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ТЕМА: Maximum output

Maximum output 25 Нояб 2019 16:40 #1

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I've been playing around with my new Sun SDR Pro DX on the last day or two. I don't think to be able to get the radio to transmit much more than 20 W when using voice through a PC microphone headset. I plugged a modmic into the radio and to be honest I couldn't really see much difference between the two microphones. I've searched through the settings but I can't seem to find anywhere where I can really boost the modulation. It's probably me, I have probably missed something. However, if somebody could point me in the right direction I would be very grateful. In the meantime, I'll keep trying to find the settings myself
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Maximum output 03 Дек 2019 21:48 #2

  • EI9HEB
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Hi I can confirm I have simmilar issue.
I have installed the latest version (update 3) and in SSB it is hard to get more 20W.
I have tested with a 50-ohm dummy load on all bands.
AM - full power
FM - full power
CW -full power
SSB - usually around 20W peak power 50W but that need a whistle.
AGC is enabled
Attack 1ms
Release 50ms
Hangtime 100ms
Amplitude 0 or 3dB
MIC2 input Yaesu MH-31 switch to position 1 and slider set to full scale.
Tune - works fine, sometimes even too much power 120W.
EI9HEB
How do you VooDoo?
Последнее редактирование: 03 Дек 2019 21:50 от EI9HEB.
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Maximum output 04 Дек 2019 04:15 #3

  • ik7ytt
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Try to disable agc and will see the full power for sure.

Problems are the ssb settings. Not easy to get good audio and full power on same time.
You have to make many attempts
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Maximum output 04 Дек 2019 09:54 #4

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Is this a bug in the latest version of the software or does it require correct tuning by the user?. I wonder if someone on the DX hardware on SSB has full power and good audio report?
Последнее редактирование: 04 Дек 2019 09:57 от e72x.
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Maximum output 04 Дек 2019 11:31 #5

  • Rome
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Can you test the output power with an external power-meter?
We know that the power-meter for SSB is not perfect, we'll improve it in the next firmware "update".
Роман, Roman
Expert Electronics
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Maximum output 04 Дек 2019 13:01 #6

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@ e72x
Is this a bug in the latest version of the software or does it require correct tuning by the user?. I wonder if someone on the DX hardware on SSB has full power and good audio report?
That was tested on the DX model.
@Rome
My test were done with external meter and 50Ohm dummy load.
And i can confirm that software show even lower power then external meter but that not an issue for me.
I have also changed the the TX bandwidth but did not notice major difference.
But that had impact on other transceivers I'm suing like Kenwood ts 870 when i transmit 4.2Khz wide the power is up to 50W only.

On sunSdr2 DX I did not notice major impact on power vs bandwidth.
As I said it hard to get more than 50 but it is possible.
How do you VooDoo?
Последнее редактирование: 04 Дек 2019 13:08 от EI9HEB.
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Maximum output 04 Дек 2019 14:13 #7

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Nominal (PEP) HF output power is 100 W, in SSB mode it might differ from 30 W up to 80 W, depending on the PROC settings and signal type (whistle or voice).
Роман, Roman
Expert Electronics
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Maximum output 04 Дек 2019 19:07 #8

  • xuanca
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A question that arises by reading this, the SunSDR2 DX does not give 100W of power, as it is said in the specifications or what is being talked about refers to the SunSDr2 PRO?
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Maximum output 04 Дек 2019 20:31 #9

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The conversation is about SUNSDR2 DX the new 100W model.
It will be not true saying that is not giving 100W.
Gives 100W on CW, AM and FM.
During the TUNE, even more, I have seen 120W.
During normal usage on SSB, it is hard to get 100W only in peaks.
It is all about settings, using clipper I was able to get closer to 100W.
Also, the software meter show actually less power than real output power.
How do you VooDoo?
Последнее редактирование: 04 Дек 2019 20:48 от EI9HEB.
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Спасибо сказали: Rome

Maximum output 04 Дек 2019 21:13 #10

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Hello
you have to use a peak wattmeter, otherwise in ssb you will only see 20 to 30W in the peaks. If you read more ... then hello the damage, you will send splatters everywhere. Everything you see is absolutely normal. I have a Sunsdr2Pro, and you have the same thing with the built-in amp. Reassure yourself, this hardware and software is the TOP..
Jean-Marie
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Спасибо сказали: Rome

Maximum output 04 Дек 2019 21:58 #11

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I agree with that, I have done more test this evening, And everything looks ok.
How do you VooDoo?
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Maximum output 04 Дек 2019 22:35 #12

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Thanks for the replies, I am waiting to receive a SunSDR2 DX and I had worried

EA1AHA
Juan Carlos
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