Topband: Salt-Water Qth!

[donovanf at starpower.net]

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%B012%2701.0%22N+80%C2%B043%2727.0%22W/@32.1999078,-80.7241131,234m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0 

Is there a Marshland Road on the Maine coast? 

73 
Frank 
W3LPL 

----- Original Message -----

From: "Paul Christensen" <w9ac at arrl.net> 
To: topband at contesting.com 
Sent: Wednesday, April 1, 2015 5:32:23 PM 
Subject: Re: Topband: Salt-Water Qth! 

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 coast of GA, part of SC and half 
of FL. 

Paul, W9AC 

-----Original Message----- 
From: Richard Fry 
Sent: Wednesday, April 01, 2015 9:42 AM 
To: HVT ; topband at contesting.com 
Subject: Re: Topband: Salt-Water Qth! 

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 conductivity map, and 
their GW propagation charts for this frequency and power. 

The space wave fields radiated by vertical monopoles are related to their 
groundwave fields, so space wave fields radiated over (mostly) salt-water 
paths are much greater in magnitude than over terra firma (other things 
equal). 

Maybe this will give a rough idea of what to expect from a sea-coast QTH in 
Maine. 

R. Fry 

http://s20.postimg.org/ylw4y5vn1/WMFJ_1_k_W_1450_k_Hz_Pt_Orange_FL.jpg 

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