Skipp, Thanks for the reply. As I stated, I need to maintain a low profile. There is a 2 meter & 7/8" line on the tower. The antenna is too high in frequency; therefore the return loss from the antenna is about 4dB. I have a DB-224E that I'm going to replace the one on the tower with. I also have a DB-408 & a desire to put up a 440 repeater. You can see where I'm going.
Can you recommend a good commercial diplexer? I have a Maxrad. Pictures of what you did would be helpful if it's convenient. Fred N4GER -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of skipp025 Sent: Tuesday, February 13, 2007 11:07 AM To: [email protected] Subject: [Repeater-Builder] Re: Combining antennas. > Has anyone tried to combine DB224E & DB408 on the same > mast? Well yes... I'm doing it. They use the same mast but not the same feedline. If you needed to use a common feedline I would look at a commercial diplexer first... mostly for the higher power level capacity. I've used Comet and Diamond with great results... but any bad reflected power might cause the diplexer to fail... besided the failed antenna and diplexer you had better provide protection for the PA unless you're into amplifier repairs and/or replacement. The combo ends up being a lot of metal on one mast... so you had better be ready to properly deal with the installation. The ant assembly ends up being pretty darn heavy. > If anyone has done this, did you use two feed lines or a > combiner to one feed line? I'd like to hear anyone's thoughts > on this. > Fred N4GER I didn't want to deal with the extra diplexer hardware/loss so I ran two feedlines. But I wouldn't have a problem using a good quality diplexer and upgrade the Hardline to the next size up. cheers, skipp Might have a picture of the install if you really needed to see it. s. Yahoo! Groups Links
