[R-390] PowerSDR

[Roy Morgan]

On May 15, 2009, at 9:34 PM, David Elsea wrote:

> Hello,
> A while back there were some post about using powerSDR with the  
> R-390A.  I am wondering what hardware was used to accomplish this.   
> I am at Dayton and don't know what to look for. Any help with is  
> greatly appreciated.    w6dke Dave

I find the following message in my file here: (not an archive search):

> 	From: 	dkelsea at sbcglobal.net
> 	Subject: 	[R-390] PowerSDR
>
> 	Date: 	May 15, 2009 9:34:12 PM EDT
>
> 	To: 	r-390 at mailman.qth.net
> 	Reply-To: 	dkelsea at sbcglobal.net
> Info from over at AMfone that might be of interest to R-390A  
> enthusiasts here...
>
> R-390A / SoftRock SDR i-f :
>
> http://www.w1vd.com/R-390ASoftRockdetails.html

The first part of that web page is:

> The R-390A / SoftRock setup has generated quite a bit of interest  
> and a number of questions on the setup since first appearing on the  
> AMfone website. This page is a collection of information that has  
> appeared in various threads on AMfone plus additional measurements  
> I've made on the R-390A alone and with the SoftRock SDR. The  
> information presented here should be applicable to other receivers  
> and other i-f frequencies with appropriate changes.
>
> The basic concept is to use the R-390A as a high performance 'front  
> end' for a software defined radio (SDR) i-f receiver. An R-390A  
> provides the rf amplifiers, tracking filters, mixers, HFO, VFO, wide  
> i-f filter and i-f amplifier stages and the SoftRock SDR setup takes  
> over from there providing the final i-f filter bandwidth, detectors,  
> AGC (if desired) and low level audio. The R-390A is tuned to  
> frequency as normal, however control of the final i-f filter  
> bandwidth, detector type, volume control, etc is done 'on screen'  
> under the control of software. The software of choice seems to be  
> FlexRadio PowerSDR, although other software can also be used.

Roy


Roy Morgan
k1lky at earthlink.net
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Groton NY, 13073
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