[Elecraft] 80 mtr FD antenna ideas?

[Lee Buller]

HMMMMM.....  This is an interesting problem...one that I would not worry about.  You see, FD is making do with what you have....not putting together a portable contest station.  I live in Kansas...so there are not a lot of trees in my part of the state that help hold up massive antennas.  So, we make do with what we got.  The key thing to do is to RADIATE.  Personally, a Inverted Vee works FB in most circumstances.  I used them as low as 30 feet and they radiate and worked a ton of people on 80 meters.  I have use 80 meter dipoles feed with ladder line.  Works well too and can be loaded on 40 as well.  Works great.  Just get everything up as hight as you can.  I have worked KL7 and KH6 during FD using these antennas...around 4 am in the morning.  A 40 meter killer antenna is two dipoles or Inverted Vees....on a 30 foot Radio Shack type pole...and the dipoles are crossed...north and south, east and west.  In FD, a lower antenna is OK since you want to work K,W,N and VE....  So, a cloud warming antenna is better to use.
 
Lee - K0WA


Indy <kt5x@cnsp.com> wrote:
Collective brain-trust!

Planning to take our K2's out for field day again this year, but have yet to come up with a satisfying idea for an 80 meter antenna. Our circumstance:

We are on a ridge the has a steep drop off to the NE, our primary direction, but a broad top and shallow drop to the west where CA is not far away. The ridge is peppered with ponderosa pine trees mostly 30 to 40 feet tall. The drop-off has these trees, too.

I modeled on EZNEC a full sized G5RV. It does not seem to like being deployed at 35 feet, delivers a very low impedance (3 ohms!) until nearly 50 feet high. Course it is a poor ground, so maybe would do better than one would think.

Clever ideas???

72,

Fred
KT5X
K2 # 700

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