Mark / Netters My antenna is a twin to what you bulit. The top half of the dipole is under the glass in the vert stabalizer. The lower half is inside the section of plastic wire mold and mounted in a straight line with the other half of the dipole in as vertical a line as possible. I have three toroid baluns on the coax at the point of connection like yours and held with heat shrink. I did cut the coax at a multiple of 20.3" when terminating it at the comm radio. I also added an additional grounding sheath over the coax as suggested by Joe Horton and grounded it only at one end at the panel. I can clearly hear Akron-Canton tower and approach / departure frequencies, but an unable to contact them for a radio check. That may be due to the fact that they have a much more powerful transmitter and I'm trying to reach them with only 4 to 5 watts and located in my basement workshop. I going to leave things as they are for now and work on other things. I'll wait till the plane is out of my work shop to continue testing. Thanks to all that provided help and some good laughs. Maybe I have the flux transducer thingy in backwards..... Pete Klapp
> From: m...@n56ml.com > To: kr...@mylist.net > Date: Fri, 4 Nov 2011 17:43:45 -0500 > Subject: KR> Re: antenna length > > Pete Klapp wrote: > > >>I've read Glenn Martin's explanation for the 20.3" antenna length that you > >>used. I have no knowledge on this subject, so I'll just follow these > >>recommendations. I do have another question. Did you cut the coax to a > >>multiple of the wavelength?<< > > I did cut mine to a multiple of 20.3, and I also used the toroidal baluns > that Jim Weir recommends. I also have a friend that's an electrical engineer > and HAM radio buff drop by and check the SWR, and he said it was > perfect..."don't change a thing". > > The range of my radio is nothing short of awesome. I routinely hear > communications from 200 miles out, and have talked several times with Joe > Horton at ranges in the 175 mile range. That aint bad for a homemade antenna > made of copper foil... > > Mark Langford > ML at N56ML.com > website at http://www.N56ML.com > -------------------------------------------------------- > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
