During the holiday break I took the opportunity to clean and assemble my KLM
10-30 LPDA. Once I had it all assembled, the tower up and folks scheduled to
help me mount it on the tower, it snowed! So I postponed mounting the
antenna on the tower and decided to make good use of the downtime by
modeling it in NEC-Win Plus.
Hopefully I've made some horrible mistake in the input data, because I
wouldn't want to put up an antenna with the results I obtained. The SWR
looks reasonable from my past experience with the antenna, but the gain
graph looks like a dipole, i.e. no F/B ratio.
I've compared my input to other LPDA designs and can't see where I went
wrong. But then again, this is my first attempt.
Is there anyone more experienced than I who would be willing to correspond
off-line about this?
Thanks
Bill KA4GAV
----------------------------------------------------------------------------
---------
Bill Turini (425) 787-4477
IT & Facilities Manager
Cypress Semiconductor - Washington Design Center
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|