Search found 5 matches

by wa5bdu
Wed Apr 25, 2018 7:59 pm
Forum: User Projects
Topic: Built the up-converter from January 2013 QST
Replies: 0
Views: 2870

Built the up-converter from January 2013 QST

I built the converter so I could copy the HF and MF bands from 1.8 MHz to 30 MHz. It's a fairly simple circuit with an NE612 or NE602 mixer chip and a 125 MHz clock oscillator chip. I felt the need to keep local AM BC and FM BC out of the mixer so I included a VHF filter on board for FM and used an ...
by wa5bdu
Wed Apr 25, 2018 7:51 pm
Forum: RTL-SDR Discussion
Topic: SDR# tuning step size
Replies: 3
Views: 1982

Re: SDR# tuning step size

Yes, the tuning knob helped a lot.

Changing the numbers displayed at the top for some odd reason only produced changes with every 50 to 100 Hz of change.

Nick - WA5BDU
by wa5bdu
Tue Apr 24, 2018 1:41 pm
Forum: RTL-SDR Discussion
Topic: SDR# tuning step size
Replies: 3
Views: 1982

SDR# tuning step size

Can the tuning steps in SDR# be made smaller?. (Or maybe it's a function of the hardware ...) The display indicates steps down to 1 Hz, but I note that the frequency doesn't actually change until the displayed frequency has been changed by 50 Hz or so. (If listening to a carrier or CW, you can tell ...
by wa5bdu
Tue Apr 24, 2018 1:32 pm
Forum: RTL-SDR Discussion
Topic: Need some documentation or info on SDR-# and plug-ins
Replies: 2
Views: 1774

Re: Need some documentation or info on SDR-# and plug-ins

Thanks - the "shift" thing was pretty helpful. I'll just have to feel my way along with some of the other functions.

Nick
by wa5bdu
Tue Apr 17, 2018 2:13 pm
Forum: RTL-SDR Discussion
Topic: Need some documentation or info on SDR-# and plug-ins
Replies: 2
Views: 1774

Need some documentation or info on SDR-# and plug-ins

I got a cheap dongle a couple months ago and just now finished doing a board and building a version of W9RAN's upconverter from QST. My main interest is MF & HF ham radio listening. I'm wondering if there's a place where I can find some documentation for the SDR# software and some of the plug-ins I'...