Topband: Antennas

[Tom W8JI]

>> The so called T2FD's sold these days by the usual ham dealer suspects is
>> nowhere near the original design so its no stretch as to why its not a
>> great
>> performer.


Any antenna that increases bandwidth through a resistive termination will 
always lose a substantial portion of power as heat on bands where the 
resistive termination is correcting mismatches. There is no way around that 
problem, no matter what spacing or tilt is used.

Loss varies a great deal with frequency, but loss is the mechanism that 
corrects match on high SWR bands. No matter what exact T2FD design, loss 
(efficiency) varies significantly with frequency and some frequencies will 
be pretty sour.

The nice thing is almost anything can work DX when conditions are good.

73 Tom