[hpsdr] Penelope sound quality

[ENDO]

Hi Joe ,

I modified Initozy11.bat to 0x14 from 0x15.
Apparently the audio becomes much better, however there is noise boosted(MIC
gain 25). With 0x15, the noise is not so annoying, but 0x14 I can here very
much the noise.
To be honnest with you, the sound of TS-940S monitored( IF output monitored
in TS-940S) with D-104 is MUCH MUCH better than Penelope sound.
That's what I can say tonight. Coming weekend, I'll change the current TAPR
made Penelope to another one that Gerd, DJ8AY made for further test.

Tokio ENDO
JA1CCA

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org]On Behalf Of Joe Martin K5SO
Sent: Monday, October 12, 2009 10:05 PM
To: hpsdr
Subject: Re: [hpsdr] Penelope sound quality


***** High Performance Software Defined Radio Discussion List *****

Tokio,

Joe K1RQG and I had a similar issue with audio levels and Joe pointed
out to me that if you modify the initozy11.bat file (e.g., in Notepad)
so that the lines for Ozy and Penny that formerly read

writeI2C 0xfffe 0x7 0x1a 0x2 0x08 0x15
and
writeI2C oxfffe 0x7 0x1b 0x2 0x08 0x15

read instead

writeI2C oxfffe 0x7 0x1a 0x2 0x08 0x14
and
writeI2C oxfffe 0x7 0x1b 0x2 0x08 0x14

the audio gain is scaled much better and there is no overamplification
nor distortion apparent.  With the front panel audio gain in PowerSDR
set at about 20 the levels seem to be just fine!   Nice quality TX
audio.

Give it a try!  It'll probably fix you up.

73,  Joe K5SO


On Oct 12, 2009, at 3:26 AM, ENDO wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> I forgot yo tell the 3rd order  IMD of Penelope. It is quite good ,
> more
> than 70dB. The output of TS-680S is 36dB.
>
> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org
> [mailto:hpsdr-bounces at lists.openhpsdr.org]On Behalf Of ENDO
> Sent: Monday, October 12, 2009 6:24 PM
> To: hpsdr
> Subject: [hpsdr] Penelope sound quality
>
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> I've just started to use Penelope for the transmission. So far I
> enjoyed
> Mercury for receiving.
>
> I had several SSB conversations on the air on 3.5MHz for the first
> time
> using Penelope. However my friends all told me the sound is worse than
> before. I used to use TS-940S and D-104, they reported the sound was
> good.
> I monitored the sound by depressing MON button on the PowerSDR
> panel. The
> sound is normal to me, then I monitored the transmission by using
> TS-940S,
> then it is not distored but not good audio, say, cracked.
>
> Do you have any suggestion to remedy the problem?
>
> My configuration is  the following;
>
> CPU Dell 8400 3.4GHz; CPU utilization is less than 20%.
> HPSDR Firmware; Ozy FX2 20090524, Ozy 16, Mercury 27, Penelope 12
> Mic Gain 10
> Power Indication around 20mW on PowerSDR
> MIcrophone D-104 inserted to MIC input of Penny
> PA is TS-680S, the phenomeno is almost same without TS-680S
> PowerSDR KD5TFD 22 Aug 2009
>
> Regards,
>
> Tokio ENDO
> JA1CCA
>
>
>
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