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" <[email protected]> To: <[email protected]> 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: [email protected] >> [mailto:[email protected]] >> On Behalf Of ZR >> Sent: Thursday, August 02, 2012 5:58 PM >> To: Tom W8JI; [email protected] >> Subject: Re: Topband: THE ITINERANT 160 METER ANTENNA PROJECT >> >> >> ----- Original Message ----- >> From: "Tom W8JI" <[email protected]> >> To: <[email protected]> >> 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 > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2197 / Virus Database: 2437/5172 - Release Date: 08/02/12 > > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2437/5173 - Release Date: 08/02/12 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
