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Re: MH-31 Microphone low output

Sid Boyce
 

Hi David,
It's something I'll bother him about later as we recently were chasing a problem on a PiHPSDR v2 connected to HermesLite2 which turned out to be a tick box for local microphone selection not showing up on that screen.
When I took a screen snapshot it was there - so it was just a problem with contrast.
Two Raspberry Pi official LCD's, one OK and the other with the problem.
73 ... Sid.

On 18/09/2020 14:49, David Fainitski wrote:
Hi, Sid
I can't believe it, even Quisk has this option. Did you try to reach g0orx ? This is the serious issue.
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: Re-flashing bricked ODY-2

David Fainitski
 

Hello, Steven.
Please check the reset pin of MCU.


Re: MH-31 Microphone low output

David Fainitski
 

Hi, Sid
I can't believe it, even Quisk has this option. Did you try to reach g0orx ? This is the serious issue.


Re: Re-flashing bricked ODY-2

Sid Boyce
 

Hi Steve,
That's a more fitting description of what I am seeing.
I have no idea what Bootloader version was loaded when it returned from David a very long time ago.
73 ... Sid.

On 17/09/2020 22:26, Steven Wilson wrote:
I had the same issue with my older mcu code.  It wasn't so much garbled..but looked like many pixels missing. It aged. Odyssey displayed cleanly though.

On Thu, Sep 17, 2020, 2:09 PM Sid Boyce <boyce.sid@... <mailto:boyce.sid@...>> wrote:

One problem here, Bootloader display is all garbled, only ODYSSEY
display is OK.
73 ... Sid.

On 17/09/2020 15:44, David Fainitski wrote:
> Hello, Neoklis
> Read this first
>
https://groups.io/g/ody-sdr/topic/program_2_1_20_anp_into_a/76521763?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,0,0,76521763

>
>


--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks






--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: Re-flashing bricked ODY-2

Steven Wilson
 

I had the same issue with my older mcu code.  It wasn't so much garbled..but looked like many pixels missing. It aged. Odyssey displayed cleanly though.


On Thu, Sep 17, 2020, 2:09 PM Sid Boyce <boyce.sid@...> wrote:
One problem here, Bootloader display is all garbled, only ODYSSEY
display is OK.
73 ... Sid.

On 17/09/2020 15:44, David Fainitski wrote:
> Hello, Neoklis
> Read this first
> https://groups.io/g/ody-sdr/topic/program_2_1_20_anp_into_a/76521763?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,0,0,76521763
>
>


--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks







Re: Re-flashing bricked ODY-2

Sid Boyce
 

One problem here, Bootloader display is all garbled, only ODYSSEY display is OK.
73 ... Sid.

--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: MH-31 Microphone low output

Sid Boyce
 

Hi David,
Not in pihpsdr.
Just the Local Microphone  and Compression.
I have not tried adjusting Compression to see if that would give a usefull boost.
73 ... Sid.

On 17/09/2020 14:28, David Fainitski wrote:
Sid, is there no 20db preamp option ?
Should be there.
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: Re-flashing bricked ODY-2

Steven Wilson
 

David,

The radio is currently bricked.  I made the mistake of trying to program it with the radio plugged in and turned on.  

I'm also pretty sure that the Pickit 3 isn't any good in the first place.  Tell me - should it show up as a COM port when I plug it in?? It isn't showing up in the Device Manager at all, nor working under Linux either.

Steve


Re: Re-flashing bricked ODY-2

David Fainitski
 

Hello, Neoklis
Read this first
https://groups.io/g/ody-sdr/topic/program_2_1_20_anp_into_a/76521763?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,0,0,76521763


Re: MH-31 Microphone low output

David Fainitski
 

Sid, is there no 20db preamp option ?
Should be there.


Re-flashing bricked ODY-2

Neoklis Kyriazis
 

Hi all

After several months of waiting (since January 2020!) I at last received the
PICkit and USB blaster that are needed to re-flash my ODY-2, which I bricked
last year. I ordered from Ali Express but was interrupted by the virus!

Anyhow, to avoid making more mistakes and possibly ruining the ODY-2,
I wonder if there are any detailed instructions I can use to repair the SDR.
And also suggestions of what firmware to use for the repair.

My thanks in advance!

--
Best Regards
Neoklis - Ham Radio Call:5B4AZ
http://www.5b4az.org/
https://www.qsl.net/5b4az/index.html


Re: MH-31 Microphone low output

Sid Boyce
 

Thanks Reto,
As I am using the pihpsdr, I'll do the mod with the electret mic.
73 ... SId.

On 16/09/2020 21:29, Reto HB9TRT wrote:
Hi Sid,
also no problems here with the MH31. Good modulation and normal power output at the 1W PA from Ody-2.

vy 73
Reto
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: MH-31 Microphone low output

Sid Boyce
 

Thanks David,
That's absent from pihpsdr.
73 ... Sid.

On 16/09/2020 14:57, David Fainitski wrote:
Hello, Sid.
My MH-31 mic was tested with PowerSDR Wich has "mic 20db preamp" settings and also program mic amplification settings.
No any problems.
Dynamic microphones like MH-31 required 20db preamp option on, unlike electret microphones.
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: MH-31 Microphone low output

Sid Boyce
 

Thanks Neoklis,
Looks great, I'll do that mod.
73 ... Sid.

On 16/09/2020 14:23, Neoklis Kyriazis via groups.io wrote:
Has anyone experienced low microphone level from the MH-31?
No, but I found this article that may confirm your problems.
https://www.iarc.org/~4x1mk/modifying_the_MH-31_Yaesu_microphone.html

--
Best Regards
Neoklis - Ham Radio Call:5B4AZ
http://www.5b4az.org/
https://www.qsl.net/5b4az/index.html

--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: MH-31 Microphone low output

Reto HB9TRT
 

Hi Sid, 
also no problems here with the MH31. Good modulation and normal power output at the 1W PA from Ody-2. 

vy 73
Reto


Re: MH-31 Microphone low output

David Fainitski
 

Hello, Sid.
My MH-31 mic was tested with PowerSDR Wich has "mic 20db preamp" settings and also program mic amplification settings.
No any problems.
Dynamic microphones like MH-31 required 20db preamp option on, unlike electret microphones.


Re: MH-31 Microphone low output

Neoklis Kyriazis
 

Has anyone experienced low microphone level from the MH-31?
No, but I found this article that may confirm your problems.
https://www.iarc.org/~4x1mk/modifying_the_MH-31_Yaesu_microphone.html

--
Best Regards
Neoklis - Ham Radio Call:5B4AZ
http://www.5b4az.org/
https://www.qsl.net/5b4az/index.html


MH-31 Microphone low output

Sid Boyce
 

Has anyone experienced low microphone level from the MH-31?

With the ODY-2's 1W I get no movement with the SWR meter set to 5W PEP full scale.

My setup ODYSSEY-2 --> 100W PA ex-IC737. At first I thought the problem was with the PA.

If I scream into the MH-31, I can talk it up beyond full output, speaking normally or blowing equivalently I get only a few watts output.

Using local audio electret mic to a USB audio dongle  with the PiHPSDR v2 I can drive the amp close to 200W PEP into a dummy load speaking at a normal voice .

73 ... Sid.

--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


Re: AML-30

Reto HB9TRT
 

Hi David, 

Thanks for the Input. I'll check this. I solder the transformers by iron and with some flux. But it could be that the solderwork is not perfect. 
DO you think that the currend of arround 15mA is ok? Or shud it be more? So I could have a chance that the AMP works and the problem is on another place. Maybe the transformers. 

vy 73
Reto


Re: AML-30

David Fainitski
 

Hello, Reto.
For test the amp, touch each the input ports with a screwdriver, the signal streight should be identical.
The SMD transformers can not to be soldered with hot air. If some drop of flux will be appeared on wire, a transformer wil die after heating.
Only manual soldering with minimum flux using.