[Lowfer] Another Antenna question

jrusgrove at comcast.net jrusgrove at comcast.net
Thu May 29 11:45:45 EDT 2008


Andy

A good source of study material to provide answer to your questions can be 
found here:

http://www.strobbe.eu/on7yd/136ant/

Jay W1VD  WD2XNS  WE2XGR/2


----- Original Message ----- 
From: "KU4XR" <ku4xr at yahoo.com>
To: <lowfer at mailman.qth.net>
Sent: Thursday, May 29, 2008 11:14 AM
Subject: [Lowfer] Another Antenna question


> Hello Fellow LOWfers:
>
> I would appreciate any experienced input on some vertical antenna issues
> for 1750 meters. " Using a vertical wire with top hat "; which would 
> radiate
> better; a shorter vertical with longer top hat, or longer vertical with
> shorter top hat ?? I would assume that the more wires you can include in
> the top hat, the better the RF will reach the top and radiate. Is this
> assumption correct or not ?? Has anyone tried hellically winding a 
> section,
> say 20 feet ( bottom , middle , top section ) so the overall heigth would 
> be
> a more one man manageable 30 feet ??. A realistic and do-able antenna for 
> me
> would be a 20 foot vertical with a 30 foot top hat which can include many 
> wires
> in different directions ( a capacitance issue only I'm sure ).
> Would ground losses be more evident with a top hat version, or the 
> straight vertical ?
> Any input will be valued and appreciated:
>
> 73, from Andy Bell - KU4XR - EM75xr
>
>
>
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