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TOPIC: Sunsdr2 PRO - No output power on HF

Sunsdr2 PRO - No output power on HF 25 Apr 2022 11:02 #16

  • G3RCE
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Hello Roman
I received my repaired Sunsdr2pro (faulty relay replaced) back from Martin Lynch 2 weeks
Working perfectly, best of all GUIs
Switched on last night and same problem as before, no HF power output
ON transmit!
Is this a design problem? as this happened before?
2 m output ok 9 watts
It was purchased 4 months ago from Martin Lynch
73
Rob G3RCE
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Sunsdr2 PRO - No output power on HF 26 Apr 2022 07:45 #17

  • Rome
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Hello Rob.
1. Check output power using a DAC OUT connector.
2. Select HF antenna, set Drive=0, press MOX.
What is the current draw of the TRX?

That doesn't seam right, that relay failed right after the replacement, it's probably the first case in 7 years of SS2PRO model existence.
Роман, Roman
Expert Electronics
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Sunsdr2 PRO - No output power on HF 29 Apr 2022 11:08 #18

  • G3RCE
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Hello Roman
As it is Still under warranty
and I don't have any test equipment or leads
I will return it to Martin Lynch
I've had several failures with Sunsdrqrp, Sunsdr2DX over the years but your support
is the best, thank you
Rob G3RCE
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Sunsdr2 PRO - No output power on HF 29 Apr 2022 12:36 #19

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Hello Rob.
I'm really sorry about this situation.
We'll get in touch with ML&S to make sure that TRX has the fastest recovery.
Роман, Roman
Expert Electronics
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