Topband: THE ITINERANT 160 METER ANTENNA PROJECT

[Dave Heil]

Wes et al,

The claim was made in the last several editions of the Radio Handbook in 
describing a TV twinlead folded Marconi for 160m.

73,

Dave Heil K8MN

On 8/3/2012 01 18, Wes Attaway (N5WA) wrote:
> Yes, he did.  I remember the article from a long time ago.  The theme of the
> article was how you could improve efficiency by folding the element.  It
> raised the feed impedance and therefore reduced losses.  I do not have the
> article at hand but I do remember it.  If it was a QST article then it will
> be in their online archives.
>
>
> ----------------- Wes Attaway (N5WA) -------------------
> 1138 Waters Edge Circle, Shreveport, LA 71106
>      318-797-4972 (Office) - 318-393-3289 (Cell)
>          Computer Consulting and Forensics
> -------------- EnCase Certified Examiner ---------------
>
>
> -----Original Message-----
> From: topband-bounces at contesting.com [mailto:topband-bounces at contesting.com]
> On Behalf Of ZR
> Sent: Thursday, August 02, 2012 5:58 PM
> To: Tom W8JI; topband at contesting.com
> Subject: Re: Topband: THE ITINERANT 160 METER ANTENNA PROJECT
>
>
> ----- Original Message -----
> From: "Tom W8JI" <w8ji at w8ji.com>
> To: <topband at contesting.com>
> Sent: Thursday, August 02, 2012 6:21 PM
> Subject: Re: Topband: THE ITINERANT 160 METER ANTENNA PROJECT
>
>
>>> (1) 130 feet of 300 ohms twin lead with the far one end shorted and
>>> pulled up over a coconut by a local climber $5 US max and connected to a
>>> small nylon line for adjustment in an inverted or sloping fashion back
>>> to my hotel room on the beach. (without the local climber  bring along a
>>> slingshot fishing line launcher.) If the hotel wasn't right on the beach
>>> or had any 70 foot palms I just drove to another one that did. Masting
>>> anything up beyond 50 feet by yourself just forget it.  Palm trees are
>>> great substitutes.  I think this antenna was describe for 160 in Bill
>>> Orr's (W6SAI) firsts handbooks.
>>
>>
>> Just be aware Orr had a consistent mistake in his articles on folded
>> antennas. He claimed folding reduced ground losses by significant amounts.
>>
>> I'm not sure where that idea started, but using a folded element does not
>> change ground loss one bit.
>>
>> 73 Tom
>
>
> Did he actually claim that or that the effect of the ground loss was
> reduced? I dont have a reference handy.
>
> Carl
> KM1H



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