Message-ID: <509179F2.60700@psk31.plus.com>
Date: Wed, 31 Oct 2012 19:20:18 +0000
From: g3zjo <g3zjo@psk31.plus.com>
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Subject: Re: LF: WSJT-X BENCH TESTS
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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
>
>
>
>
>
>
>
> -----
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