I think the basis of these antennas is very broadband reception. Varying the distances from the elements to the reflector helps it "tune" across a wider frequency range (as does the V shape of the elements). The above is another examle of theory following design!
On Mon, Nov 16, 2009 at 6:59 AM, Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC, 53310 <meade.m.dil...@navy.mil> wrote: > I had a semester of antenna design in college. What I learned was that > most successful designs were found by trial and error, and the theory to > explain why they worked generally followed. The math in that class was > too much for me, and I was happy to get a D (for degree!) and move on to > something more suited to my lack of higher math skills... > > Max > > -----Original Message----- > From: mercedes-boun...@okiebenz.com > [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Rich Thomas > Sent: Sunday, November 15, 2009 5:36 PM > To: Mercedes Discussion List > Subject: Re: [MBZ] free circuits > > Some former science teacher in Maine designed this one from various > sources he says, posted it on instructables and Make highlighted it > (this is an outdoor one, the one you are thinking of is for indoors). > My antenna was a POS anyway, and it got whacked by a tree branch a > coupla weeks ago, so it went from bad to worse. I figured with a few > bucks worth of materials and junk I have laying around I could make a > couple (he ganged 2, I'm gonna try that too) and see if they did any > good out here in the woods. > > The hardware cloth is a reflector, and bending the fingers forward > apparently lines them up with the angled reflector. I think antennas > are all magic anyway, but I'll give it a try. When I get the other one > sorted out I'll put them on the roof and see what happens. > > --R > > Dieselhead wrote: > > Looks like an enhanced version of the Makezine one. What is the > > theory/reason for the hardware cloth on the back? I don't recall the > > makezine one calling for the coathanger sections to be bent forward. > > Does that help? > > > > > > On 11/14/09 11:09 PM, Rich Thomas wrote: > >> Look what I built this afternoon -- a new HDTV antenna > >> > >> http://s707.photobucket.com/albums/ww79/RTChoke/HDTV%20Antenna/ > >> > >> --R > >> > >> Dieselhead wrote: > >>> Wow! the alarms, controls and timers part looks llike fun. It > >>> could be dangerous! > >>> > >>> On 11/14/09 5:51 PM, Allan Streib wrote: > >>>> This could be useful... > >>>> > >>>> http://www.free-circuits.com/circuits > >>>> > >>>> Allan > >>> > >> > >> _______________________________________ > >> http://www.okiebenz.com > >> For new and used parts go to www.okiebenz.com > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > -- OK Don CONSERVATIVE, n. A statesman who is enamored of existing evils, as distinguished from the Liberal, who wishes to replace them with others. The Devil's Dictionary Ambrose Bierce _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
