In article ,
John Ferrell wrote:
|
| I would like to model the Channel Master CM4228HD Antenna with EZNEC.
| It looks like a good deal to me at its price.

Ken Nist (KQ6QV) has done a lot of TV antenna modelling with EZNEC,
and many of his antenna models (*.ez) are available on this page:

http://www.hdtvprimer.com/SIMS/

However, the CM4228a.ez on that page probably is the old CM4228 rather
than the new CM4228HD. His page analyzing the new CM4228HD antenna is:

http://www.hdtvprimer.com/ANTENNAS/TemporaryPage.html

His main page comparing commercially available antennas is:

http://www.hdtvprimer.com/ANTENNAS/comparing.html

Holl_ands has done a lot of modelling (using 4nec2), including the
new CM4228HD (this page has his 4nec2 model files):

http://imageevent.com/holl_ands/mult...yrefl/cm4228hd

| http://www.digitalhome.ca/forum/showthread.php?t=95467

Also on that site is an entire forum thread for modifying the
new CM4228HD:

http://www.digitalhome.ca/forum/showthread.php?t=103749

John, further searching should turn up more information and details.
AFAIR, the reflector on the new model facilitates reception on the
VHF-hi band, which may or may not be sufficient (it is, afterall,
designed for the UHF band). Too, there are a lot of DIY options...

Best Regards,
Chuck