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#1
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Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff.....
Any thoughts or advice will be appreciated. TIA. Dick B. LNVT "Annie" |
#2
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"R.W. Behan" wrote in
: Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Sorry, RW. Loran-C is on 100 Khz, far below any other band of frequencies you'll ever use. It also, probably, has some kind of pre-amp in it and is very sharply tuned to 100 Khz, rendering it useless to even other Loran-C sets from different manufacturers. It's too flimsy to be a boathook, too...(c; I suppose the flagstaff idea might work on that beautiful tug. No danger in planing speed bending it over. Today in the South, you could use it to guage ice buildup! |
#3
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Well, thanks anyway, Larry. But I've had one more thought. It would
probably make a pretty good buggy whip. Dick "Larry W4CSC" wrote in message ... "R.W. Behan" wrote in : Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Sorry, RW. Loran-C is on 100 Khz, far below any other band of frequencies you'll ever use. It also, probably, has some kind of pre-amp in it and is very sharply tuned to 100 Khz, rendering it useless to even other Loran-C sets from different manufacturers. It's too flimsy to be a boathook, too...(c; I suppose the flagstaff idea might work on that beautiful tug. No danger in planing speed bending it over. Today in the South, you could use it to guage ice buildup! |
#4
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On Sat, 29 Jan 2005 12:51:59 -0800, "R.W. Behan"
wrote: Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Any thoughts or advice will be appreciated. TIA. Dick B. LNVT "Annie" LORAN antennas come in two flavors - a whip or a long wire. These low frequency signals at 200kHz often went through 'couplers' then a coax to a loran connector. The copuler is often in demand, because lorans tends to be sold without them. If the antenna is a whip, it may be rather long for a VHF antenna which is about 20 inches for a 150MHz 1/4 wave. A CB antenna is about 60 inches for a 1/4 wave at 50 MHz. A wire antenna can be useful for HF communications. - the longer the better. Brian Whatcott Altus OK |
#5
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Thanks, Brian--
It's a whip, with a cylindrical fixture at the base about 1-2 inches in diameter and maybe 1 foot high. Is this a "coupler?" If so, I'd be happy to put it in anyone's hands who could use it. Do you know of anyone? Cheers, Dick B. "Brian Whatcott" wrote in message ... On Sat, 29 Jan 2005 12:51:59 -0800, "R.W. Behan" wrote: Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Any thoughts or advice will be appreciated. TIA. Dick B. LNVT "Annie" LORAN antennas come in two flavors - a whip or a long wire. These low frequency signals at 200kHz often went through 'couplers' then a coax to a loran connector. The copuler is often in demand, because lorans tends to be sold without them. If the antenna is a whip, it may be rather long for a VHF antenna which is about 20 inches for a 150MHz 1/4 wave. A CB antenna is about 60 inches for a 1/4 wave at 50 MHz. A wire antenna can be useful for HF communications. - the longer the better. Brian Whatcott Altus OK |
#6
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On Sun, 30 Jan 2005 23:18:29 -0800, "R.W. Behan"
wrote (with possible editing): Thanks, Brian-- It's a whip, with a cylindrical fixture at the base about 1-2 inches in diameter and maybe 1 foot high. Is this a "coupler?" If so, I'd be happy to put it in anyone's hands who could use it. Do you know of anyone? Cheers, Dick B. It sounds like a loading coil, which if properly tapped will offer close to the 50 ohm match the receiver wants. -- Larry Email to rapp at lmr dot com |
#7
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Thanks for the information, Larry. (There ARE some electronic wizards
around here!) If you know of anyone who could possibly use this antenna, I'd be happy to send it to them for the cost of shipping. Otherwise I might well use if for a flagstaff. Cheers, Dick "L. M. Rappaport" wrote in message ... On Sun, 30 Jan 2005 23:18:29 -0800, "R.W. Behan" wrote (with possible editing): Thanks, Brian-- It's a whip, with a cylindrical fixture at the base about 1-2 inches in diameter and maybe 1 foot high. Is this a "coupler?" If so, I'd be happy to put it in anyone's hands who could use it. Do you know of anyone? Cheers, Dick B. It sounds like a loading coil, which if properly tapped will offer close to the 50 ohm match the receiver wants. -- Larry Email to rapp at lmr dot com |
#8
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In article ,
Brian Whatcott wrote: On Sat, 29 Jan 2005 12:51:59 -0800, "R.W. Behan" wrote: Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Any thoughts or advice will be appreciated. TIA. Dick B. LNVT "Annie" LORAN antennas come in two flavors - a whip or a long wire. These low frequency signals at 200kHz often went through 'couplers' then a coax to a loran connector. The copuler is often in demand, because lorans tends to be sold without them. If the antenna is a whip, it may be rather long for a VHF antenna which is about 20 inches for a 150MHz 1/4 wave. A CB antenna is about 60 inches for a 1/4 wave at 50 MHz. A wire antenna can be useful for HF communications. - the longer the better. Brian Whatcott Altus OK Bzzzt, Nice try, would you like to try again, for what is behind Door #1? Locan C is at 100Khz. The Antenna Coupler is the big thing at the base of the antenna, and it is an "ACTIVE Device", which means that it has an amplifier and very narrow filtering inside, and is powered by the receiver up the coax. The whip that is screwed into the top of the coupler, in most cases will be 102" long, which is 1/4 wavelength at 27 Mhz (CB Band). In all likelyhood the whip is a Shakespear 10-4 and caould be used for CB, when mounted on a standard CB Base attachment designed for a 10-4 antenna. Loran antenna couples are usually "Device Specific" so you would need to know what Mfg and Model it came from, in order to have any chance of selling it used. That said, there is certainly a used market for them. Me |
#9
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Nope..Almost certainly an active preamp. Not a loading coil. See Me
comment. Jim "R.W. Behan" wrote in message ... Thanks for the information, Larry. (There ARE some electronic wizards around here!) If you know of anyone who could possibly use this antenna, I'd be happy to send it to them for the cost of shipping. Otherwise I might well use if for a flagstaff. Cheers, Dick "L. M. Rappaport" wrote in message ... On Sun, 30 Jan 2005 23:18:29 -0800, "R.W. Behan" wrote (with possible editing): Thanks, Brian-- It's a whip, with a cylindrical fixture at the base about 1-2 inches in diameter and maybe 1 foot high. Is this a "coupler?" If so, I'd be happy to put it in anyone's hands who could use it. Do you know of anyone? Cheers, Dick B. It sounds like a loading coil, which if properly tapped will offer close to the 50 ohm match the receiver wants. -- Larry Email to rapp at lmr dot com |
#10
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Hey, "Me," I don't want to sell it. Happy to pass it along to anyone who
can use it. (Well, maybe I'd hold out for shipping costs.) Spirit of recycling, that sort of thing, eh? Cheers, Dick "Me" wrote in message ... In article , Brian Whatcott wrote: On Sat, 29 Jan 2005 12:51:59 -0800, "R.W. Behan" wrote: Help, help, you electronic wizards out there. We've removed the Loran C from a 20-year-old Lord Nelson Tug we bought recently, but up on the pilothouse is a perfectly good Loran C antenna, with the antenna lead running to the nav station. Can this antenna be used for anything else? Specifically, for a GPS?, or maybe a VHF radio? Well, maybe a flagstaff..... Any thoughts or advice will be appreciated. TIA. Dick B. LNVT "Annie" LORAN antennas come in two flavors - a whip or a long wire. These low frequency signals at 200kHz often went through 'couplers' then a coax to a loran connector. The copuler is often in demand, because lorans tends to be sold without them. If the antenna is a whip, it may be rather long for a VHF antenna which is about 20 inches for a 150MHz 1/4 wave. A CB antenna is about 60 inches for a 1/4 wave at 50 MHz. A wire antenna can be useful for HF communications. - the longer the better. Brian Whatcott Altus OK Bzzzt, Nice try, would you like to try again, for what is behind Door #1? Locan C is at 100Khz. The Antenna Coupler is the big thing at the base of the antenna, and it is an "ACTIVE Device", which means that it has an amplifier and very narrow filtering inside, and is powered by the receiver up the coax. The whip that is screwed into the top of the coupler, in most cases will be 102" long, which is 1/4 wavelength at 27 Mhz (CB Band). In all likelyhood the whip is a Shakespear 10-4 and caould be used for CB, when mounted on a standard CB Base attachment designed for a 10-4 antenna. Loran antenna couples are usually "Device Specific" so you would need to know what Mfg and Model it came from, in order to have any chance of selling it used. That said, there is certainly a used market for them. Me |
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