[hpsdr] Hpsdr Digest, Vol 189, Issue 11
Tony Hagen
prosdr at gmail.com
Wed Nov 10 21:20:35 PST 2021
Hi Kjell,
Thanks for posting the Gerber
JL PCB and many other pcb fabricators are not accepting your GERBER files -
they are not able to identify the layers as the naming convention which is
being followed is not there
probably you can look into the gerber you posted for munin III in github
73
Tony
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Subject: Hpsdr Digest, Vol 189, Issue 11
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Today's Topics:
1. Munin III (Kjell Karlsen)
2. Re: PennyWhistle MOSFET's (Riho B., ES7AAZ)
3. Re: PennyWhistle MOSFET's (Riho B., ES7AAZ)
4. Re: PennyWhistle MOSFET's (Riho B., ES7AAZ)
----------------------------------------------------------------------
Message: 1
Date: Wed, 10 Nov 2021 17:37:59 +0100
From: Kjell Karlsen <la2ni at online.no>
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] Munin III
Message-ID: <a71d86ec-d4f0-a8a3-58db-4331efa06e5d at online.no>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hi All.
I have uploaded Munin III BOM to github: https://github.com/LA2NI/Munin-III
73, Kjell
------------------------------
Message: 2
Date: Wed, 10 Nov 2021 19:28:28 +0200
From: "Riho B., ES7AAZ" <es7aaz at gmail.com>
To: Helmut Oeller <dc6ny at gmx.de>
Cc: Hpsdr Mailing List <hpsdr at lists.openhpsdr.org>
Subject: Re: [hpsdr] PennyWhistle MOSFET's
Message-ID:
<CAOOH28Dg8s0R8q32qoV3Ek_=+Z0sbd1RETJWQBOj1NxekQ-6RA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Helmut, I don't have much lab instruments currently here. But I have a
small 50? sma dummy load soldered to the piece of coax. If Penelope sees
50? dummy load the TX carrier signal looks damn clean. So, there is nothing
wrong with Penelope here. If I connecting the Penelope to the PennyWhistle
and sending singal out into the 20m delta loop and using small indoor
antenna for RX the TX carrier looks terrible.
Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
november 2021 kell 18:33:
> In Duplex there is only 15cm coax and opened T/R relay here So, no
> Mercury overdrive, more likely underload.
>
> --
> *73,*
> *Riho ES7AAZ*
>
> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10. november
> 2021 kell 18:20:
>
>> Not sure that you interpret TX display in Duplex mode correctly !?
>>
>> 73, Helmut
>> Am 10.11.2021 um 17:08 schrieb Riho B., ES7AAZ:
>>
>> Helmut, thanks for all tips and suggestions. Sure, I will take a look
>> into it what's going on here. Fortunately I have a Pinocchio as well for
>> measurements and troubleshooting. Yes, the PowerSDR shows the signal how
>> it's going out from DSP. In Duplex mode it shows how the signal going
>> out
>> from the radio.
>>
>> --
>> *73,*
>> *Riho ES7AAZ*
>>
>>
>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10.
>> november 2021 kell 17:07:
>>
>>> Riho, don't give up! Penelope and Pennylane were (are) fine boards.
>>> Search for the reason. Check as already suggested signal quality at the
>>> input of amp U6 (OPA2674), check 12V supply voltage for ripple etc. and
>>> output match (T2). When I recall correctly PowerSDR shows the base-band
>>> signal in TX mode and not the real output signal. Hence I would
>>> recommend to use an external analyzer to evaluate the RF signal.
>>>
>>> 73, DC6NY
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
--
*73,*
*Riho ES7AAZ*
*www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*
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Message: 3
Date: Wed, 10 Nov 2021 21:08:16 +0200
From: "Riho B., ES7AAZ" <es7aaz at gmail.com>
To: Helmut Oeller <dc6ny at gmx.de>
Cc: Hpsdr Mailing List <hpsdr at lists.openhpsdr.org>
Subject: Re: [hpsdr] PennyWhistle MOSFET's
Message-ID:
<CAOOH28BeQzTo=DggbNnuicjF2dr1p0_RosFM4XeW5A6XcyoBxA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Helmut, it was a good idea to trace the DAC output. Thanks! I'm much
clearer now. BTW, I'm using a Mercury for that which is actually a very
good spectrum analyzer.
--
*73,*
*Riho ES7AAZ*
Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
november 2021 kell 19:28:
> Helmut, I don't have much lab instruments currently here. But I have a
> small 50? sma dummy load soldered to the piece of coax. If Penelope sees
> 50? dummy load the TX carrier signal looks damn clean. So, there is
> nothing
> wrong with Penelope here. If I connecting the Penelope to the PennyWhistle
> and sending singal out into the 20m delta loop and using small indoor
> antenna for RX the TX carrier looks terrible.
>
> Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
> november 2021 kell 18:33:
>
>> In Duplex there is only 15cm coax and opened T/R relay here So, no
>> Mercury overdrive, more likely underload.
>>
>> --
>> *73,*
>> *Riho ES7AAZ*
>>
>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10.
>> november 2021 kell 18:20:
>>
>>> Not sure that you interpret TX display in Duplex mode correctly !?
>>>
>>> 73, Helmut
>>> Am 10.11.2021 um 17:08 schrieb Riho B., ES7AAZ:
>>>
>>> Helmut, thanks for all tips and suggestions. Sure, I will take a look
>>> into it what's going on here. Fortunately I have a Pinocchio as well for
>>> measurements and troubleshooting. Yes, the PowerSDR shows the signal
>>> how
>>> it's going out from DSP. In Duplex mode it shows how the signal going
>>> out
>>> from the radio.
>>>
>>> --
>>> *73,*
>>> *Riho ES7AAZ*
>>>
>>>
>>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10.
>>> november 2021 kell 17:07:
>>>
>>>> Riho, don't give up! Penelope and Pennylane were (are) fine boards.
>>>> Search for the reason. Check as already suggested signal quality at the
>>>> input of amp U6 (OPA2674), check 12V supply voltage for ripple etc. and
>>>> output match (T2). When I recall correctly PowerSDR shows the base-band
>>>> signal in TX mode and not the real output signal. Hence I would
>>>> recommend to use an external analyzer to evaluate the RF signal.
>>>>
>>>> 73, DC6NY
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
> --
> *73,*
> *Riho ES7AAZ*
> *www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*
>
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Message: 4
Date: Wed, 10 Nov 2021 23:32:58 +0200
From: "Riho B., ES7AAZ" <es7aaz at gmail.com>
To: Helmut Oeller <dc6ny at gmx.de>
Cc: Hpsdr Mailing List <hpsdr at lists.openhpsdr.org>
Subject: Re: [hpsdr] PennyWhistle MOSFET's
Message-ID:
<CAOOH28AWtbHsSzrC7G3V8kcLNUM8NUBmWQ+SaOLieAmXV9Nvrg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Helmut, while tracing the DAC output in the two tone test it seems like it
looses the packages at some point in the DSP chain and/or DSP doesn't work
correctly. Noise floor jumps up and down sometimes in the baseband. That
may be the cause why the IMD products are dancing there sometimes at the
output of the Penelope.
--
*73,*
*Riho ES7AAZ*
Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
november 2021 kell 21:08:
> Helmut, it was a good idea to trace the DAC output. Thanks! I'm much
> clearer now. BTW, I'm using a Mercury for that which is actually a very
> good spectrum analyzer.
>
> --
> *73,*
> *Riho ES7AAZ*
>
>
> Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
> november 2021 kell 19:28:
>
>> Helmut, I don't have much lab instruments currently here. But I have a
>> small 50? sma dummy load soldered to the piece of coax. If Penelope sees
>> 50? dummy load the TX carrier signal looks damn clean. So, there is
>> nothing
>> wrong with Penelope here. If I connecting the Penelope to the
>> PennyWhistle
>> and sending singal out into the 20m delta loop and using small indoor
>> antenna for RX the TX carrier looks terrible.
>>
>> Kontakt Riho B., ES7AAZ (<es7aaz at gmail.com>) kirjutas kuup?eval K, 10.
>> november 2021 kell 18:33:
>>
>>> In Duplex there is only 15cm coax and opened T/R relay here So, no
>>> Mercury overdrive, more likely underload.
>>>
>>> --
>>> *73,*
>>> *Riho ES7AAZ*
>>>
>>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10.
>>> november 2021 kell 18:2
>>>
>>>> Not sure that you interpret TX display in Duplex mode correctly !?
>>>>
>>>> 73, Helmut
>>>> Am 10.11.2021 um 17:08 schrieb Riho B., ES7AAZ:
>>>>
>>>> Helmut, thanks for all tips and suggestions. Sure, I will take a look
>>>> into it what's going on here. Fortunately I have a Pinocchio as well
>>>> for
>>>> measurements and troubleshooting. Yes, the PowerSDR shows the signal
>>>> how
>>>> it's going out from DSP. In Duplex mode it shows how the signal going
>>>> out
>>>> from the radio.
>>>>
>>>> --
>>>> *73,*
>>>> *Riho ES7AAZ*
>>>>
>>>>
>>>> Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuup?eval K, 10.
>>>> november 2021 kell 17:07:
>>>>
>>>>> Riho, don't give up! Penelope and Pennylane were (are) fine boards.
>>>>> Search for the reason. Check as already suggested signal quality at
>>>>> the
>>>>> input of amp U6 (OPA2674), check 12V supply voltage for ripple etc.
>>>>> and
>>>>> output match (T2). When I recall correctly PowerSDR shows the
>>>>> base-band
>>>>> signal in TX mode and not the real output signal. Hence I would
>>>>> recommend to use an external analyzer to evaluate the RF signal.
>>>>>
>>>>> 73, DC6NY
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
--
*73,*
*Riho ES7AAZ*
*www.qrz.com/ES7AAZ <https://www.qrz.com/db/ES7AAZ>*
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