More power to make up for my 10db excess noise = xxx Kw - whoopee! Need
to get some 3 phase.
Remote Rx, eg 100km makes a lot more sense. Clubs could put up shared
facilities.
With direct sampling synchronous receivers and down sampling of say the
bottom 50Khz of 160, every user could reconstruct their own pattern out
of a 4 or 8 square. Residential internet bandwidth is commonly several
hundred Mbit/sec. The supercomputer on every desk is up to the
arithmetic. If you live in the boonies without 200Mbit you don't need
the remote Rx anyway.
Just a small matter of software ;) ;) Haven't the radio telescope guys
done this in GHz bands?
Grant KZ1W
On 3/13/2020 09:42, Jim Thomson wrote:
Date: Thu, 12 Mar 2020 20:25:16 -0700
From: Jim Brown <jim@audiosystemsgroup.com>
To: topband@contesting.com
Subject: Re: Topband: Hi Z amplifiers for 160m
<Didn't review your math, but the more important question is, "how old is
<your noise data?" In my experience trying to work EU on Topband now as
<compared to c.a. 2007-8 is vastly more difficult thanks to higher noise
<levels on both ends. Back then I could work EU on CW; now, with better
<antennas, I need the 10 dB advantage of FT8. In the past six seasons
<I've heard six EU/U.K. stations on CW, two were able to hear me. And
<those were all during one of this season's contest.
<Bottom line -- if your noise data is ten years old, I'd add 10 dB to it;
<if it's older, probably more.
<73, Jim K9YC
## Clearly whats required is a long overdue increase in TX power
limits on 160 band...and also 80+40.
That or arrl legal remote RXs..... pick one.
Jim VE7RF
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