DB 406 pre 1970 Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? James 10 Aug 2004 00:31:31 -0000
window.google_render_ad(); I had a DB404 (I think that was the number, two dipoles each side of the stick, 5 or 6 ft long?). This was made for 450-470 and the SWR was good at 441 (repeater output), however, I believe there was possibly a ton of uptilt as the coverage off the hill was horrible (even a diamond worked better ... I know ... don't mention that word :) ). I would test it and see how it does. James Chuck Kelsey wrote: By all means. Then you'll have your answer. Chuck WB2EDV ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, August 09, 2004 5:45 PM Subject: Re: Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? It is a folded dipole. I just checked Andrew's web site it is like the DB-411. I didn't know folded dipoles were so broad at these frequencies. I guess the next thing to do is test it out with and SWR meter. Steve WA6ZFT From: "Chuck Kelsey" <[EMAIL PROTECTED]> Date: 2004/08/09 Mon PM 05:32:44 EDT To: <[email protected]> Subject: Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? Maybe the 406 is an older model, my catalog doesn't show it. What type antenna is it? If it's a folded dipole array, you should be able to use it as is. Chuck WB2EDV ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, August 09, 2004 4:02 PM Subject: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? Regarding a DB-406 cut for 450-470MHz: How effective is it if used in the 440-450MHz region unmodified? If performace is sub-optimal, can the elements be extended, and will the phasing harness need to be lengthened? If it can be modified without being a labor of love, what's involved? (In your opinion whould it be a waste of time?) Thanks, Steve WA6ZFT --- On Sat, 3/28/09, Chuck Kelsey <[email protected]> wrote: From: Chuck Kelsey <[email protected]> Subject: Re: [Repeater-Builder] Re: What is this antenna??? To: [email protected] Date: Saturday, March 28, 2009, 4:16 PM That's how I remember them too. Chuck WB2EDV ----- Original Message ----- From: "Laryn Lohman" <lar...@hotmail. com> To: <Repeater-Builder@ yahoogroups. com> Sent: Saturday, March 28, 2009 5:02 PM Subject: [Repeater-Builder] Re: What is this antenna??? > --- In Repeater-Builder@ yahoogroups. com, "Jeff DePolo" <j...@...> wrote: >> >> >> If the elements are flat (not tubing), then it's a DB410. They stopped >> making them probably in the early 80's? > > Interesting Jeff, the DB410 pictured and described in my old DB catalog > looks EXACTLY like a modern DB420. The elements are described as being > 3/8" OD aluminum. > > Laryn K8TVZ > >
