[NLRS] Antenna Height Question

[Mike Cizek W0VTT]

Greetings,

 

Some newbie questions from an HF guy installing antennas for 2m and 222.
Both are M2 5WL Yagis (thanks Vince!).   I have two options for installing
these antennas:

1.	At 35' and 40' (more or less) on a short tower.  ~ 130' feed line
length; LDF-5
2.	At 135' and 140' at the top of a long mast sticking out of a 125'
tower. ~ 200' feed line length; LDF-5

My first thought was that since this is VHF, higher is better. (period) I
can easily put one on the short tower for testing, and plan to do that for
the sprints this month.  I modeled the antennas at both heights, and was
surprised at how similar the patterns are even with the 100' difference in
height.  The main (lowest angle) lobes are only a few degrees of elevation
and fractions of a dB apart.

 

Other than greater line-of-sight coverage, is there any real advantage to
mounting the antennas 100' higher?  My main goal is new grids for VUCC on
both bands.  

 

Thank you.

 

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73,

Mike Cizek W0VTT