New AMSAT member here, hoping to get on the air in the new future. I'm looking at the M2 Eggbeaters and I have a question that perhaps someone has thought about already or better yet done some modeling for. Specifically, has anyone replaced the 6 inch standoff mast on the EB-144 with something longer, and if so, how long, thus increasing the distance between the element loops and radials? (Also, would this even be possible on the EB-432 as it looks like there is no standoff mast and instead the body assembly attaches directly to the radial plate?) My thinking, perhaps faulty, is that extending the distance between the element loops and radials on both models would have the desired effect of flattening out the elevation pattern. That is, there would be less gain overhead (where satellites appear less frequently and high gain really isn't needed) but on the other hand gain would be increased in the 15-45 degree range. Has anyone modified the Eggbeaters in this way? Alternatively, has anyone modeled Eggbeaters with longer standoff masts? Is there an optimal distance for standoff masts for both models, for using satellites that are on the air at the present time? Thanks! Wes NA1ME.
Look up Texas Potato Mashers - I think that is what you are looking for. They supposedly work a lot better than Egg Beaters but even then, they are likely a poor substitute for a small beam.
Jeff Moore -- KE7ACY CN94
On Tue, Nov 19, 2019 at 10:56 AM Wes Baden via AMSAT-BB amsat-bb@amsat.org wrote:
New AMSAT member here, hoping to get on the air in the new future. I'm looking at the M2 Eggbeaters and I have a question that perhaps someone has thought about already or better yet done some modeling for. Specifically, has anyone replaced the 6 inch standoff mast on the EB-144 with something longer, and if so, how long, thus increasing the distance between the element loops and radials? (Also, would this even be possible on the EB-432 as it looks like there is no standoff mast and instead the body assembly attaches directly to the radial plate?) My thinking, perhaps faulty, is that extending the distance between the element loops and radials on both models would have the desired effect of flattening out the elevation pattern. That is, there would be less gain overhead (where satellites appear less frequently and high gain really isn't needed) but on the other hand gain would be increased in the 15-45 degree range. Has anyone modified the Eggbeaters in this way? Alternatively, has anyone modeled Eggbeaters with longer standoff masts? Is there an optimal distance for standoff masts for both models, for using satellites that are on the air at the present time? Thanks! Wes NA1ME. _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
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Jeff Moore -
Wes Baden