[hpsdr] Latest Software

[Kjell Karlsen]

Hi Dough.

I have tested the latest software and it works very fine.

There is a difference from before in the calibration: After a calibration,  
a -70 dBm signal showed -70dBm with and without the 20 dB attenuator. In  
the new software, the signal strength drops to -97 dBm with the 20 dB  
attenuator. For the rest of the attenuation steps the drop is according to  
the settings.

I think the principle from the original calibration should be kept. It is  
very convenient to read the real signal strength at all the attenuator  
settings.

73, Kjell








På Fri, 16 Dec 2011 03:30:58 +0100, skrev Doug W5WC <w5wc at windstream.net>:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Phil,
>
> Thank you for the comments.
>
> With Alex selected the attenuator displays the following:
> 0dB
> -20dB - controls the relay on Mercury
> -10db - Alex
> -20db - Alex
> -30db - Alex -10db + -20db
> -40db - Alex/Mercury -20db + -20dB
> -50db - Alex/Mercury -10db + -20db + -20dB
>
> Alex - Band 20m, T3 was incorrectly controlling R3. This has been  
> corrected
> for future releases.
>
> 73, Doug W5WC
>
>
> I think I am running the latest software and it works great! But I do  
> have a
> couple of comments...
>
> I'm running:  HPSDR v2.2.3(W5WC - 11/30/11)
>
> Metis 1.6
> Mercury 3.1
> Penelope 1.6
> with Alex & Excalibur
>
> Comment One. The attenuator (ATT) displays the selections:  0dB, -20dB,
> -10dB, -20dB, -30dB, -40dB, -50dB
>
> Comment Two. On Alex Ctrl, selecting Band 20m, Transmit 3 (antenna)
> Actually selects Transmit "2" . All other selections are correct.
>
>
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