[hpsdr] Stitched receivers on Mercury?

[Bruce Beford]

Thanks for the details, Phil. Great stuff.
Bruce
N1RX

-----Original Message-----
From: Phil Harman [mailto:phil at pharman.org] 
Sent: Monday, May 27, 2013 9:15 PM
To: Bruce Beford
Cc: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Stitched receivers on Mercury?

Hi Bruce,

In order to provide 384ksps we needed to replace the previous FIR filters
with Polyphase FIR filters. These will run at much higher sampling rates
but currently take up more FPGA room.

In which case we had to remove one of the receivers i.e. 3 receivers
instead of 4.

I think that I can reduce the amount of room that the Polyphase filters
take so we can have 4 receivers at 384k. It's on my 'to do' list following
the Gigabit Ethernet work.

73 Phil...VK6APH



> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi,
>
> I asked this yesterday, but it may have been lost in the thread on new
> firmware. Having updated Mercury and my other Atlas based boards with the
> latest firmware, I tried the latest PowerSDRmRX. The  wideband "stitched
> receivers" panadapter works fine on my Hermes and Angelia, but not on
> Mercury? On my Atlas-based system, I only see the native sampling rate
> width, not the 3x expected.
>
>
>
> Are stitched receivers not available on Mercury, or am I likely doing
> something wrong?
>
> Thanks,
>
> Bruce
>
> N1RX
>
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help:
> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/





 1369735694.0