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6 meter signals off by 2Khz in Panadapter on the K3 #139

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?

This is on the K3. On 6 meters, it appears that the wanted signal is offset
by 2Khz on the panadapter. It appears to be 2 Khz higher then the actual
frequency. Changing LO center frequency in IF Stage setup by 2Khz fixes the
problem on 6 meters, but misaligns the panadapter on other bands. Swap I/Q
channels is selected and set to 48Mhz. This occurs on all modes. Panadapter
alignment works correctly on all other bands. I have tried to reinstall
PowerSDR IF stage and to remove databaseIF.xml in my users directory and
have it recreated on IF Stage startup.

What version of the product are you using? On what operating system?

Windows XP, 32 Bit. PowerSDR IF Stage 1.19.3.4 on the K3. Using EMU0202
Sound Card with LPPAN. It occurs with or without LPBridge.

Thanks,
John

Original issue reported on code.google.com by k...@verizon.net on 22 Feb 2010 at 9:28

GoogleCodeExporter commented 9 years ago

Original comment by cgates...@gmail.com on 22 Feb 2010 at 11:06

GoogleCodeExporter commented 9 years ago

Original comment by cgates...@gmail.com on 23 Feb 2010 at 2:53

GoogleCodeExporter commented 9 years ago

Original comment by cgates...@gmail.com on 2 Mar 2010 at 2:22

GoogleCodeExporter commented 9 years ago 
I have just installed version 1.19.3.5 without problems.  6 meters is open 
today - 
my panadapter display shows the signal envelope of a received signal about 7 - 
8 khz 
below the "tuning line".  Using Windows 7 32 bit, LP-BRIDGE, on a Core 2 Duo HP 
PC. 
EMU-0202 sound card connected to K3. Channels reversed at 48Mhz.  All other 
bands 
display properly.  And thanks for a fantastic addition to my station!

Original comment by monty...@gmail.com on 7 Apr 2010 at 7:15

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
This is a me too except that the frequency error on 6 meters is exactly 10 kHz.
The panadapter spectrum of the signal shows up 10 kHz below the tuning line 
when the
6 meter reverse I/Q (48000000) is on.  Signals tune in the right direction per 
the
K3.  The tuning frequency line agrees with the K3. 

With reverse I/Q off, I get proper zerobeat but but the direction is backwards 
as
expected.  This looks somewhat like a 2 kHz error. 

Please excuse my this morning's deleted (erroneous) comment.

System is EMU202 USB, Win XP sp3, Direct com port 1.  K3 S/N 125.

Original comment by k...@arrl.net on 24 Apr 2010 at 10:56

GoogleCodeExporter commented 9 years ago 
My problem is slightly different. USB signals appear below the carrier and LSB 
signals above the carrier. The display also tunes backwards. Checking and 
uncheck 
swap I/Q does not change the behavior, it simply shifts the signal to the left.

Both cw and cw-reverse work properly. The signal shows up right where it 
should. 
I had this problem before and it was fixed in an earlier version of PSDR/IF. 
Now it 
seems it is back in version 1.19.3.5.
All HF bands work correctly.

Original comment by tim-tay...@comcast.net on 4 Jun 2010 at 2:46

GoogleCodeExporter commented 9 years ago 
Issue 188 has been merged into this issue.

Original comment by cgates...@gmail.com on 21 Sep 2010 at 9:49

GoogleCodeExporter commented 9 years ago 
I have the same problem as reported by comment 8 above. Haven't tried earlier 
version though.

Original comment by kosm...@gmail.com on 15 Dec 2010 at 1:40

GoogleCodeExporter commented 9 years ago 
Offset is 10kHz on 6M, and requires -10000 in the Global Offset, then 
everything else lines right up. 192000 sampling rate. EMU-0202. LP-Pan. K3

Original comment by kfou...@gmail.com on 4 Aug 2011 at 10:10