I did some research on element configuration for the DB-420 omni. Here's the reason why the DB-420 has the top 4 element pairs facing one way and the bottom four 90-degrees the other way. It was because it was easier to pack and cheaper to ship it that way.
The DB-420 can have the pairs of elements alternate by 90-degrees every other pair. There will be no difference in performance. That's how the DB-410 was configured. At some point the DB-410 became the DB-420. Now you know. Chuck WB2EDV ----- Original Message ----- From: Mike Dietrich To: [email protected] Sent: Wednesday, December 31, 2008 10:16 PM Subject: Re: [Repeater-Builder] Decibel Products Antenna website While on the subject, a DB queston for y'all. I've asked a lot of techs this over the years and have gotten as many different answers. On a DB 410/420 uhf 16 loop antenna, some were sold with the top 4 sets of elements together in a row and the bottom 4 sets were in a row but were 90 deg to the top 4. On some other antennas they were sold where each set was 90 deg from each other, ie: element sets 1,3,5,&7 were pointed together and 2,4,6,&8 were pointed together. Does anybody know the real resaon? Is one way better than the other? Do they have different patterns? Thanks and HAPPY NEW YEAR to everybody. Mike ------------------------
