[Lowfer] Medfer Antenna.

[Peter Barick]

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
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> 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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