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#1
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I have one of these, and while I'm not expert, it does a wonderful job for
me. I've never used a discone, so I have no way to compare the two... However, you can buy this antenna from other sources for HALF (or a little more than half) the price they want at the site that was originally linked to... http://www.starkelectronic.com/acantena.htm#ST2 http://www.valcoelectronics.com/scanner/scanner.htm http://www.radiooutfitter.com/store/ST2.html http://www.warrenelectronics.com/antennas/scanner_1.htm http://www.universal-radio.com/catal...ants/2732.html "BDK" wrote in message ... In article ers.com, says... I need some help choosing an antenna for my base station police scanner. any suggestion (pros or cons) would be appreciated This is what you want. Will blow away about any other omni antenna out there. Light years ahead of a discone. http://users.cis.net/kingpop/Scanner/Scantenna.htm BDK |
#2
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Too bad the ST-2 omits the milair freqs :~( I almost ordered one till I
read a DETAILED frequency coverage (30-50, 148-174, 440-470, 470-512, 800-912 MHz) Most stores list it as 30-1300 which isn't quite the same... "PowerHouse Communications" wrote in message ... I have one of these, and while I'm not expert, it does a wonderful job for me. I've never used a discone, so I have no way to compare the two... However, you can buy this antenna from other sources for HALF (or a little more than half) the price they want at the site that was originally linked to... http://www.starkelectronic.com/acantena.htm#ST2 http://www.valcoelectronics.com/scanner/scanner.htm http://www.radiooutfitter.com/store/ST2.html http://www.warrenelectronics.com/antennas/scanner_1.htm http://www.universal-radio.com/catal...ants/2732.html "BDK" wrote in message ... In article ers.com, says... I need some help choosing an antenna for my base station police scanner. any suggestion (pros or cons) would be appreciated This is what you want. Will blow away about any other omni antenna out there. Light years ahead of a discone. http://users.cis.net/kingpop/Scanner/Scantenna.htm BDK |
#3
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![]() This is what you want. Will blow away about any other omni antenna out there. Light years ahead of a discone. http://users.cis.net/kingpop/Scanner/Scantenna.htm BDK ------------------------------------------------------------------------------- Not quite light years ahead of a discone. Last year I put up a discone on one side of my house and a ST 2 on the other side, fed them both with RG 6U double shielded. Had them feeding a Yaesu VR 5000 alternately. The discone was the one that had the vertical element on top. On 30-50 I could tell no difference between the 2. But I could use the discone on 6 meter fm with a 1.9-1 swr. on 148-170 they appeared to be the same. On some freqs the ST 2 was a tad, and I mean a tad better. ON other signals in VHF (i.e.144mhz ssb amateur) the discone picked up distant ssb chatter while the ST 2 picked up nothing. On the discone I can use on 2 mtr. fm with almost a flat swr. On 440-470 they apeared to be the same for all intent. Although I can use the discone on 440 fm with a 1.5-1 or so swr. On the 470-512 area there is nothing to listen to around here so thats a wash. But on 800-912mhz the discone worked quite well and is somewhat resonant there, while the ST 2 seemed to be about deaf in this area. If you live in an area that gets freezing rain and wind, even the new improved ST 2 will not last. Its too fragile. I have never had a discone come down. After my tests I took down the ST 2 and sold it, and still have up the discone. There is no substitute for being resonant at various points on a freq plot. The ST 2 basically fakes the radio as far as impededance with the 300 ohm transformer. It hardly blows the discone out of the water, like I hear so often. Advertising hype. Jeff |
#4
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However it is half the price and includes the feed line and shipping.
It seems by the reports for monitoring the basics its a appropriate antenna Doug "Jeff" wrote in message news:U060d.158329$Fg5.72937@attbi_s53... This is what you want. Will blow away about any other omni antenna out there. Light years ahead of a discone. http://users.cis.net/kingpop/Scanner/Scantenna.htm BDK -------------------------------------------------------------------------- ----- Not quite light years ahead of a discone. Last year I put up a discone on one side of my house and a ST 2 on the other side, fed them both with RG 6U double shielded. Had them feeding a Yaesu VR 5000 alternately. The discone was the one that had the vertical element on top. On 30-50 I could tell no difference between the 2. But I could use the discone on 6 meter fm with a 1.9-1 swr. on 148-170 they appeared to be the same. On some freqs the ST 2 was a tad, and I mean a tad better. ON other signals in VHF (i.e.144mhz ssb amateur) the discone picked up distant ssb chatter while the ST 2 picked up nothing. On the discone I can use on 2 mtr. fm with almost a flat swr. On 440-470 they apeared to be the same for all intent. Although I can use the discone on 440 fm with a 1.5-1 or so swr. On the 470-512 area there is nothing to listen to around here so thats a wash. But on 800-912mhz the discone worked quite well and is somewhat resonant there, while the ST 2 seemed to be about deaf in this area. If you live in an area that gets freezing rain and wind, even the new improved ST 2 will not last. Its too fragile. I have never had a discone come down. After my tests I took down the ST 2 and sold it, and still have up the discone. There is no substitute for being resonant at various points on a freq plot. The ST 2 basically fakes the radio as far as impededance with the 300 ohm transformer. It hardly blows the discone out of the water, like I hear so often. Advertising hype. Jeff |
#5
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In article U060d.158329$Fg5.72937@attbi_s53, "Jeff" oldog@(nospam)
mchsi.com says... This is what you want. Will blow away about any other omni antenna out there. Light years ahead of a discone. http://users.cis.net/kingpop/Scanner/Scantenna.htm BDK ------------------------------------------------------------------------------- Not quite light years ahead of a discone. Last year I put up a discone on one side of my house and a ST 2 on the other side, fed them both with RG 6U double shielded. Had them feeding a Yaesu VR 5000 alternately. The discone was the one that had the vertical element on top. On 30-50 I could tell no difference between the 2. But I could use the discone on 6 meter fm with a 1.9-1 swr. on 148-170 they appeared to be the same. On some freqs the ST 2 was a tad, and I mean a tad better. ON other signals in VHF (i.e.144mhz ssb amateur) the discone picked up distant ssb chatter while the ST 2 picked up nothing. On the discone I can use on 2 mtr. fm with almost a flat swr. On 440-470 they apeared to be the same for all intent. Although I can use the discone on 440 fm with a 1.5-1 or so swr. On the 470-512 area there is nothing to listen to around here so thats a wash. But on 800-912mhz the discone worked quite well and is somewhat resonant there, while the ST 2 seemed to be about deaf in this area. If you live in an area that gets freezing rain and wind, even the new improved ST 2 will not last. Its too fragile. I have never had a discone come down. After my tests I took down the ST 2 and sold it, and still have up the discone. There is no substitute for being resonant at various points on a freq plot. The ST 2 basically fakes the radio as far as impededance with the 300 ohm transformer. It hardly blows the discone out of the water, like I hear so often. Advertising hype. Jeff I havent seen the heavier duty one in person, so I can't say for sure how strong it is, but a discone really truly blows as an antenna. A ringo ranger 2 works pretty well, better than any of the discones I have had on most freqs. I wonder if the Yaesu was hearing better on the discone because it was desensitizing. I had one here for a while, and it was a disaster, intermod and hash all over, and so I sold it to a friend who lives 20 miles from any really big town. Works good out there.. Right now I have two Scantennas in the attic, along with a discone and a home brew ground plane cut for 161 Mhz (trains), The discone is in the "sweet spot" in the attic (it was there first), and until I bought the first Scantenna, I thought it was ok. I even replaced the original coax on the discone with 9913 and it was a tiny bit better on 800, but wasn't anywhere else. I have the discone connected to my BC9000, as it's better on that antenna, since it seems most prone to losing it's cool due to a nearby TV station's huge signal. The Pro 2005 and 2006 on the scantennas will both easily beat the 9000 in every way but scan speed, on any antenna. If I had my choice as one single antenna to use, I would probably pick the home built ground plane (I can build one that will last forever), with the ringo a close second. The scantenna's next only due to it's fragility. I may build a HD one myself one of these days.. As far as impedance goes, it's pretty meaingless for receivers, loss is much more of a problem. I need to find a climber to change the coax on my ringo, and put up another discone as a backup to it, for 2M/440. I don't want to get ripped off for 300 bucks like I did 10 years ago, 25 of it was for coming over the border into my town. That 150 yards cost 4 times as much as the ground plane I made the day before cost me! BDK |
#6
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![]() "BDK" wrote in message ------------------------------------------------------------------------------- If I had my choice as one single antenna to use, I would probably pick the home built ground plane (I can build one that will last forever), with the ringo a close second. The scantenna's next only due to it's fragility. I may build a HD one myself one of these days.. As far as impedance goes, it's pretty meaingless for receivers, loss is much more of a problem. I need to find a climber to change the coax on my ringo, and put up another discone as a backup to it, for 2M/440. I don't want to get ripped off for 300 bucks like I did 10 years ago, 25 of it was for coming over the border into my town. That 150 yards cost 4 times as much as the ground plane I made the day before cost me! ------------------------------------------------------------------------------- I suggest you go back and study some rf transmission basics. Impedance is important on recieve if you want to get maximum signal transfer. In an impedance matched circuit you will get maximum flow of rf, than in a non resonant circuit. This applies to recieve as well as transmit. Why do you think they use that little 1.95$ 300ohm to 50ohm transformer on the scantenna? It isnt there for looks. And no my VR 5k wasnt suffering from intermod or overload, had an AM filter, an FM filter, and a paging freq. filter on it and it works quite well. If you build your own ground plane, I bet you will make the elements to come out to 1/4 wave on the freq. you want it to work best on wont you? Why? because a 1/4 wave is a 52 ohm load at the resonant frequency. Thats what a discone does, it happens to be a 1/4 wave on a lot of different frequencies, thats why you can xmit on it. Scantennas work, just not well enough for me to have one up and with the 1st freezing rain and wind that comes along it ends up bent up like a pretzel. The only band where it outperformed the discone was in the 152-155 band where the LEO's use in different counties. Jeff |
#7
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In article kUq0d.22548$D%.9053@attbi_s51, "Jeff" oldog@(nospam)
mchsi.com says... "BDK" wrote in message ------------------------------------------------------------------------------- If I had my choice as one single antenna to use, I would probably pick the home built ground plane (I can build one that will last forever), with the ringo a close second. The scantenna's next only due to it's fragility. I may build a HD one myself one of these days.. As far as impedance goes, it's pretty meaingless for receivers, loss is much more of a problem. I need to find a climber to change the coax on my ringo, and put up another discone as a backup to it, for 2M/440. I don't want to get ripped off for 300 bucks like I did 10 years ago, 25 of it was for coming over the border into my town. That 150 yards cost 4 times as much as the ground plane I made the day before cost me! ------------------------------------------------------------------------------- I suggest you go back and study some rf transmission basics. Impedance is important on recieve if you want to get maximum signal transfer. In an impedance matched circuit you will get maximum flow of rf, than in a non resonant circuit. This applies to recieve as well as transmit. Why do you think they use that little 1.95$ 300ohm to 50ohm transformer on the scantenna? It isnt there for looks. And no my VR 5k wasnt suffering from intermod or overload, had an AM filter, an FM filter, and a paging freq. filter on it and it works quite well. If you build your own ground plane, I bet you will make the elements to come out to 1/4 wave on the freq. you want it to work best on wont you? Why? because a 1/4 wave is a 52 ohm load at the resonant frequency. Thats what a discone does, it happens to be a 1/4 wave on a lot of different frequencies, thats why you can xmit on it. Scantennas work, just not well enough for me to have one up and with the 1st freezing rain and wind that comes along it ends up bent up like a pretzel. The only band where it outperformed the discone was in the 152-155 band where the LEO's use in different counties. Jeff LOL, whatever you say...calm down. If I had to throw all those filters on the Yaesu, I would have just bought an ICOM R8500 in the first place and it would have made life easier, or kept my 7100, since I didn't need another SW receiver. You do realize that a scanner doesn't want 50/52 ohms at most of it's freq coverage, dont you? It's kind of hit and miss at best. I know what the transformer is for. I'm just posting that in my almost 40 years of VHF and up monitoring, the scantenna, fragile as it was/is (I don't have a HD version to check out)is vastly, not just a little bit superior to a discone. Let them buy discones if they want!! I don't own Channel Master, or whoever makes it these days... BDK |
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