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TOPIC: operation "Pink noise" ESDR3 v 0.10.0

operation "Pink noise" ESDR3 v 0.10.0 07 Dec 2021 12:14 #31

  • John-KC2QMA
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My mock up of the meters is just a general idea for the meters.
I'm sure there will be a much cleaner way to show meters.
Transceiver: MB1 Prime 2021
HF Amplifier: Ameritron AL-1200
HF Antennas:10-80 Vertical, 10-80 Fan Dipole
VHF Antenna: Commet GP-9
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operation "Pink noise" ESDR3 v 0.10.0 07 Dec 2021 21:26 #32

  • VK6NX
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English translation is added to the github.com/ExpertSDR3/ExpertSDR3-SUGGESTIONS/discussions/21

@R3IIN - makes sense to add this translation to your first post in discussion, it would be easier to read and follow the logic.
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operation "Pink noise" ESDR3 v 0.10.0 09 Dec 2021 21:19 #33

  • John-KC2QMA
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Just to clarify, 0dB is unity gain so think of it as a reference point, in our case with our Expert Electronics equipment I believe it is the point just before the P.A. in the transceiver begins A.G.C action to limit power output. Anything over 0dB should cause the P.A. to limit.

So if we have proper metering it will make it possible for the user get all of their MIC levels and processing levels set optimally without over driving the radio’s P.A. which as well all know makes for
good clean, liner output modulation.

As far as the MIC inputs on the radio I know on the MB1 Mic 2 is 600ohm and I think -10dB consumer reference level.
Transceiver: MB1 Prime 2021
HF Amplifier: Ameritron AL-1200
HF Antennas:10-80 Vertical, 10-80 Fan Dipole
VHF Antenna: Commet GP-9
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operation "Pink noise" ESDR3 v 0.10.0 10 Dec 2021 05:11 #34

  • R3IIN
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John-KC2QMA wrote:
As far as the MIC inputs on the radio I know on the MB1 Mic 2 is 600ohm and I think -10dB consumer reference level.
Yes! that 's exactly it ! 600 ohms , but this parameter affects that at this load the microphone at a certain amplitude has its own frequency response ! What you see is the level -
minus 10 dB on your voice, do you think this level is optimal, I assume that the Mic meter indicator works in the RMS mode, I have long suggested that the simultaneous readings of the RMS and PEAK indicator of the Mic meter indicator work in the work of the Mic meter indicator, I am very much waiting for the next version of the program, I think the Mic meter readings will be corrected there, the Boost indicator will also equate the transmitter panarama to the correct readings, make the correct levels of the Proc module.
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operation "Pink noise" ESDR3 v 0.10.0 10 Dec 2021 11:15 #35

  • John-KC2QMA
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Nice to meet you Igor.
Yes every microphone will have different frequency response and output even have impedance from 100ohms to 1000ohms and then there is how loudly you speak into the mic and the pitch of your voice... NONE of that matters as long as there is a defined mic input reference such as -10db or +4db at a given input impedance then it’s relatively simple calibrate the meters for a 0db unity gain reference.

Yes Peak & RMS meters would be awesome!
Here is an example from the expert in the field of audio metering design Mike Darrough.

Transceiver: MB1 Prime 2021
HF Amplifier: Ameritron AL-1200
HF Antennas:10-80 Vertical, 10-80 Fan Dipole
VHF Antenna: Commet GP-9
Last Edit: 10 Dec 2021 11:15 by John-KC2QMA.
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operation "Pink noise" ESDR3 v 0.10.0 17 Dec 2021 13:40 #36

  • R3IIN
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N8SDR Rick! I wrote to you by email there are questions for you! Thank you for the answer sincerely Igor
Last Edit: 17 Dec 2021 13:43 by R3IIN.
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