[Moon] Rope extensions of rover yagis

Cristofori Concerts kc3re at yahoo.com
Sun Sep 30 20:58:31 CEST 2007


I have been scraching my head trying to come up with a practical way to
operate a quick-setup-takedown (and effective,) mobile EME station. 
I've worked a few stations with the single yagi configuration on both
144 and 432, have toyed with the idea of building a long rope yagi and
unwinding and aiming it somehow in short setup-takedown time, but just
came up with a new idea-rope yagi extensions of the existing single
yagis.

This seems at first view to at least have the advantage of not having
to change feedlines while out in the field (along with the usual
falling apart of connectors, freezing one's fingers in the cold
weather, etc.,) being manageable by one person, and being quick.

Would it work electrically?

On 144 I am using a 15-element K1FO.  On 432, a 28-element M2. These
are already permanently mounted on the roof of the rover and I drive it
around, ready-to-go in this configuration. 

Would it be possible to add c. 3 dB to each of these yagis (they are
about ten feet off the ground,) (double the boom length?) by tieing on
a rope extention, supporting it with a mast at the front end?

If so, does anyone have any ideas how to figure the correct
measurements/spacings for the additional directors?

Many thanks for any and all advice.  I'd love to make the rover station
much more effective so that I am not giving people headaches with
incomplete skeds.

Thanks es 73,

Martin, KC3RE







      ____________________________________________________________________________________
Shape Yahoo! in your own image.  Join our Network Research Panel today!   http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 





More information about the Moon mailing list