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Topic: [solved] Receiving strong sigs 12.KHZ (Read 14130 times)
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DJ0RG
Neuling
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Posts: 19
Noch neu
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Re:[solved] Receiving strong sigs 12.KHZ
« Reply #45 on: 29. August 2018, 20:18:20 »
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Trying a side path meanwhile: Is it normal / by design that values like EEPROM_TX_IQ_80M_PHASE_BALANCE change from saving to flash to loading from flash? I wonder if this is a memory problem, either in memory or on flash. Currently config memory would be my guess (not knowing the system at all  )
Edit: The unit might be confused by a certain configuration schema, but we also might have two problems here: corrupt memory and a unit being confused by the result.
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| « Last Edit: 29. August 2018, 20:33:36 by DJ0RG » |
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DB4PLE
positron
Urgestein
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Posts: 1278
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Re:[solved] Receiving strong sigs 12.KHZ
« Reply #46 on: 29. August 2018, 20:39:22 »
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Hi,
I did not think straight, the TX lG abelled phase / gain values should not play a role in receiving. So this leaves us
with just
?EEPROM_FLAGS1 170 // Miscellaneous status flag, saved in EEPROM -
?EEPROM_AGC_WDSP_THRESH 376
and possibly the filters:
329, 334, 333, 338, 358 is in EEPROM_FILTER_PATH_MAP_BASE 329
I compared the FLAGS1 settings (FLAGS1 is 16 independent yes/no settings) and the results are:
The only differences are:
#define FLAGS1_SWAP_FWDREV_SENSE 0x10 // if FWD/REV A/D inputs from RF power detectors are to be reversed
#define FLAGS1_WFALL_ENABLED 0x80 // 1 = Waterfall display
And I don't think any of this is causing the issue.
Leaves us with the AGC_THRES or the filters...
73
Danilo
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SP9BSL
positron
alter Hase
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Posts: 443
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #48 on: 30. August 2018, 08:23:25 »
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| I have read in Yahoo NG thatthere is a patched binary of recent firmware existing where the issue is fixed. That is the way open source shoulderstand ** NOT ** work. Modifiying the source and not contributing to the project. I hope it is a hoax and not reality. Otherwise there do exist some "bad boys" - I only can call them this way. |
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Hi Andreas,
I've posted note in Yahoo NG about this...
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73 Slawek
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WD8BXS
alter Hase
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Posts: 286
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #49 on: 30. August 2018, 12:19:05 »
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So, I restored a known good config file.
all was well.
I changed the frequency calibration, no change.
I changed the display to scope, no change.
I swapped SWR meter, no change.
I turned on RX IQ auto, no change.
I turned the radio off and left it til this morning, when I turned it on this morning, the problem is back.
Here is this file for your consideration.
de Chuck,
Thanks for all of your hard work, I hope this can be figured out, I know it takes time, and we all have other
interests. Take care my friends!!
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Thanks,
De WD8BXS vy 73
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WD8BXS
alter Hase
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Posts: 286
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #50 on: 30. August 2018, 13:00:58 »
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OK, Next phase, hih
I restored the good file again, changed the setting again.
Backed up that config, all is still good.
used the rig menu and backed up and restored the settings, and all is still OK
Will keep an eye on and report back.
Chuck
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Thanks,
De WD8BXS vy 73
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WD8BXS
alter Hase
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Posts: 286
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #52 on: 30. August 2018, 15:51:17 »
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So, Andreas, you are thinking possible bad solder around EEPROM?
I didn't mention that I use the MCM32F429VIT6 MCU,
I do not think that would be the issue.
Thanks,
Chuck
PS radio is still working OK.
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Thanks,
De WD8BXS vy 73
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DB4PLE
positron
Urgestein
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Posts: 1278
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #53 on: 30. August 2018, 16:50:10 »
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Hi,
let have a look at the facts and what they mean:
Even if the backup and restore from flash is responsible for changing a good config to its bad sibling (which then causes the 12 khz issue), it is not directly relevant here.
Since also the "bad" config is still a 100% valid configuration (as far as I can see). So there may be multiple ways how to get to a config which causes the trouble, the flash backup/restore possibly one of these.
Until we have figured out, what is the root cause of the 12khz problem, even if the EEPROM to Flash transfer is problematic and we fix it, it would not fix the 12khz issue as such but only close one path to get the problem.
BTW, we already have a routine which checks if the content of EEPROM and Flash storage are identical, we use the when we transfer the Flash for the first time into the EEPROM. We could also call this after Backup and Restore and see if there is an issue. No need to run a CRC, that would be only necessary for data corruption between Backup and Restore (i.e. something changes the content of the flash after backup and before restore but this is unlikely).
73
Danilo
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| « Last Edit: 30. August 2018, 16:50:21 by DB4PLE » |
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DB4PLE
positron
Urgestein
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Posts: 1278
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #55 on: 01. September 2018, 11:59:09 »
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Hi Chuck,
could you please do the following and report back:
Use a mcHF which has the issue:
- Turn off all DSP functions and also the Noise blanker.
- Use a filter with a bandwidth of 3.8khz or larger on SSB and test if the issue is still there?
- See if the issue is detectable in all of the modes (SSB, AM, FM) or just in SSB?
- Is there any indication on the waterfall or scope of the 12khz signal (I doubt that, but let's be thorough here).
There must be a place in the signal processing chain where we introduce the problem. I suspect the decimation (since it is 12khz we decimate to in SSB for the filters narrower than 3.8khz). The above tests could help us to exclude certain part of the processing chain.
73
Danilo
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WD8BXS
alter Hase
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #56 on: 01. September 2018, 13:15:07 »
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EUREKA!!! I ran the test, and as soon as I go from 3.8 filter to 3.6 the issue is there!
Only on filter 3.8 and above is the extra signal not there.
SSB or CW does not matter.
Chuck
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Thanks,
De WD8BXS vy 73
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WD8BXS
alter Hase
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Posts: 286
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #57 on: 01. September 2018, 13:15:55 »
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Also , there is no indication on the scope.
Chuck
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Thanks,
De WD8BXS vy 73
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DB4PLE
positron
Urgestein
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Posts: 1278
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #58 on: 01. September 2018, 13:45:02 »
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Hi Chuck,
thank you! Then my guess that it is somewhat related to the decimation/filters is right.
However, my ability to go further ends here I am afraid, the signal processing specialist have to take over now.
I will have a look into the code, though, maybe I am lucky. I might ask for more tests.
73
Danilo
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DB4PLE
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Urgestein
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Posts: 1278
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Re:[not solved] Receiving strong sigs 12.KHZ
« Reply #59 on: 01. September 2018, 14:13:52 »
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Hi Chuck,
please test again with the firmware attached to this post.
Like before, use a configuration which does show the problem.
Now: Use a 3.4 khz, a 3.6 khz and a 3.8 khz filter in SSB and report which of the filters have the issue. It is not necessary to test more than one filter per bandwidth.
73
Danilo
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WD8BXSBAD.zip
