John, here are EZNEC results for your downward sloping inverted-L and your
T-vertical.
Inverted-L radiation resistance = 8 ohms
T-vertical radiation resistance = 12 ohms
How the radiation efficiency compares depends on your ground system. The
efficiencies for 2.5, 5, and 10 ohm ground systems are compared:
*Antenna GND R Rad Eff * *T over L*
L 2.5 76%
T 2.5 83% 0.4dB
L 5.0 62%
T 5.0 71% 0.6dB
L 10 44%
T 10 55% 0.9dB
L 20 29%
T 20 38% 1.2dB
Dave KH6AQ
On Mon, Mar 1, 2021 at 10:20 PM John <w5jmw@towerfarm.net> wrote:
> Hello all.I currently have a coaxial inv. L.apex at 50ft and rest going
> out at abt 45 degrees.The end is abt 20-30 ft high.It has been a very good
> antenna.I used a l because I did not have the option of 2 masts.I am
> changing a bit.Doing away from vhf/uhf beams.So I have another 50 ft
> mast.They are abt 200ft apart.My question is…Would a tee type vertical be
> better that an L.Yes I could elevate 2 or 3 radials.I am using a radial
> ground on the inv.L.Thoughts on this please.I am not really concerned about
> matching.Just effenciency.Is a tee better? Thanks,john
>
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