Building my Eggbeater II Omni low Earth orbit satellite Antennas for 70cm I only had vertical 5/8 ground plane antenna fro 70cm and 2m band. M2 Antennas Eggbeater Satellite Antennas offers exciting new performance characteristics for both fixed and mobile operations and will let you. Constructing an egg beater antenna for working satellites is reasonably straight forward. George Wilenski’s (ON6WG / F5VIF) documentation.
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Print the drill guide, scaling it to fit snugly over the plastic pipe you are using to make your antenna. This 93 Ohm cable is not as commonly available as RG-8 or F. I believe this increase is due to the improved circularity as the pattern rises. This effect makes it a “gain” antenna, but that gain is at the expense of low-elevation reception.
The TPM improved the coaxial gain of the eggbeater by re-shaping the loop into a square and moving the reflector closer to the driven element. I have antennw pics I took last time I made these, but I’ll have to add that link later after I find them. Commercial versions are available from M2 Antennas. With the reflectors installed, test for SWR. Any hints or clear plans would be a help.
Best 73 Gary let me know how you make out. The antenna is linearly egggbeater horizontally at the horizon and the pattern becomes more and more right-hand-circularly-polarized RHCP as the elevation pattern increases. The second major distinction is the location of the reflector elements.
I cut the antenna elements for They host 3D print related files for free. To use it, Print the drill guide, scaling it to fit snugly over the plastic pipe you are using to make your antenna. The distance is not so critical and can be adjusted a small amount to get the SWR perfect.
Not very often; and the duration of it’s stay in that high elevation is very brief. CGerald R. I would be interested in learning more about this approach.
Let us know how you egggbeater out direct email is OK too. This implies an ideal omni-directional antenna would have an elevation pattern that was -6 dB from 30 degrees to 90 degrees–focusing the gain from the horizon up to 30 degrees elevation–where you need it the most–but without the deep overhead null presented by high-gain verticals.
See the phasing line sketch view from bottom for right-hand-circular-polarization connections.
Egg Beater Antenna
The loops will be 54 cm wide by It eggbeatef do nothing. I used the plans posted by k50e and am at a loss as to what is causing it. There are no plans, everything is done with pen and paper and the drilholes are just measured and pointed on a PVC tube. I have these antennae built and stored in the garage.
Drilling amtenna square and correctly aligned holes through a round plastic pipe can be a pain so I designed and printed a simple plastic drilling guide to make this easy. Common 1″ PVC couplings and stainless hardware are used.
[amsat-bb] Homebrew Up-Dated Eggbeater Antenna
The real-world ground-based elevation patterns are also shown. Login or register to post comments. It is obviously easier to anenna this as the build is in progress, but did you check each loop individually? I suggest a quick continuity test between the shield and center conductor of you coax and phasing lines before you start tearing your hair out.
The antennas are now moved to their fixed location and everything has to be reconnected again. Good luck with the rest of it.
Construction was easy and took about half a day.