[Repeater-Builder] New Repater Sytem Help!!!
We installed a small repeater system on our new fire station and are not getting the coverage we expected at all. Our antenna sits about 27m up on top of the building. The repeater is a 50watt VHF w/ duplexer. I believe it's the old coax we are using, which I think is about 15 yrs old and may have been hit by lighting in the past. If anyone can help us out it would be great!! I have many questions but for now,,, what type of coax should we get if this needs to be replaced? What about a lighting arrestor, necessary? Would a rusty, old tripod work fine or will it cause some kind of interference? and with this height, about what kind of range can we except (we use mostly 5watt portables). Thanks for the help!! We are trying to save money in our small dept by troubleshooting it the best we can before calling the pros lol. Please e-mail me w/ your advice, or questions [EMAIL PROTECTED] 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/
Re: [Repeater-Builder] New Repater Sytem Help!!!
Just so you don't have to spend more money on a new repeater after a few thunderstorms, a lightning arrestor is a must. A polyphaser is the arrestor of choice on our systems. The old feedline could be the problem as far as your coverage problems go. Some things to help determine what you problem might be are:Is there any desense between your TX and RX? What kind of antenna are you using? Terrain issue maybe?Also I would see about measuring the power out of the coax at the antenna end and do a quick calculation on what your losses are. For a VHF repeater, 1/2" Andrews Heliax is a pretty good choice for VHF for the $$. Andy Yahoo! FareChase - Search multiple travel sites in one click. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] New Repater Sytem Help!!!
I second this suggestion. I use Polyphaser arresters, and have been quite happy with them. Youll know when they take a hit. wink I also have some questions for the original poster, though. You mentioned that the antenna is about 27m up on top of the building. Did you mean 27 FEET? Afterward you asked about a rusty tripod I dont think they make them 27 METERS tall. grin Did you replace an older repeater? What brand did you settle on? Finally, why didnt the department budget to replace the infrastructure along with the repeater? Just curious. Mark N9WYS From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Andrew G. Sent: Tuesday, November 22, 2005 5:51 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] New Repater Sytem Help!!! Just so you don't have to spend more money on a new repeater after a few thunderstorms, a lightning arrestor is a must. A polyphaser is the arrestor of choice on our systems. The old feedline could be the problem as far as your coverage problems go. Some things to help determine what you problem might be are: Is there any desense between your TX and RX? What kind of antenna are you using? Terrain issue maybe? Also I would see about measuring the power out of the coax at the antenna end and do a quick calculation on what your losses are. For a VHF repeater, 1/2 Andrews Heliax is a pretty good choice for VHF for the $$. Andy Yahoo! FareChase - Search multiple travel sites in one click. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
