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TOPIC: Spikes auf Band 15m / 12m / 10m

Spikes auf Band 15m / 12m / 10m 23 Oct 2020 16:21 #1

Kann mir jemand sagen wo die spikes auf 10m - 15m herkommen ?

Vielen Dank im voraus....73 de Hans DL5RDQ

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Spikes auf Band 15m / 12m / 10m 23 Oct 2020 16:29 #2

  • EI9HEB
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Disconnect the antenna and check again.
Now days could be from anything.
Cheap PSU and led lights etc.
How do you VooDoo?
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Spikes auf Band 15m / 12m / 10m 23 Oct 2020 16:52 #3

Hello, antenna disconnected !

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Spikes auf Band 15m / 12m / 10m 23 Oct 2020 18:16 #4

  • F1DJY
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I had this problem with a DELL display. No problem with a Philips.
73 Jean-Marie F1DJY
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Spikes auf Band 15m / 12m / 10m 24 Oct 2020 06:55 #5

Hello, sorry leider keine Lösung !

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73 de Hans DL5RDQ
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Spikes auf Band 15m / 12m / 10m 24 Oct 2020 06:56 #6

Hello, sorry keine Lösung !

73 de Hans DL5RDQ
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Spikes auf Band 15m / 12m / 10m 24 Oct 2020 11:05 #7

  • F1DJY
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Do you have DELL screens? For my case I have not found a solution with these screens. The ferrites gave nothing. The solution may be to move the antenna about twenty meters away. With switching power supplies you have to be very careful, some are perfect (Toshiba, FlatPack2) others, many, are appalling in RFI. For screens, Mac screens are doing very well because they are shielded, My philips is doing very well too. now you need ferrites at each input of the Sunsdr2
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Spikes auf Band 15m / 12m / 10m 24 Oct 2020 11:13 #8

  • iw7dmh
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Maybe one of the cheap power wall adapter, typically used for powered speakers, wireless keyboard charger, ethernet switch/router that are near the computer used for EESDR.
I thrown them all away and now I am using a dual voltage TracoPower PSU (12V/5V - TXL 035-0512D).
Now far better than before.

73' de Enzo iw7dmh
Last Edit: 24 Oct 2020 11:15 by iw7dmh.
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Spikes auf Band 15m / 12m / 10m 01 Apr 2021 10:56 #9

  • DO6BJ
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Hallo Hans,
das könnte ein Netzteil sein, aber auch ein Computer, Monitor, Monitorkabel oder TV.
73 Thomas
Last Edit: 01 Apr 2021 10:59 by DO6BJ.
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Spikes auf Band 15m / 12m / 10m 01 Apr 2021 12:32 #10

  • N8SDR
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Looks like a cheap wal wart-

other possibilities- your Radio Power supply- failing filtering capacitator
CHEAP power supply in the computer or again bad power adapter for the laptop if you using one of them
Florescent lights- some LED lights

If your using a laptop- try unplugging the power adapter
Start tuning off things in the shack or house
start at breaker panel and flip through them watching the display- if it drops when you turn off a certain breaker find objects on that circuit
as others mentioned some Displays can cause this as well-

do you have a solar panel and a controller or possibly a neighbor- also Grow lights
there are a crap load of non filtered devices on the market today that cause Spikes and birdies (what I see in the display are birdies) There are a number of really crappy radio Power supplies MFJ has had several that are full of birdies - do you possibly have a battery you could try running the rig from at least on RX turning off your power supply and see if it disappears?
Please do not email me and ask for help I no longer will be part of this, If I could delete /remove my profile I would do so.
Last Edit: 01 Apr 2021 12:34 by N8SDR.
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