[NCDXA] W3ICM Goals Met

[Frank W3LPL]

Hi Fred, 

It more correct to say that dense, tall obstructions and severe terrain 
irregularities degrade the 6 dB of available ground reflection gain. 
Of course the antenna radiation pattern is also affected but the effect 
isn't as significant as the degradation of available ground reflection gain. 

Obstructions don't cause significant degradation until they occupy about 
5 percent of the reflection zone. About one building per acre causes 
very slight degradation, degradation increases slowly with increased 
housing density. 

In an environment with dense housing in the reflection zone, its 
very effective to raise the antenna to at least twice the height 
of the dense obstructions. Degradation is almost completely 
eliminated with antenna height about four times the height of the 
obstructions. 

Steel buildings (industrial buildings, hotels, apartment buildings) 
cause significantly more degradation than wooden houses. 

73 
Frank 
W3LPL 


From: "ncdxa" <ncdxa at ncdxa.org> 
To: "ncdxa" <ncdxa at ncdxa.org> 
Sent: Thursday, March 3, 2022 10:13:21 PM 
Subject: Re: [NCDXA] W3ICM Goals Met 

Tnx Frank. 

Excellent analysis showing that higher is not always better. 

Ablation is a new term for me. 

Question about dense housing impacting the antenna pattern... 

What is "dense" housing? 

73 

Fred 
W3ICM 


-----Original Message----- 
From: Frank W3LPL via NCDXA <ncdxa at ncdxa.org> 
To: ncdxa <ncdxa at ncdxa.org> 
Sent: Thu, Mar 3, 2022 1:43 pm 
Subject: Re: [NCDXA] W3ICM Goals Met 

Hi Fred, 

The attached presentation will help you quickly achieve 6 meter DXCC. Its 
possible to achieve 6 meter DXCC in just a few months during June and July 

See attached 

73 
Frank 
W3LPL 


From: "ncdxa" <ncdxa at ncdxa.org> 
To: "ncdxa" <ncdxa at ncdxa.org> 
Sent: Thursday, March 3, 2022 6:06:01 PM 
Subject: [NCDXA] W3ICM Goals Met 

Hello DXers, 

I had some goals when I began my new amateur radio life three years ago when I moved to a new QTH. 

I recently completed DXCC on the WARC bands, all CW or SSB, and all confirmed on LoTW. 

I also wanted to obtain the DXCC Challenge award. 

I now have DXCC on eight bands. with 10 meters completed today with ZP being my last one. (BTW, I made 5-Band DXCC in 1983). 

I also have 93 LoTW-confirmed on 160. But only three on six meters. 

Overall, I have 1200 band-countries, all LoTW, and all CW or SSB. 

I applied for the award today. 

The odd thing was my DXCC on 10. I did it without England, Japan, or Australia. I have some England QSOs, but they did not use LoTW. 

73 

Fred 
W3ICM 




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