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Astroplane 101a

rogodee

New Member
Jan 22, 2026
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Anyone have a copy of the manual, and aside from being longer ( no top hat) is there any other difference? I remember i had one i got from a cb shop years ago, but sold it long ago.
 

I think the sole reason for the hat on an Astroplane was to take advantage of the height restrictions back in the era it was originally invented,
If I was to put my astroplane back up I would remove the hat & extend the the upper radiator to 1/4wave,

I doubt Avanti ever fully understood the importance of the mast length & the importance of isolating the mast and coax at the correct distance below the hoop to get maximum performance from that design since its not in the patent.

The DB's posts about the Astroplane are by far the most informative posts on that design to be found on the WWW ;)
 

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
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    Okay, sorry, will put in a forum
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    I put it in the general disscution help area and started a new thread. Thank you for letting me know.