[50mhz] NEW VE7BQH G/T Tables for Antenna Comparisons

[Lance Collister, W7GJ]

I have uploaded the new VE7BQH Interactive Antenna Comparison Table to my website.  
As always, these spreadsheets can be accessed from the following web page:

http://www.bigskyspaces.com/w7gj/6mTable.htm

You will note that most of the changes in these tables do not involve 6m yagis.  
However, I am sure you will find the new chart visually comparing the gain of the 
various antennas interesting and useful.  Thanks again to Lionel for all the work he 
has put into this to help us be more successful with our antenna projects!

GL and VY 73, Lance

On 6/9/2017 21:36, Lionel H. Edwards wrote:
> To All:
>
> Attached is the latest VE7BQH G/T Tables.
>
> There has been a substantial change to the Tables this month. Tsky and Tearth is 
> now Interactive or changeable by the user.
>
> I would like to thank Vladimir, UR5EAZ for coming up with the idea and developing 
> the actual EXCEL. Well done!
>
> The original Tsky and Tearth were developed in 1996. Since then as we all are aware 
> there has been a notable increase in noise on these bands due to a wide range of 
> man made devices. As an example several measurements taken in Urban areas show that 
> it is no longer possible to see 200K cold sky especially with up to 4 yagis arrays. 
> The biggest increase has been in ground noise. As an example of some Urban 
> measurements on 144 MHz, The best Tsky seen was 290K and the Tearth was 4000K. In 
> some cases 5000K.
>
> The impact of using 290K and 4000K in the 144 MHz Table means antennas with low 
> noise characteristics start to stand out over an average antenna.
>
> Stations can now determine their own Tsky and Tearth characteristics, plug in the 
> numbers and better evaluate the performance of their antenna.
>
> Lionel, VE7BQH


-- 
Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

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