[RTTY] Estimating increase in bandwidth/interfeerence fromWinlink if RM11708 is approved

[RTTY]

Terry one thing the model doesn't take into account, unless I missed
something, is the fact that the Winlink stations will spread out horizontally
even more to avoid interfering with each other. Funny how they worry
about RMS to RMS interference and they're even fussy about ALE
bothering them.

Ron
K0IDT


----- Original Message ----- 
From: "RTTY" <rtty at contesting.com>
To: "'RTTY'" <rtty at contesting.com>
Cc: "'Dick Hanson'" <dick at dkhanson.com>; "'Angelo Glorioso'" <n5uxt at hotmail.com>; "'David Woolweaver'" <k5rav at ix.netcom.com>; "'Ted 
Rappaport'" <tedrappaport at verizon.net>; "'Mark'" <k5xh1963 at gmail.com>; "'Dan White'" <hdwhite at charter.net>; "'John Robert Stratton'" 
<N5AUS at n5aus.com>
Sent: Thursday, April 17, 2014 8:36 PM
Subject: Re: [RTTY] Estimating increase in bandwidth/interfeerence fromWinlink if RM11708 is approved


> Thanks to inputs from Ted, N9NB, the model was changed where the results are
> now in dB showing the additional interference if current Winlink stations
> move to RM11708 max bandwidths of 2.8 KHz.    The average interference
> across the modeled 40 meter spectrum is 3.4 dB.   And yes, interference is
> the correct term since the stations are all automated and do not have
> working busy frequency detectors.
>
> The new graph in dB can be seen at:
> http:\\64.128.19.154\Images\RM11708-2.jpg
>
> Two new assumptions were added to the list:
>    1. The model assumes a linear Power Spectral Density, PSD.  That
> simplifies the model but it lowers the final results a bit
>    2. Each 100 Hz frequency bin starts at a count of 1 (rather than 0)
> which keeps the dB/power ratio math in check
>
> Terry  AB5K