[hpsdr] Answers to a few questions

[Phil Harman]

Hi John,

The 5th receiver is implemented in the latest version of Hermes (V2.5). It 
is used on Tx for pre-distortion but is still available on Rx.

It tests OK using cuSDR at 96ksps - any faster floods the 100T Ethernet 
connection.  I'll fix this when the Gigabit code is released.

73 Phil....VK6PH



-----Original Message----- 
From: John Marvin
Sent: Sunday, January 26, 2014 4:15 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Answers to a few questions

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

It appears the fifth receiver is no longer working with the new Hermes
firmware. Did we lose a receiver as part of enabling the PureSignal
feature, or am I doing something wrong?  I used CuSDR to test with 96
Khz sampling (since I believe that only 4 receivers were previously
supported when using 384 Khz sampling). If we did lose a receiver is
there any way of making this an option that can be turned on/off, or is
there not enough room in the fpga for both?

FYI, I run multi-channel WSPR reception with 5 receivers (sometimes 7
with an old slightly buggy prototype fpga version that Alex once
provided to me), so I like having as many receivers as possible!

Thanks,

John
AC0ZG

On 1/25/2014 8:43 AM, Warren C. Pratt wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> I'm just sorting through my recent email; however, there are a few themes 
> upon which I might be able to offer some useful comments.
>
> ** 3.2.7 installs into a separate directory from previous releases. Also, 
> 3.2.7 creates its database in a separate directory.  So, you'll start with 
> a fresh database and this release can readily coexist with previous 
> releases.
>
> ** As Helmut has pointed out, to learn more about PureSignal 
> predistortion, open PowerSDR 3.2.7, click 'Linearity' on the menu bar at 
> the top, then click 'Information' on the form that appears. Bill, KC9XG, 
> has also provided some additional excellent documentation.
>
> ** I see some reports of a front panel CW bug and other reports that it 
> works OK.  We'll need to check it out.
>
> 73,
> Warren  NR0V
>
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