On 03/02/17 16:46, Greg D wrote:
Hi folks,
Has anyone used an RTL-SDR dongle on the 10.7 MHz IF output from another receiver? Is that better than going direct?
I would hope (but perhaps not assume) that your R-7000's front-end is better than the silicon tuner within the RTL dongle. The IF will already have AGC applied to it, so overload of the dongle won't be a concern once you get the level from the IF tap down to something that doesn't over-range the dongle's AGC input on typical signals. That can be done with a simple inline attenuator.
Here's some information about a hardware mod which allows "direct sampling mode" on the dongle:
http://www.rtl-sdr.com/rtl-sdr-direct-sampling-mode/
By doing this, you are essentially creating a Panadapter for the R-7000.
Let us know how it works!
--- Zach N0ZGO