LF: "T" versus "L"aerial

["Dick Rollema" <d.w.rollema@freeler.nl>]

To All from PA0SE

Further to my e-mail of 26 December I measured the field strength as
radiated by the aerial in 
Inverted L-configuration. From this I found EMRP = 57
milliwatt.

This confirms the benificial effect of top loading. The T-aerial
radiated 140 milliwatt. 

So going from a single 20m top load wire for the "L" to 2 x 20m
for the "T" resulted in an improvement by a factor 2.46 (3.9dB)
in radiated power.  

The vertical part of the "T" consisted of an open wire feedline
of 11m with the two wires connected in parallel in the attic shack. For
the "L" one of the feedline wires was removed. I assume this
did not appreciably affect the EMRP.

73, Dick, PA0SE