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#1
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Is it possible to ask questions here without triggering an arcane debate
about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH |
#2
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Tom,
I tried to reply to you directly but you posted a bogus email address the email bounced. Larry, W0QE Tom Horne wrote: Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH |
#3
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On 9 Nov, 14:29, Larry Benko wrote:
Tom, I tried to reply to you directly but you posted a bogus email address the email bounced. Larry, W0QE Tom Horne wrote: Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH- Hide quoted text - - Show quoted text - He would be better off going to E ham for basic questions |
#4
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Tom Horne wrote:
Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH Larry Benko wrote: Tom, I tried to reply to you directly but you posted a bogus email address the email bounced. Larry, W0QE Larry I apologize for not checking the Verizon default newsgroup settings. Try hornetd via gmail com. And thank you for taking that time to try to answer. -- Tom Horne, W3TDH |
#5
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#6
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On Nov 9, 1:23 pm, Tom Horne wrote:
Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH All things being equal, a simple field strength meter will let you compare different antennas. Those things needing to be equal a all the test antennas are all vertical or all are horizontal. The distance from the radiating element to the pickup antenna on the FSM is always the same, the power to the antenna is the same, perhaps others, as well. Any help? Paul, KD7HB |
#7
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#8
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"Tom Horne" wrote in message
news:Md4Zi.36$WN2.29@trnddc08... Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH Tom Get together with some friends and have them drive out and assess your signal under real life conditions. Make a day of it and all get together in the evening for a social gathering and to compare notes. You really need to know whether it works okay or not, not what the 'S' meter is reading. Mike G0ULI |
#9
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Mike Kaliski wrote:
"Tom Horne" wrote in message news:Md4Zi.36$WN2.29@trnddc08... Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH Tom Get together with some friends and have them drive out and assess your signal under real life conditions. Make a day of it and all get together in the evening for a social gathering and to compare notes. You really need to know whether it works okay or not, not what the 'S' meter is reading. Mike G0ULI Mike I already own the J pole I mentioned and an Isopole for two meters. I expect to have a third two meter omni to cover APRS, Packet, and voice. I can see me throwing up each of these antennas in turn in a shopping center parking lot on a Saturday night when all the cars are gone and doing some measurements. I cannot see me rigging each in turn to the eve brackets on my house while my victims, I er mean buddies or at least they would be at first, cool their collective heals waiting for each successive test. Then there is the possibility that we may need to pre-install some sort of dual or mono band antenna at each of thirty plus fire stations and you can see why we might want to know which of the designs we can build or buy will put out the strongest signal. If I test at my home I will know which antenna works here but I'm unlikely to be called on to provide emergency communications from my home. I'd like to find out in as objective way as possible which antenna has the best chance in terms of power out to get the signal through in conditions that cannot be known in advance. -- Tom Horne -- Tom |
#10
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![]() "Tom Horne" wrote in message news:0Z9Zi.79$Y32.0@trnddc04... Mike Kaliski wrote: "Tom Horne" wrote in message news:Md4Zi.36$WN2.29@trnddc08... Is it possible to ask questions here without triggering an arcane debate about competing views of theory. I'm about to find out. I asked earlier in another thread what measuring instruments I would need to have the use of in order to compare the effective radiated power of different antennas. As near as I can tell there was no answer. I built a collinear J pole using copper tubing. I'd like to know if it is more or less effective at radiating whatever works to the stations I'd like to be able to talk to under conditions of emergency operation then say a collinear ground plane or any other omni directional antenna. I would like to deploy the most effective practical antennas that field testing can devise and not have to wait until the next breakthrough in physics to be able to get my local governments Email out to my county's government, the state government and the responding relief forces. My question, again, is what measuring instruments can be effectively applied to the comparison to provide results that will be born out by real world performance. I have to admit that I find the endless theoretical debate wearying. As long as it continuous then the newsgroup will be useless to newer licensees, like my self, who would like to get some "patient council to the beginner" from those of you who have been there and done that. Before I have to go there and do that would be soon enough. -- Tom Horne, W3TDH Tom Get together with some friends and have them drive out and assess your signal under real life conditions. Make a day of it and all get together in the evening for a social gathering and to compare notes. You really need to know whether it works okay or not, not what the 'S' meter is reading. Mike G0ULI Mike I already own the J pole I mentioned and an Isopole for two meters. I expect to have a third two meter omni to cover APRS, Packet, and voice. I can see me throwing up each of these antennas in turn in a shopping center parking lot on a Saturday night when all the cars are gone and doing some measurements. I cannot see me rigging each in turn to the eve brackets on my house while my victims, I er mean buddies or at least they would be at first, cool their collective heals waiting for each successive test. Then there is the possibility that we may need to pre-install some sort of dual or mono band antenna at each of thirty plus fire stations and you can see why we might want to know which of the designs we can build or buy will put out the strongest signal. If I test at my home I will know which antenna works here but I'm unlikely to be called on to provide emergency communications from my home. I'd like to find out in as objective way as possible which antenna has the best chance in terms of power out to get the signal through in conditions that cannot be known in advance. -- Tom Horne -- Tom Hi Tom That's a very fair comment under the circumstances. That sounds like a pretty big project you are planning. Setting up an antenna farm in a big field or car park and plotting the antenna patterns with a field strength meter, or hooking up an Icom scanner to a PC and recording the results seem like the best suggestions so far. Do remember that each site where you eventually install the antennas will have it's own characteristics. One design may not be suitable for everywhere. I personally have had very good results with a semi commercial 5/8 over 5/8 co-linear design with 6 x 24" horizontal radials at the base. The antenna is cut and tuned for the 2 metre band, but also works well on 70 Cm. Range fully quietening around 40 miles on only 5W on 2m across flat terrain with the base of the antenna 20 feet above ground. This is the most effective design I have come across for omni-directional working. The whole thing is built in a seamless fibre glass tube with the radials screwed into a ring bonded at the base of the antenna. Good luck with the project Mike G0ULI |
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