WD8BXS
alter Hase
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[solved] Receiving strong sigs 12.KHZ
« on: 19. July 2018, 14:59:18 »
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This is the first time on a V6 radio that I have heard this.
I am hearing strong signals that are -12khz from the tuned frequency.
It does not matter where I place the xlate 0, -6, or -12, the same thing still happens.
Any ideas??
Chuck
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| « Last Edit: 13. September 2018, 21:56:47 by WD8BXS » |
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De WD8BXS vy 73
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DB4PLE
positron
Urgestein
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Re:Receiving strong sigs 12.KHZ
« Reply #2 on: 19. July 2018, 17:10:12 »
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Hi Chuck,
1. You tune to frequency X.
2. You (or someone else) generate(s) a signal at X-12khz and you can hear it when tuned to X no matter what XLATE is set to.
3. Can you also hear the signal when tuned to X-12khz?
73
Danilo
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WD8BXS
alter Hase
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Re:Receiving strong sigs 12.KHZ
« Reply #3 on: 19. July 2018, 21:32:38 »
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Yes, I was listening on 7.180, and I heard a station that I know works 7168.
I tuned to 7168, and there he was.
I tuned back to 7180 and there he still was over top of the station on 7180
73
CHuck
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DB4PLE
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Urgestein
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Re:Receiving strong sigs 12.KHZ
« Reply #4 on: 19. July 2018, 21:45:21 »
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Hi Chuck,
- Any chance that the station at 7168 was transmitting a second strong signal 12khz from its main frequency?
- Did you had the opportunity to verify with a second receiver that only the 0.6 mchf heard the signal at 7180? If not, you should really try to see if this also happens if use a signal generator or second transmitter.
73
Danilo
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WD8BXS
alter Hase
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Re:Receiving strong sigs 12.KHZ
« Reply #5 on: 20. July 2018, 11:55:09 »
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I will try to duplicate this again later today.
I will keep you posted.
Thanks,
73,
Chuck
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WD8BXS
alter Hase
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Re:Receiving strong sigs 12.KHZ
« Reply #6 on: 20. July 2018, 15:00:50 »
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I can tune any station on my Icom 7610, and hear them 12khz higher AND 12khx lower on my MCHF !!!
This is regardless of where the translate is set.
Chuck
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WD8BXS
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Re:Receiving strong sigs 12.KHZ
« Reply #9 on: 20. July 2018, 18:05:54 »
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Swapped out a "U" Board, NO Change.
I will have to build an RF Board.
73,
Chuck
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DJ3FV
alter Hase
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Never underestimate an old man...
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Re:Receiving strong sigs 12.KHZ
« Reply #10 on: 21. July 2018, 06:15:00 »
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Hi Chuck,
is your radio a chinese clone (RS-918) based on the V0.6 mcHF? I am asking because I read that in this radios parts have been replaced by cheeper chinese parts. This could be a root cause for such effects.
73, Uwe
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| « Last Edit: 21. July 2018, 06:20:20 by DJ3FV » |
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Immanuel Kant
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WD8BXS
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Re:Receiving strong sigs 12.KHZ
« Reply #11 on: 21. July 2018, 13:32:23 »
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Hi,
This is NOT a clone! I built it!
73,
Chuck
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WD8BXS
alter Hase
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Re:Receiving strong sigs 12.KHZ
« Reply #12 on: 21. July 2018, 17:26:06 »
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OK, The verdict is in.
I just finished another RF board and it does NOT have the spurious receive!!!
Now what area do I start looking??
Or do I just randomly poke around??
CHuck
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WD8BXS
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Re:Receiving strong sigs 12.KHZ
« Reply #13 on: 21. July 2018, 20:19:17 »
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I was wrong, the new one does it also!!!!
Chuck
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De WD8BXS vy 73
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WD8BXS
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Re:Receiving strong sigs 12.KHZ
« Reply #14 on: 21. July 2018, 20:22:50 »
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There is no s meter reading for the extra signal.
Just on the main signal.
Chuck
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De WD8BXS vy 73
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