certainly very usable for 80. I also found that
> if you have to go 
> through a wall, my garage with steel siding and finished
> interior wall, 
> short lengths of hardline make a great feed though. I used
> 3/4 inch and the 
> exterior is a tight fit in holes punched through the
> siding.  length is 
> about 8 inches.   I gave up on trying to get
> something in the trees!! 
> This pulls up and down in a matter of minutes if I want to
> try something 
> else. yep, 90 ft poles would be much better, but the cost
> becomes absurd, 
> several $K per pole.  open wire feeders are very easy
> to make, the round 
> clothes hangers that sell by the 50 pack make great
> spreaders. cut, drill, 
> feed the wire through,. wrap with small guage wire and
> cover the wrap with 
> RTV.  near zero loss. always best to feed in the
> center, but I am using a 
> 260 foot wire fed 60 + feet from one end.  Bernie
> ----- Original Message ----- 
> From: "Brian - KF5CCN" <bzwiener at sbcglobal.net>
> To: "Discussion of AM Radio in the Amateur Service" 
> <amradio at mailman.qth.net>
> Cc: "CL in NC" <mjcal77 at yahoo.com>
> Sent: Monday, June 21, 2010 2:34 PM
> Subject: Re: [AMRadio] AM on Ants(forgot to ID)
> 
> 
> > By the way, Maybe I did not mention this, I am putting
> out about 450 watts 
> > P.E.P. with a resting carrier of 150 watts. I am
> working on the antenna 
> > today.
> > Thanks for all your input.
> >
> > Brian
> > KF5CCN
> >
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