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Re: Topband: Hi Z amplifiers for 160m

To: "TopBand List" <topband@contesting.com>
Subject: Re: Topband: Hi Z amplifiers for 160m
From: "Jim Thomson" <jim.thom@telus.net>
Date: Fri, 13 Mar 2020 09:42:23 -0700
List-post: <mailto:topband@contesting.com>
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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