Re: [softrock40] SR-2 noise floor results
Sure, here is some work I did 2-1/2 years ago with the SR Lite from the "Files" section......
73 Kees K5BCQ
---------- Original Message ----------
From: Jeff Blaine <keepwalking188@...>
Subject: [softrock40] SR-2 noise floor results
Date: Fri, 05 Jun 2009 20:27:28 -0500
I have a 30M SR-2 for IF - it's using a 14.060 crystal and the intended
IF service range is around 10.55 Mhz.
The SR2 is the standard version with the only optimizations being the
manual adjustment of the L/C network using an LC meter - the network is
within about 5% of what I estimate the ideal values at 10.5mhz should be.
And in front of the SR2 is a Clifton Labratories z10000 buffer/amp with
a gain of 14db.
Other equipment in the chain: Infrasonic Quartet sound card @ 96khz
sample. PowerSDR v1.19.
Feeding a -73dbm signal from an XG2 at 10.545 mhz, the post-calibration
floor is about -129dbm.
Without the z10000 amp, the noise floor is around -105dbm to -110dbm.
Wondered if any of the group had done some noise floor testing so we
could compare notes???
Yahoo! Groups Links
<*> To visit your group on the web, go to:
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to: