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1. Topband: Salt-Water Qth! (score: 1): Author: HVT <w2re@hudsonvalleytowers.com>; Date: Wed, 1 Apr 2015 07:47:23 -0400; This is my first post to the Top-Band Reflector, so please excuse my ignorance if this topic has been discussed in the past. Is there any scientific data in print to prove the theory that ocean front; /archives//html/Topband/2015-04/msg00000.html (7,494 bytes)
2. Re: Topband: Salt-Water Qth! (score: 1): Author: "Richard Fry" <rfry@adams.net>; Date: Wed, 1 Apr 2015 08:42:32 -0500; Below is a link to the groundwave field of a 1 kW non-directional AM broadcast station located about 1 mile from the Atlantic, in Florida. The groundwave field shown is based on the FCC M3 conductivi; /archives//html/Topband/2015-04/msg00001.html (8,063 bytes)
3. Re: Topband: Salt-Water Qth! (score: 1): Author: Roger D Johnson <n1rj@roadrunner.com>; Date: Wed, 01 Apr 2015 09:56:23 -0400; "The RHR team is also expanding to the State of Maine with multiple Ocean Front Properties. more details to follow." More local QRM from clueless remote operators. Why don't you expand on the west co; /archives//html/Topband/2015-04/msg00003.html (9,082 bytes)
4. Re: Topband: Salt-Water Qth! (score: 1): Author: Roger D Johnson <n1rj@roadrunner.com>; Date: Wed, 01 Apr 2015 09:58:05 -0400; "The RHR team is also expanding to the State of Maine with multiple Ocean Front Properties. more details to follow." More local QRM from clueless remote operators. Why don't you expand on the west co; /archives//html/Topband/2015-04/msg00004.html (9,384 bytes)
5. Re: Topband: Salt-Water Qth! (score: 1): Author: donovanf@starpower.net; Date: Wed, 1 Apr 2015 12:17:23 -0400 (EDT); Hi Ray, Two primary factors affect sky wave signal strength from Topband verticals close to salt water: 1. ground loss in the immediate vicinity of the feed point. The feed point must be much closer; /archives//html/Topband/2015-04/msg00008.html (11,961 bytes)
6. Re: Topband: Salt-Water Qth! (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Wed, 1 Apr 2015 12:32:23 -0400; Rich, Have a look at 1KW 1130 AM on Hilton Head Island, SC (WHHW-AM). At 12 noon on any day, I can easily ride that signal down the Space Coast of FL and about 10 miles inland. That's the entire coas; /archives//html/Topband/2015-04/msg00009.html (8,582 bytes)
7. Re: Topband: Salt-Water Qth! (score: 1): Author: donovanf@starpower.net; Date: Wed, 1 Apr 2015 13:03:31 -0400 (EDT); Hi Paul, Its the perfect location for a Topband 4-square array! It would be even better if the array were in the marsh... Marshland Road, Hilton Head Island https://www.google.com/maps/place/32%C2%B0; /archives//html/Topband/2015-04/msg00010.html (10,014 bytes)
8. Re: Topband: Salt-Water Qth! (score: 1): Author: "Ray Higgins (W2RE)" <w2re@hudsonvalleytowers.com>; Date: Wed, 1 Apr 2015 13:10:46 -0400; Hi Frank, Thank you for your detailed answer. I appreciate your valuable time in responding. After a few emails and a phone call it looks like we need to be within the fresnel zone, which is five wav; /archives//html/Topband/2015-04/msg00011.html (14,489 bytes)
9. Re: Topband: Salt-Water Qth! (score: 1): Author: "Ed Sawyer" <sawyered@earthlink.net>; Date: Wed, 1 Apr 2015 13:13:17 -0400; The best write up and data I have seen on this subject was the "team vertical" report on test done in Jamaica back about 10 or more years ago. As I recall, the vertical signal strength to low angle D; /archives//html/Topband/2015-04/msg00012.html (8,924 bytes)
10. Re: Topband: Salt-Water Qth! (score: 1): Author: Chuck Hutton <charlesh3@msn.com>; Date: Wed, 1 Apr 2015 17:26:07 +0000; You might want to take a look at some technical reports from the BBC Engineering Department. Two in particular: RA-25 titled "Influence of Ground and Sea on MF Propagation" and 1975-32 titled "LF and; /archives//html/Topband/2015-04/msg00014.html (11,044 bytes)
11. Re: Topband: Salt-Water Qth! (score: 1): Author: "Richard Fry" <rfry@adams.net>; Date: Wed, 1 Apr 2015 12:38:52 -0500; Have a look at 1KW 1130 AM on Hilton Head Island, SC (WHHW-AM). At 12 noon on any day, I can easily ride that signal down the Space Coast of FL and about 10 miles inland. That's the entire coast of G; /archives//html/Topband/2015-04/msg00015.html (8,884 bytes)
12. Re: Topband: Salt-Water Qth! (score: 1): Author: "Richard Fry" <rfry@adams.net>; Date: Wed, 1 Apr 2015 13:18:08 -0500; Some may wonder why I posted the groundwave coverage contour of an AM broadcast station as being relevant to this thread. Hams are mostly interested in the space wave radiated by an antenna system. T; /archives//html/Topband/2015-04/msg00017.html (10,104 bytes)
13. Re: Topband: Salt-Water Qth! (score: 1): Author: Don Greenbaum <don@aurumtel.com>; Date: Wed, 01 Apr 2015 14:26:50 -0400; In 1997 I moved from a home about 1/2 mile from the ocean to oceanfront property (I live on an inlet). I put up a hytower with a 160 wire (inverted L). This was the same antenna I had inland that I w; /archives//html/Topband/2015-04/msg00018.html (12,675 bytes)
14. Re: Topband: Salt-Water Qth! (score: 1): Author: donovanf@starpower.net; Date: Wed, 1 Apr 2015 14:52:22 -0400 (EDT); Hi Ray, If you're back five wavelengths from salt water or salt marsh, almost the entire Fresnel zone will be over land and the salt water will make essentially no improvement . That's okay if the la; /archives//html/Topband/2015-04/msg00019.html (14,507 bytes)
15. Re: Topband: Salt-Water Qth! (score: 1): Author: donovanf@starpower.net; Date: Wed, 1 Apr 2015 14:55:17 -0400 (EDT); Hi Ray, If you're back five wavelengths from salt water or salt marsh, almost the entire Fresnel zone will be over land and the salt water will make essentially no improvement. That's okay if the lan; /archives//html/Topband/2015-04/msg00020.html (14,537 bytes)
16. Re: Topband: Salt-Water Qth! (score: 1): Author: donovanf@starpower.net; Date: Wed, 1 Apr 2015 15:09:31 -0400 (EDT); Don's email nicely describes the lack of salt water advantage when you're just 2500 feet from the ocean or salt marsh. Perhaps Don can describe the soil characteristics at his site 1/2 mile from the; /archives//html/Topband/2015-04/msg00021.html (13,242 bytes)
17. Re: Topband: Salt-Water Qth! (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Wed, 1 Apr 2015 15:35:58 -0400; If you're back five wavelengths from salt water or salt marsh, almost the entire Fresnel zone will be over land and the salt water will make essentially no improvement . That's okay if the land is sa; /archives//html/Topband/2015-04/msg00022.html (10,392 bytes)
18. Re: Topband: Salt-Water Qth! (score: 1): Author: Don Greenbaum <don@aurumtel.com>; Date: Wed, 01 Apr 2015 16:29:11 -0400; Frank: Correct, the old house's soil was sandy on top of clay. The salt marsh has soil that is your usual black muck and is ALWAYS wet. During extreme high tides the bottom of the element actually go; /archives//html/Topband/2015-04/msg00024.html (14,905 bytes)
19. Re: Topband: Salt-Water Qth! (score: 1): Author: "Ray Higgins (W2RE)" <w2re@hudsonvalleytowers.com>; Date: Wed, 1 Apr 2015 19:00:57 -0400; Tom, Received a lot of valuable information from very smart people today that know a lot more about this stuff than I. We can move forward with an intelligent game plan to add a well equipped station; /archives//html/Topband/2015-04/msg00025.html (10,379 bytes)
20. Re: Topband: Salt-Water Qth! (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Wed, 01 Apr 2015 23:31:53 -0400; Now-a-days I'm just 90% an appliance operator; lack of EE knowledge other than reading all the handbooks back in the late 70's give me today & that puts me at a disadvantage when it comes to salient; /archives//html/Topband/2015-04/msg00029.html (9,145 bytes)

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