You mite want to give the nice folks over at Cook Tower's a call the people will get on the phone with you on there toll free number and talk with you about many things to help you. Plus they stock plies of stuff if you need to buy any thing. Most of them are Hams so they know about shoe string budets. There toll free number is 877-992-2665 Make sure you ask for Kathy, AB2LF and teller you aree Ham. They give a discount to Ham's. Good luck! 73 Russ, W3CH
----- Original Message ----- From: "rtoplus" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, April 01, 2004 4:05 PM Subject: [Repeater-Builder] 2 meter antenna selection > Greetings all > > Here's the situation. Our repeater is at 146.775-. Currently, we > have a real cheapie antenna and we want to replace it. We have > somewhat of a stealth situation in that our location is within a > histerical (historical) district and our "hosts" don't want the > height of the antenna to get raised much if any at all. Total > height from ground level to antenna tip as it is now is about 100' > or so. Our hosts don't mind us increasing the girth of the antenna > or mounting system (currently we use 15' of regular television type > mast). We only have to run about 40' of 1/2 hardline from the > repeater to the antenna (we're on a rooftop). The repeater is a > MSR2000 and has a factory preamp and Sinclair Q-202G cans. As of > this last Saturday when we were up there, the receiver had about .20 > micV of sensitivity. Don't really know the loss and/or the > isolation of the duplexer...I'm sure it can be tuned better. > > We're debating between 4 different antennas to replace the junk we > have now.... > > 1. PD1167 3Dbd, 11.8' tall, fiberglass, 36deg vertical, 8 lbs > weight, having trouble finding a vendor that isn't export only, > prolly could use the existing mast, ain't sure of cost > 2. PD440-3, 11.5' tall, dipole, 3 Dbd, 33deg vertical, 19 lbs, > (would have to use a larger mast), $365.00 > 3. DB222-E, 10.5' tall, dipole, d Dbd, 36 deg vertical, 16 lbs, > (prolly have to use larger mast), $250, not exactly tuned for > 146.775, it's rated from 150-158 Mhz....courious as to the SWR and > if it would work > 4. Comtelco BS150XL3-A, 8' tall, 3Dbd, 40 deg vertical, 6 lbs, can > use the existing mast, not sure how it would work on a repeater, > $150 plus mounts > > Bear in mind, stealth is a major issue, that's why we are having to > choose from these models if we are to keep the mast height we > currently have. The existing mast is mounted against the handrail > for the walking platform of an elevator house. From the bottom of > the platform to the top of the elevator house is a bit under 10' so > the tip of the existing antenna is about 15' or so above the roof of > the elevator house. Also should mention that this area is the > piedmont area and that the repeater site (antenna tip) is prolly > 150' or so HAAT. > > Do you folks think we would be better off by: > > 1. getting some other antenna with a higher gain figure than > mentioned above (20' long or so) and reduce the mast height by about > 5 feet, and if so, what would you recommend > 2. select one of the above mentioned antennas and if so, which would > you select > 3. contract with Nextel to provide our emergency communications > 4. start collecting stamps instead of spending tons of time and $$$ > simply to help our community in times of crisis (God forbid that > happens) > > Bob, Amateur KG4WAD, GMRS WPVV845, LMRS WPXC892 > > > > > > > Yahoo! Groups Links > > > > > > 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/
