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Thanks Alan , Rick
There is a slope down from the top of the
Ae , the side view is about right , I
have the ideas that with the fan, the signal from
the 'back' may be lower due to screening
caused by the faraday cage , wire-ground , it
would form , but as that's directly to the
house , may be not a too bad thing , . .
The other option may be to take the top
wire on , from the anchor point , but that would be
close to the house
Tnx -G,
Sent: Tuesday, December 03, 2013 11:22 AM
Subject: LF: Re: Inv L 'FAN' top wires ?
Hi Graham, this will increase the aerial capacity
by around 100 to 120pF provided the new wires are not over/close to lossy
foliage/buildings, as the new wires are only the same length as the current
wires you will see little increase in Rrad, BUT you will see a proportional
decrease in the loss resistance. So the aerial becomes more efficient......this
assumes a flat fan not a sloping one.
Approximately, doubling the antenna capacitance
halves the Rloss which is the component determining the antenna current
you can drive and hence the ERP.
Alan
G3NYK
----- Original Message -----
Sent: Tuesday, December 03, 2013 12:20
AM
Subject: LF: Inv L 'FAN' top wires
?
Anyone tried this configuration ?
Changing single 40 ft top wire on
inv-L to a FAN
shape x3 40 Ft , spaced about 10 ft
at far end
TNx -G,
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