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 <[email protected]> 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 > > Sent from Mail for Windows 10 > > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
