[hpsdr] HPSDR(Mercury, Pannylane, adn Metiz) and PowerSDR version

[Riho B., ES7AAZ]

Helmut,

it's quite out of the subject and a noise here,  I've been in München for a
month to learn the mobile cellular stuff in Siemens training centre.
Unfortunately I've never learned German language. I can only speak the
basic stuff in German language. Anyway, I enjoyed München much at the time.
--
*73,*
*Riho ES7AAZ*
*www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*

Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuupäeval N, 21.
oktoober 2021 kell 21:31:

> Helmut,
>
> P.S. BBC 4 speakers are on 198kHz AM in Europe and their quality is
> superb. It's always good to listen the native english speakers, HI.
>
> P.P.S. Just kidding.
> --
> *73,*
> *Riho ES7AAZ*
> *www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*
>
>
> Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuupäeval N, 21.
> oktoober 2021 kell 14:16:
>
>> Hi Helmut,
>>
>> yeah, 2400Hz SSB TX is a kind of overkill, I switched back to 2700Hz SSB
>> TX. Today I had a 20m QSO with LA3XIA. He was very amazed that I'm running
>> only 16W into vertical delta loop. He gave me 59, but there was QSB and he
>> said, "You have a very good quality signal, even if the signal drops down
>> to 55 it sounds like 59+20". It's a quite heavy, but still good compression
>> (CFC) what does that. In short, PowerSDR mRX does a great job in low TX
>> power configuration.
>>
>> Take care, CU!
>> --
>> *73,*
>> *Riho ES7AAZ*
>> *www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*
>>
>> Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuupäeval K, 20.
>> oktoober 2021 kell 16:55:
>>
>>> Hi Helmut,
>>>
>>> yes, the conventional PC electret microphone is what I'm using here.
>>> It's quite cheap one, but gives very good overall SSB results. However,
>>> W1AEX using higher end external audio system there via VAC.
>>>
>>> --
>>> *73,*
>>> *Riho ES7AAZ*
>>>
>>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuupäeval K, 20.
>>> oktoober 2021 kell 16:12:
>>>
>>>> Hi Riho,
>>>>
>>>> the approach is certainly ok, however allow me two remarks:
>>>>
>>>> That mentioned 2,7 kHz is the *net* bandwidth, i.e. difference between
>>>> the lower edge and the upper edge of the audio spectrum. No problem to use
>>>> 100 - 2800 Hz.
>>>>
>>>> Each microphone has an individual frequency response. This 'input'
>>>> can/will significantly modify these praised W1AEX profiles. All HPSDR stuff
>>>> applies the TI audio codec TLV320 with a 14 kohms input resistance. This
>>>> device is developed in particular for high impedance electret microphones
>>>> and each mismatch (e.g. with dynamic mic) deforms the frequency response
>>>> dramatically. New adjustment is always advisable.
>>>>
>>>> 73, Helmut, DC6NY
>>>>
>>>>
>>>
>>
>>
>>
>
>
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