[hpsdr] Penelope sound quality

[Willi Reppel]

Hi Tokio,

I red on this reflector some months ago that the output power from Penelope 
should be set as high as possible to avoid audio distorsion. Following this 
advice, your
 output power of 20 mW seems to be too low. I am using myself a PA module of 
an old Icom 735 with an attenuator between Penelope and the input to the IC 
735 which allows me to set Penelope to its the maximum
output power of 400-500 mW.
I hope this info is useful for you.

vy 73 es gl de
SM6OMH  Willi

----- Original Message ----- 
From: "ENDO" <rfcgf600 at ybb.ne.jp>
To: "hpsdr" <hpsdr at openhpsdr.org>
Sent: Monday, October 12, 2009 11:24 AM
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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