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#1
posted to rec.boats.cruising
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For the radio nutz
I've picked up an Icom 710 and want to play with it at home before
installing in the boat. I'm looking at making an antenna such as the center fed dipole or an end fed resonant feedline antenna as shown at http://www.wr6wr.com/newSite/article...rials0501.html Any reason this antenna couldn't be used on the boat? It seems it would be more convenient. Where to buy and how much are the toroids? Comments please. What's the scoop on artificial grounds such as this. Any use on a boat? http://www.mfjenterprises.com/produc...prodid=MFJ-931 Thanks Gordon |
#2
posted to rec.boats.cruising
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For the radio nutz
Gordon wrote:
I've picked up an Icom 710 and want to play with it at home before installing in the boat. I'm looking at making an antenna such as the center fed dipole or an end fed resonant feedline antenna as shown at http://www.wr6wr.com/newSite/article...rials0501.html You can't transmit from home without a ham license, of course. But for reception, any random length of wire will pick up a lot of signals. Any reason this antenna couldn't be used on the boat? It seems it would be more convenient. More convenient than what? Where to buy and how much are the toroids? Comments please. Before you begin experimentation with antennas, it might be worthwhile to borrow some ARRL publications from your local library. The Radio Amateur's Handbook and Antenna Manual are two good books. There is also a tremendous amount of material on the web dealing with marine radios, antennas and grounds. What's the scoop on artificial grounds such as this. Any use on a boat? http://www.mfjenterprises.com/produc...prodid=MFJ-931 Try a Google search, Gordon. Good luck. Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#3
posted to rec.boats.cruising
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For the radio nutz
In article ,
Gordon wrote: I've picked up an Icom 710 and want to play with it at home before installing in the boat. I'm looking at making an antenna such as the center fed dipole or an end fed resonant feedline antenna as shown at http://www.wr6wr.com/newSite/article...rials0501.html Any reason this antenna couldn't be used on the boat? It seems it would be more convenient. Where to buy and how much are the toroids? Comments please. What's the scoop on artificial grounds such as this. Any use on a boat? http://www.mfjenterprises.com/produc...prodid=MFJ-931 Thanks Gordon Just about ANY chunk of wire stretched out in the Thin Air, will work as a Receiving Antenna, for your new toy. It really doesn't have to be tuned or pruned or anything else, to act as a Receiving Antenna. You don't need a Centerfeed Dipole to Receive, just a hunk of wire. Your not going to hear a whole lot from home, due to the statistical probubility that your local neighborhood noise level, will be higher than the signals your trying to hear, but if the band is open, you'll hear what there is anyway. Most of the Commercial Traffic has moved to SATPhones, and the rest is going to be spread over the appropriate MF/HF Marine Frequency Channels. You should be able to listen to the NOAA Wx Transmissions on 4125.0 Khz most evenings, as this is a Universal Calling and Working Frequency for ALL of the North Pacific. MF/HF Marine Antennas are really very simple to construct, and don't rely on Torroids, or other gimmicks like that, to work and work correctly. Artificial Grounds are just that ARTIFICIAL, and are about as good, and usefull, as nothing at all. If you want a GOOD RF Ground, build one into your vessel, and do it right the first time, so you don't have to just redo it, again, and again, untill you get it right. You can search the past posts on Marine RF Grounding Systems, as there have been some very good POSTS on the subject presented here in the past. It is the RF Ground that makes ANY Marine MF/HF Antenna System preform, so build it right, the first time, and then just enjoy the operations. It is the RF Ground that is Important..... again, it is the RF Ground... Bruce in alaska long time Marine RadioMan, in a previous life... -- add a 2 before @ |
#4
posted to rec.boats.cruising
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For the radio nutz
Gordon wrote in news:137dfjvq3gh4vb0
@corp.supernews.com: I've picked up an Icom 710 and want to play with it at home before installing in the boat. I'm looking at making an antenna such as the center fed dipole or an end fed resonant feedline antenna as shown at http://www.wr6wr.com/newSite/article...rials0501.html Any reason this antenna couldn't be used on the boat? It seems it would be more convenient. Where to buy and how much are the toroids? Comments please. What's the scoop on artificial grounds such as this. Any use on a boat? http://www.mfjenterprises.com/produc...prodid=MFJ-931 Thanks Gordon A tuned dipole or other specifically-tuned antenna isn't much of an option because there are so many "marine bands" which are in use in different parts of the day. A 12 Mhz antenna, tuned to 12 Mhz, won't work on the 8 Mhz band or 6 Mhz band or 4 Mhz band, etc.... Larry -- http://www.spp.gov/ The end of the USA and its Constitution....RIP |
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