[Repeater-Builder] Re: Passive repeaters
I agree, it depends on the building. We have a metal-skinned building 2 miles from a UHF repeater, which is working just fine. It is very difficult to access this repeater from inside this building, while the same portable can access the repeater 15-20 miles away outside. I know this answer doesn't directly address the original question, but the point here is that a perfectly fine repeater can be difficult to work from inside some buildings, no matter the distance. Laryn K8TVZ --- In Repeater-Builder@yahoogroups.com, Ralph Mowery [EMAIL PROTECTED] wrote: It all depends on the building. I work at a place that is only about 3 air miles from a 100 watt two meter repeater. If it was not for the walls I could see the repeater antenna. There is nothing wrong with the repeater system. On the second floor on the side near the repeater and only about 3 walls away from the outside I can not hear or access the repeater. Tried several HTs that are known to be working fine. I can access the repeater from atleast 10 air miles away with them. The building has lots of stainless steel panels and machinery and other big ammounts of moter control circuitry. I can walk about 30 feet to an outside door and open it and access the repeater just fine on the low power setting and even 300 miliwatts one rig puts out. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Passive repeaters
Many modern buildings are using a coated glass - if you are outside and looking at the building and at certain angles the glass looks a grey or bronze color then you have that coating. I was working in a building in downtown Los Angeles and the glass men were replacing a broken window. I could stand in the middle of the room and through the window opening see the mountain that the repeater was on and use my HT just fine (TX and RX). An hour later the glass was reinstalled and I was totally out of communications. I asked the glass guys if there was something special about the glass and they said that it was a low-E glass with an additional sunlight reflective coating. Mike WA6ILQ At 03:18 PM 12/5/03 +, you wrote: I agree, it depends on the building. We have a metal-skinned building 2 miles from a UHF repeater, which is working just fine. It is very difficult to access this repeater from inside this building, while the same portable can access the repeater 15-20 miles away outside. I know this answer doesn't directly address the original question, but the point here is that a perfectly fine repeater can be difficult to work from inside some buildings, no matter the distance. Laryn K8TVZ --- In Repeater-Builder@yahoogroups.com, Ralph Mowery [EMAIL PROTECTED] wrote: It all depends on the building. I work at a place that is only about 3 air miles from a 100 watt two meter repeater. If it was not for the walls I could see the repeater antenna. There is nothing wrong with the repeater system. On the second floor on the side near the repeater and only about 3 walls away from the outside I can not hear or access the repeater. Tried several HTs that are known to be working fine. I can access the repeater from atleast 10 air miles away with them. The building has lots of stainless steel panels and machinery and other big ammounts of moter control circuitry. I can walk about 30 feet to an outside door and open it and access the repeater just fine on the low power setting and even 300 miliwatts one rig puts out. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Passive repeaters
We joke about our building being a Faraday Cage... Same glass, with a metal roof... not much sneaking through the masonry. I have also noticed odd things regarding the same glass and it's effects on our FLIR camera... mikey At 08:13 AM 12/05/2003 -0800, you wrote: Many modern buildings are using a coated glass - if you are outside and looking at the building and at certain angles the glass looks a grey or bronze color then you have that coating. I was working in a building in downtown Los Angeles and the glass men were replacing a broken window. I could stand in the middle of the room and through the window opening see the mountain that the repeater was on and use my HT just fine (TX and RX). An hour later the glass was reinstalled and I was totally out of communications. I asked the glass guys if there was something special about the glass and they said that it was a low-E glass with an additional sunlight reflective coating. Mike WA6ILQ At 03:18 PM 12/5/03 +, you wrote: I agree, it depends on the building. We have a metal-skinned building 2 miles from a UHF repeater, which is working just fine. It is very difficult to access this repeater from inside this building, while the same portable can access the repeater 15-20 miles away outside. I know this answer doesn't directly address the original question, but the point here is that a perfectly fine repeater can be difficult to work from inside some buildings, no matter the distance. Laryn K8TVZ --- In Repeater-Builder@yahoogroups.com, Ralph Mowery [EMAIL PROTECTED] wrote: It all depends on the building. I work at a place that is only about 3 air miles from a 100 watt two meter repeater. If it was not for the walls I could see the repeater antenna. There is nothing wrong with the repeater system. On the second floor on the side near the repeater and only about 3 walls away from the outside I can not hear or access the repeater. Tried several HTs that are known to be working fine. I can access the repeater from atleast 10 air miles away with them. The building has lots of stainless steel panels and machinery and other big ammounts of moter control circuitry. I can walk about 30 feet to an outside door and open it and access the repeater just fine on the low power setting and even 300 miliwatts one rig puts out. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ - Mike PerrymanCavell, Mertz Davis, Inc. [EMAIL PROTECTED] Consulting Engineers http://www.cmdconsulting.com 7839 Ashton Avenue K5JMPManassas, VA 20109 USA (703) 392-9090; (703) 392-9559 fax; DC Line (202) 332-0110 - Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Passive repeaters
I would say the repeater system preformance is not nearly as good at it could/should be. For the most part 9 miles should be a cake walk on a well done VHF system as long as the portables have min 4 watt output. I would first turn my attention back to the repeater and antenna system. cheers skipp skipp025 at yahoo dot com chiefsfan [EMAIL PROTECTED] wrote: Our city PD is responsible for security at the airport which is 9 miles from the city and thier vhf repeater. They are having trouble getting into the repeater from inside the building but can reach ok outside the building. Does the group think a passive repeater might do the job for them with a yagi on the roof and a short piece of good quility coax and a quarter wave in the building? Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Passive repeaters
I would say the repeater system preformance is not nearly as good at it could/should be. For the most part 9 miles should be a cake walk on a well done VHF system as long as the portables have min 4 watt output. I would first turn my attention back to the repeater and antenna system. It all depends on the building. I work at a place that is only about 3 air miles from a 100 watt two meter repeater. If it was not for the walls I could see the repeater antenna. There is nothing wrong with the repeater system. On the second floor on the side near the repeater and only about 3 walls away from the outside I can not hear or access the repeater. Tried several HTs that are known to be working fine. I can access the repeater from atleast 10 air miles away with them. The building has lots of stainless steel panels and machinery and other big ammounts of moter control circuitry. I can walk about 30 feet to an outside door and open it and access the repeater just fine on the low power setting and even 300 miliwatts one rig puts out. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Passive repeaters
I agree. I'm doing that distance on UHF with lots of hills and portables running only about 1 watt. I'd be willing to bet you've got a repeater antenna problem, maybe causing desense. Chuck WB2EDV - Original Message - From: skipp025 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 04, 2003 7:07 PM Subject: [Repeater-Builder] Re: Passive repeaters I would say the repeater system preformance is not nearly as good at it could/should be. For the most part 9 miles should be a cake walk on a well done VHF system as long as the portables have min 4 watt output. I would first turn my attention back to the repeater and antenna system. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
