[Lowfer] Medfer Antenna.

[Andy - KU4XR]

That one got caught quick !!!
hi - hi 

Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29893 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr


--- On Tue, 10/27/09, Warren Ziegler <wd2xgj at gmail.com> wrote:

> From: Warren Ziegler <wd2xgj at gmail.com>
> Subject: Re: [Lowfer] Medfer Antenna.
> To: "Discussion of the Lowfer (US, European, &, UK) and MedFer bands" <lowfer at mailman.qth.net>
> Date: Tuesday, October 27, 2009, 5:12 PM
> Hi Peter,
> 
> > Given the 1 Watt input level
> 
> Actually its 0.1 Watts input (100mW).
> 
> 
> -- 
> 73 Warren K2ORS
>                
> WD2XGJ
>                
> WD2XSH/23
>                
> WE2XEB/2
>                
> WE2XGR/1
> 
> 
> 
> On Tue, Oct 27, 2009 at 5:08 PM, Peter Barick <pbarick at niu.edu>
> wrote:
> > Hi Lee,
> >
> > The MedFER band is a rarity here on the LowFER List.
> But some here do more than LFs, though haven't seen their
> responses, yet.
> >
> > I understand you wish to BC to the neighborhood only.
> Shouldn't be too hard. Some answers to your queries:
> >
> > Part-15 Regs. (as is commonly accepted here) For 1700
> KHz band, the 10 foot limit would include the "ground
> connection" wire, if used. So if ground mounted, the radials
> or GND rod/s don't count. Further it is thought that a top
> hat (one or more top radial wires that may be connected, say
> at their ends) can be thought of as a virtual disk, in a
> plane at rt. angles to the vertical member. Then that disk
> has a radius and that counts toward the real antenna length.
> Most think it wise to have a top hat for ant. efficiency.
> >
> > Keep the loading coil small. If base mounted can also
> be used to feed the ant.
> >
> > It's desirable to keep the freq. generation apparatus
> indoors and only the final at the ant. to minimize it
> counting for much in the Part-15 length parameter.
> >
> > Given the 1 Watt input level, pay attention on system
> efficiencies, loading, matching, final tuning. You'll need
> some test equipment for that.
> >
> > Cheers -- Peter
> > --------------------------------
> >
> >> Need input.  I have a small legal AM transmitter
> kit I want to put on the
> >> hi end of the AM BC band.  I have a lake house in
> a small subdivision in
> >> the country.  the subdivision is a circle you can
> walk around in a matter
> >> of a few minutes.  My house is near the middle of
> all this.  I want to
> >> legally send out AM on the transmitter with
> subdivision news.  I would
> >> suspect the diameter of the circle is around 1200
> to 1500 feet.
> > <...>
> >
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