I have mounted the elements of a DB-224 directly to one leg of a tower with great results. All elements were mounted in-line vertically, and it provided a 3 dB offset in the pattern, but the pattern was circular, with the 3 dB offset toward the direction the elements were pointed.
73 - Jim W5ZIT --- On Tue, 6/24/08, Jim Cicirello <[EMAIL PROTECTED]> wrote: From: Jim Cicirello <[EMAIL PROTECTED]> Subject: Re: [Repeater-Builder] Reasonably low wind load antenna To: [email protected] Date: Tuesday, June 24, 2008, 10:11 AM Hi Ron Another Question Please: I was fortunate enough to buy a good DB224 without the support mast. After following the opinions on wind loading, etc. I am wondering what can be used for a support mast and where the masting might be purchased? Any ideas? Thanks JIM KA2AJH ----- Original Message ----- From: Ron Wright To: Repeater-Builder@ yahoogroups. com Sent: Tuesday, June 24, 2008 7:47 AM Subject: Re: [Repeater-Builder] Reasonably low wind load antenna Tony, First the Ringo-Ranger does not have the 7 dbi gain. To think a smaller 12 ft antenna would have about the same gain as one the size of a 4 bay dipole is not realistic. One note of info...antenna manufactures, especially from Japan, lie all the time. I would not use such harsh words except after years of this junk something needs to be said. I is said here on this board all the time for many know antenna performance here, hi. Your wind loading limits will require a smaller, lower gain antenna. If ice is a problem the Ringo-Ranger will probably not last that long. I would recommend going to www.tessco.com, a distributor of 2-way gear, and check thru their antenna section. They have a number of finnne manufactures with their specs. 73, ron, n9ee/r >From: Tony VE6MVP <[EMAIL PROTECTED] com> >Date: 2008/06/23 Mon PM 10:28:11 EDT >To: Repeater-Builder@ yahoogroups. com >Subject: [Repeater-Builder] Reasonably low wind load antenna > >Folks > >We're moving a VHF amateur repeater to a 96' Trylon self supportingtower. The overwhelming opinion is that our current 210C4 four bayfolded dipole would be too much of a weight and wind load for thattower. > >One comment has been the Ringo Ranger. The wind load of theCushcraft Ringo Ranger II ARX2Bhttp:// cushcraft. com/comm/ support/pdf/ RINGOS%20AR2% 206%2010% 20ARX450% 20220B%202B. pdfis 0.5 square feet. The windload of the Sinclar SD214 http://www.sinclair technologies. com/catalog/ resources/ pdf/SD214- HF2P3LDF(D00S-LSABK) -DI.pdf (newer model to 210C4) is 5.57 square feet. Although the ice area is 17.04 sq ft. The SD214 has a dbd gain of 7.2, dbi of 9.3. The Ringo Ranger has dbi gain of 7.0. However the coverage plot in rural slightly hilly Alberta isn't all that much different. > >What would be suggestions for an alternative? Comments? > >Thanks, Tony >(rapidly learning lots about towers and repeaters) Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
