Topband: Anyone using WSPR or WSPR-X?

[Charlie]

I'm interested!  Could I run WSPR with my FT-1000 MP and a computer, if I
turn the power down to 5 watts or so?  What would I need? Probably want to
run Windows 7 PRO?

Thanks!

Charlie, K4OTV

-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of John
Langridge
Sent: Monday, September 01, 2014 3:26 PM
To: Mike Waters; topband at contesting.com
Subject: Re: Topband: Anyone using WSPR or WSPR-X?

Mike,

WSPR uses a low baud rate interleving process plus averaging to fight
through noisy weak signal condx.  The worse thing you can do is run
excessive filtering or noise blanking because it can confuse the decoder and
in many cases lead to false decodes or no decodes at all.  The WSPR
algorythm handles those things already and really likes to have a full USB
BW to measure from.  Anything less will result in errors in S/N data.

Most of those WSPR guys on traditional HF are running very QRP.  QRO
certainly works but you will no doubt raise some eyebrows if you fire up at
high power.  Its really designed for low power and after some time, you can
establishing what S/N you need to accomplish a QSO running X amount of power
on CW or whatever mode.  On 630-meters for normal, aural CW, that can range
from -8 db to -12 db S/N as reported by WSPR.  What that really translates
to is another story.  I suspect on 160-meters the values are quite similar.


As Larry has stated, there is a lot of value in this mode in determining
up-to-the-minute band condx that can lead to QSO's.  That's one of the
reasons we use it.  It beats blindly CQing for extended periods of time.


73!

John KB5NJD / WG2XIQ



________________________________
 From: Mike Waters <mikewate at gmail.com>
To: topband <topband at contesting.com> 
Sent: Monday, September 1, 2014 2:07 PM
Subject: Re: Topband: Anyone using WSPR or WSPR-X?
 

How well does WSPR work when the band is full of static crashes? If so, is
100 watts too much with 20 over 9 QRN? Just trying to learn.

I have it working both RX and TX (5W) on 30 meters right now. :-)

73, Mike
www.w0btu.com



_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband


---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://www.avast.com