Kevin, I also recommend the Sinclair SRL229 having used them at my 147.180 repeater site at 11,000 Ft for over 30 years now!
I have had one apart and the radiating elements are made of solid brass rod with phasing coils between elements. The ends of the rods are drilled out for the phasing coils to be soldered in place. There is a combination of shorted stubs in the mounting base with one made out of RG142 coax and tucked up inside. The top element is attached to the lightning spike that is pushed through the top of the Radome and tightened with a nut and lockwasher. Three screws are removed at the bottom mounting pipe to remove the inside antenna elements. John Lloyd, K7JL Intermountain Intertie http://www.ussc.com/~uvhfs/snowpix1.shtml Date: Sun, 09 Jan 2005 10:49:09 -0500 From: Kevin Custer <[EMAIL PROTECTED]> Subject: Re: Re: Decibel Products DB-224 Antenna & Noise Doug Zastrow wrote: > Russ brought up the point that some techs really shy > away from the DB-224 because of the potential noise > problem. I've been scared of the fiberglass > collinears because of the element solder joint crack > issue and it's resultant noise problems. > > What's the commercial 'antenna of choice' for > two-meter repeater operation here at > Repeater-Builder? I have had excellent long-term luck with the Sinclair SRL-229. It's a large aperture (23+ foot) fiberglass radomed stick, but is not built like the stationmaster with opposing sections of large (copper water pipe) coax. I have had experience with several that have been up for 20+ years without failure in the duplex mode. I don't know how they are made internally because I have never had to take one apart. A Sinclair Engineer told me they were not made like their competition, and might possibly be solid rod with phasing coils between them. Any fiberglass radomed antenna will suffer greatly from Corona and Precipitation Static, especially when top mounted. This was a big deal until the Static Buster was developed, tested, and proven to nearly eliminate the problem. <http://www.repeater-builder.com/antenna/static.html> Kevin Custer __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
