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TOPIC: Power supply voltage

Power supply voltage 18 Apr 2021 18:36 #1

  • Gerben
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I have see comments that the low output power was due to the power supply voltage, which should be 15V for full output. However, in a product comparison tabel on this web site I see the following:
SunSDR2 QRP: 12V
SunSDR2 PRO: 15V
Sun SDR2 DX: 13.8V
Question: the DX version can't handle 15V?
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Power supply voltage 18 Apr 2021 18:54 #2

  • DD5MD
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Hi,

Please refer to page 14 of the SunSDR2 DX user manual.

You must make sure that you check the power coming to the SunSDR2 DX with a voltmeter, because the display in the ExpertSDR2 software does not show correctly.

The SunSDR2 DX shows in the ExpertSDR2 software about 0.5V less than actually arrive.

I have connected this voltmeter with Powerpole connectors between power supply and SunSDR2 DX:

shop.funk24.net/powerpole-leistungsmesser/wattmeter?number=SW11554

Kind regards

Mathias, DD5MD

Bildschirmfoto2021-04-18um20.43.28.jpg
73 Mathias DD5MD
2x SunSDR2 DX
ExpertSDR2 Update 11
MacBook Pro (16", 2019), 2,6GHz Intel Core i7, 16 GB RAM
macOS Monterey 12.6
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Power supply voltage 19 Apr 2021 18:34 #3

  • Gerben
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Hi Mathias,

Thanks for the info. It is just confusing to see that there are different messages. I will make sure I will not go over 13.8V with the DX version.

Regards,

Gerben - PG5M
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