Topband: THE ITINERANT 160 METER ANTENNA PROJECT

[ZR]

OK, thanks all for that info, its obviously something I havent read altho I 
have those HB's.

Carl
KM1H


----- Original Message ----- 
From: "Dave Heil" <k8mn at frontiernet.net>
To: <topband at contesting.com>
Sent: Friday, August 03, 2012 12:44 AM
Subject: Re: Topband: THE ITINERANT 160 METER ANTENNA PROJECT


> 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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