[MRCA] field antenna

[Al Klase]

The end-fed half-wave also one of my favorites as.  It's a full 
half-wave antenna, so it radiates well.  It requires no feed line, and 
one support in the middle will pretty much do the trick for NVIS.  
Because of the high feed-point impedance, the need for a ground is quite 
minimal.  I usually chuck out a 15-20 counterpoise lying on the ground.

  I became aware of the concept from the "wire" antenna used with the 
AN/GRC-9.  The tuner in the Angry-9 was specifically set up to feed this 
kind of antenna.





I tried this with my PRC-2000 back in 2010. (See: 
http://www.mrca.ar88.net/Old%20Pages/Net/11-11-2010.html)  The built in 
tuner would tune the wire, but not load it properly, having been 
designed for the very low radiation resistance of a 10-foot whip.  
That's wen I discovered the Fuch's tuner that Zorro mentioned.

I've since discovered that my PRC-104 handles a half-wave very well.

End-Fed Half-Wave Antenna
for 75, 60, and 40 Meters

End-Fed Half-Wave

  * 120 feet of Commo (Field-Phone) Wire for 3.9 MHz.
  * Open Links for Higher Frequencies (piece of brass tubing and a
    banana plug across an insulator)
      o 40 Meters 65 Feet
      o 60 Meters 86.5 Feet
  * Insulator and Parachute Cord at Far End

My two cents,
Al


Al Klase -- N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 6/2/2014 1:44 PM, B. Smith wrote:
> My favorite field antenna is a end fed half wave, all you need is one  
> end supported . The Fuchs antenna tuner works very well and is easy to 
> build  but requires a mod for use below 4 Mcs.(which I finally figured 
> out).
>
> http://k4che.com/Ft.%20DuPont%20March%202012/Ft%20Dupont%20March%202012%20pg%202.htm 
>
>
>
> http://www.qrpproject.de/UK/fuchs_ant_.htm
>
> Z
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