[hpsdr] Hermes Monitor Volume mRX

[Helmut, DC6NY]

Nige,

ok, I understand. I'm using the headphone outputs (RHP/LHP OUT) directly
connected to the codec TLV320 without any issue. That means, I can control
the MON AF by means of the Master glider down to mute. The reason is that
this output is controlled by an 6 to -73 dB 1dB step on-board attenuator.
This control devise seems to be used by P*SDR. The AF power amp feeding a
speaker is also driven by the codec TLV320, but this step attenuator is not
involved into signal path.
I assume normal RX AF volume control of the internal speaker amp is ok (hi),
so that the MON AF control should be done in a similar manner.

Perhaps Doug, W5WC, can reflect on your spot. 

73, Helmut, DC6NY

-----Ursprüngliche Nachricht-----
Von: Nige G7CNF [mailto:g7cnf.nige at gmail.com] 
Gesendet: Montag, 29. Juli 2013 11:29
An: Helmut, DC6NY
Cc: hpsdr at lists.openhpsdr.org; apache-labs at yahoogroups.com
Betreff: Re: AW: [hpsdr] Hermes Monitor Volume mRX

Helmut.

The AF is taken from the speaker outputs on the ANAN, one via 3.5mm jack the
other via the IDC breakout. The master AF controls the output but set on its
lowest setting of 1 the output is painfully loud and not usable. Regrettably
the RX1 AF and RX2 AF are incorrectly linked to the VAC RX gain and screw up
the audio levels if adjusted thus the only control is via Master AF.

It was mentioned by another person a couple of weeks ago that the VAC RX
gain is linked to the RX1 AF level when these functions should be
independent of each other. I believe the only solution to the OP is to add
attenuation to the monitor function.

73

Nige.

On 29/07/2013 10:10, Helmut, DC6NY wrote:
> Hi Nige,
>
> I assume that you are using the VAC. Under this condition the 'Master AR'
> glider is without function. If you get your AF via the internal codec at
the
> phone socket you can adjust the monitor volume as you feel convenient.
>
> 73, Helmut, DC6NY
>
> -----Ursprüngliche Nachricht-----
> Von: hpsdr-bounces at lists.openhpsdr.org
> [mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von Nige G7CNF
> Gesendet: Montag, 29. Juli 2013 07:58
> An: hpsdr at lists.openhpsdr.org
> Cc: apache-labs at yahoogroups.com
> Betreff: [hpsdr] Hermes Monitor Volume mRX
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi.
>
> I'm finding the TX monitor volume using my ANAN-10 painfully loud even
with
> mRX set to just 1 while monitoring via the speakers. Would it be possible
to
> add some further (user-set) attenuation to the TX monitor function?
>
> 73
>
> Nige.
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