[Elecraft] [K3 / K3S] KIO3B NF

Edward R Cole kl7uw at acsalaska.net
Sat Jul 4 15:39:19 EDT 2015


Actually JT65 is capable of decoding to -28/-29 if your radio NF and 
sky noise is low enough.  I regularly decode 2m-eme signals that are 
below -27 and sometimes -29.  But then my 2m system MDS is -174 dBm 
(Rx NF = 0.56 dB) which one is unlikely to achieve on HF (mostly 
because sky noise and local noise set the lower limits of sensitivity 
and not the radio).

----------------------
snip===
you should see JT65 decodes very close theoretical -24 dB 50% threshold
while JT9 decodes should be about two to three dB better (-26 dB) at
the 50% threshold.
snip===

73,   ... Joe, W4TV

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
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