Re: LF: G7NKS - Double Side Band: wspr?

[M0FMT <m0fmt@yahoo.co.uk>]

Tnx Alberto

 

I think the SR front end is quite wide infact so it would be really good to have so much BW. Anyway its not a problem to broarden the F/E filtering. Currently use same input for Rx on 3.5 through 10 megs and my guess is with degraded performance it would do 14megs as well.

 

Yep I have a choise of SC ASIO driver for the current arrangement. I have to say that when all else fails Winrad just ploughs on such a robust application.

 

I currently integrate all my Data applications with SDR on RX via a VAC a very neat arrangement no messy multiple PC connectivity!. Built an RXTX some time ago and now working on Data TX side of things.

 

Anyway thanks again info well receiver here.    73 petefmt 

--- On Tue, 17/11/09, Alberto di Bene <dibene@usa.net> wrote:

From: Alberto di Bene <dibene@usa.net>
Subject: Re: LF: G7NKS - Double Side Band: wspr?
To: rsgb_lf_group@blacksheep.org
Date: Tuesday, 17 November, 2009, 16:45

M0FMT wrote:

Veeeery interesting Alberto

 

Would that give me 192 Kc/s of tunable band width on my SDR radio given the right software?
There has been a lot of debate on the softrock reflector but this one seems to quite good. Do you have first hand experience of it? Christmas is coming ...hee hee.

 

73 petefmt

Pete,

  yes, I have one and I am quite satisfied with it. It can sample at 192 kHz, so it will give you from -96 to +96 kHz of band
around the center frequency tuned with the Softrock. Assuming of course that the low pass filters of the Softrock let such
a large portion of the spectrum pass unaffected... usually they cut at a value rather lower than that.... you will probably
have to change some capacitors.

The fact that it does not need an external power supply is handy too...

A suggestion : if you will use Winrad for it, set it to use the ASIO drivers to interface the card. You will then fully benefit
of the 24-bit amplitude resolution.

73  Alberto  i2PHD