Re: [Repeater-Builder] Re: Homebrew DB-408-Sort of...
Paul, It use to state in Part 97 damaging a Ham Radio station was an FCC violation. Think this went away with the 70s if it feels good then do it attitude and all that freedom stuff or maybe because so much equip comes from Japan. I think we owe it to Ham Radio that we monitor Carl's activities when it comes to Ham gear. Now cats I care less. Besides they eat their young. I think we should start a ASPCA chapter here. I bet we could get some gov grant, maybe from Homeland Security. They give out money for less and are very interested in radio comm. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome. On Mon, Jun 2, 2008 at 11:13 PM, Paul Plack wrote: Carl, Returning it to the scrapyard would be cruel after you already agreed to adopt it. We'd have to turn you in to the ASPCA. You know...the American Society for the Prevention of Cruelty to...Antennas. .. (Insert groan or rimshot here, as desired.) 73, Paul, AE4KR We'll see what develops .Have NO intentions ofscrapping the ant I rescued it from the scrap heapJustwouldn't be right to send it back... Hi,..Hi... Thanks for the thoughts, CarlKA9GPX
[Repeater-Builder] Re: Homebrew DB-408-Sort of...
--- In Repeater-Builder@yahoogroups.com, Dan Hancock [EMAIL PROTECTED] wrote: I saved this from previous posts a few years ago. This should help anyone re-build or modify any of the DB folded dipole antennas that use single dipole elements. The attachments are a Word doc and a PDF that should be added to the site somewhere. (hint hint) ;-] Dan N8DJP Hi Dan, Unfortunately, Your attachments are not stored by the groups e-mail system. I believe You would first have to Post them to a folder . Then everyone could Take-a Peek.I'm sorta new round these parts so I'm not quite sure if this is something you could do, or if it has to be handled through one of the moderators..BUT...You could e-mail them direct to me at the E-Mail listed Would be most interested in taking a look at the info.Like you said, Maybe it could be put in the files section 73 Carl KA9GPX
Re: [Repeater-Builder] Re: Homebrew DB-408-Sort of...
Carl, On mine, they showed up as attachments, which when I clicked on them, they opened right up. Dennis Bridgeman KCØFWN Bridgeman Communications 202 Seventh Street Carmi, IL 62821 http://bridgemancommunications.com - Original Message - From: ka9gpx To: Repeater-Builder@yahoogroups.com Sent: Tuesday, June 03, 2008 7:33 PM Subject: [Repeater-Builder] Re: Homebrew DB-408-Sort of... --- In Repeater-Builder@yahoogroups.com, Dan Hancock [EMAIL PROTECTED] wrote: I saved this from previous posts a few years ago. This should help anyone re-build or modify any of the DB folded dipole antennas that use single dipole elements. The attachments are a Word doc and a PDF that should be added to the site somewhere. (hint hint) ;-] Dan N8DJP Hi Dan, Unfortunately, Your attachments are not stored by the groups e-mail system. I believe You would first have to Post them to a folder . Then everyone could Take-a Peek.I'm sorta new round these parts so I'm not quite sure if this is something you could do, or if it has to be handled through one of the moderators..BUT...You could e-mail them direct to me at the E-Mail listed Would be most interested in taking a look at the info.Like you said, Maybe it could be put in the files section 73 Carl KA9GPX
Re: [Repeater-Builder] RE: Homebrew DB-408-Sort of...
At 6/3/2008 08:09, you wrote: I saved this from previous posts a few years ago. This should help anyone re-build or modify any of the DB folded dipole antennas that use single dipole elements. The attachments are a Word doc and a PDF that should be added to the site somewhere. (hint hint) ;-] Dan N8DJP I thought someone recently asked for the dipole feed impedance as well, so... If I'm reading the diagram right, the dipole feed impedance is 100 ohms. Bob NO6B
[Repeater-Builder] Re: Homebrew DB-408-Sort of...
I once grabbed a *bad* DB420 from a local two-way dealer's bone yard. The bottom of the main feed coax had been roached by lightning. But the top half of the antenna was fine. The top half of a DB420 is basically a DB408. It still works well to this day. Laryn K8TVZ --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey [EMAIL PROTECTED] wrote: Good luck. The harness uses a combination of 50 and 35-ohm cable. I've never seen any specifications on actual lengths, just some measurements that were made by Skip that would give you a ballpark length. I agree, even with the precise measurements (if they were to be found), weatherproofing will be a bit of a challenge. I've gotten replacement harnesses in the past. That will be your best chance. Don't scrap the antenna - you never know... Chuck WB2EDV - Original Message - From: ka9gpx [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, June 02, 2008 1:52 PM Subject: [Repeater-Builder] Homebrew DB-408-Sort of... Hello to all, I recently came across a DB-408 ant.(450-470Mhz) which was scheduled for demolition...Although the Aluminum was still in tact, The phasing harness was gone... So,...I'm wondering... Is there a practical way to build a phasing harness for the antenna??? Tried to contact Andrew, as well as some distributors,..was told the harness has been discontinued may be able to be custom ordered (sounds already too expensive ;-)but haven't recvd. a reply yet... I did a brief search on the groups site, but found nothing with enough info that would allow me to re-create this harness. Also came across Skipp's diagram of the 408 on the R-B web site, but either my poor monitor, old printer, or weak eyes, would not allow me to ascertain enough info to reproduce the harness... Although I could make out most of the dimensions, I didn't notice what type (impedance) of cable was used for it. So I guess the short of it all is...Does anyone have the information available that would allow me to rebuild this harness I know there will be issues with weatherproofing it..but right now,I'm not too concerned about that...Just hate to see such a beautiful sculpture turned into scrap... Thanks for any thoughts, Carl KA9GPX
[Repeater-Builder] Re: Homebrew DB-408-Sort of...
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey [EMAIL PROTECTED] wrote: Good luck. The harness uses a combination of 50 and 35-ohm cable. I've never seen any specifications on actual lengths, just some measurements that were made by Skip that would give you a ballpark length. Hello Chuck, Yeah , I knew it wasn't going to be simply connecting equal lengths of 50 ohm cable in parallel. I was hoping with all the knowledgeable people in the group, I might find someone that might have some experience with this. I've gotten replacement harnesses in the past. That will be your best chance. Don't scrap the antenna - you never know... We'll see what develops.Have NO intentions of scrapping the antI rescued it from the scrap heapJust wouldn't be right to send it back...Hi,..Hi... Thanks for the thoughts, Carl KA9GPX
