[Premium-Rx] WJ8711A DYNAMIC RANGE & Ip3

[Pat1McA at aol.com]

Hello to all,
 
Can anyone who has measured the true dynamic range and Ip3 of an WJ  
8711/A/HF1000 DSP HF Receiver let me know how they managed to do it  please.
 
Two receivers were in here for measurement yesterday.
 
 Using a signal spacing of 20kHz with max levels of -10dBm I  could not get 
any meaningful results using the "ARRL" (by N1UL) method for  measurement 
which always works without fail.
 
The test equipment is not questionable, it performed flawlessly  on other 
Racal, R&S and AEG analogue receivers here  under exactly the same 
measurement conditions.
 
What point am I missing? What am I doing wrong?
 
Thanks and regards,
 
Pat G3YFK
   
ps:  Apologies but I always ask when I do not  know!