Hello Albert
Did you or could you check v2702, it was totally different here to v2706..
73 Eddie
On 31/10/2012 18:24, Albert W wrote:
Hello all test-users of WSJT-X,
Today I used the afternoon to solve some issues encountered by using
WSTJ-X v0.2 r2706. Test setup Flex1500 TXing 1mW, with a lot of
attenuation into a power combiner, output to a Flex 5000 RXing and the
other input of de combiner to an active antenna providing real outdoor
noise and some QRN. PC's Windows 7 64bit.
JT9-2: minimum SNR (on WSJT screen) for solid decodes is - 22dB. All
OK while increasing the input level of the wanted signal untill the
SNR reaches 0 dB (-1 dB is still OK) Here we get the famous
*********15P6715P67WCV. The dynamic range of JT9-2 is in this case
only 30 dB. (Remote stations receiving relative weak signals had the
best results)
Conclusion: for the time being you have to keep the RX signals at a
level below a SNR of 0dB and above 22 dB for 100% decodes.
Very important also is the timing, keep your PC clock within 1 sec
accuracy and keep your tx and rx frequency as stable as possible.
73, Albert
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2221 / Virus Database: 2441/5364 - Release Date: 10/30/12
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