From bb95a214af87dcbf21190be57a146c7007ea4f2e Mon Sep 17 00:00:00 2001 From: Michael Ossmann Date: Thu, 1 May 2014 08:09:58 -0700 Subject: [PATCH] availability --- FAQ.md | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/FAQ.md b/FAQ.md index 27650fb..68c33e1 100644 --- a/FAQ.md +++ b/FAQ.md @@ -64,4 +64,9 @@ There are a few options: 2. Avoid it. The best way to handle DC offset for most applications is to use offset tuning; instead of tuning to your exact frequency of interest, tune to a nearby frequency so that the entire signal you are interested in is shifted away from 0 Hz but still within the received bandwidth. If your algorithm works best with your signal centered at 0 Hz (many do), you can shift the frequency in the digital domain, moving your signal of interest to 0 Hz and your DC offset away from 0 Hz. HackRF's high maximum sampling rate can be a big help as it allows you to use offset tuning even for relatively wideband signals. -3. Correct it. There are various ways of removing the DC offset in software. However, these techniques may degrade parts of the signal that are close to 0 Hz. It may look better, but that doesn't necessarily mean that it is better from the standpoint of a demodulator algorithm, for example. Still, correcting the DC offset is often a good choice. \ No newline at end of file +3. Correct it. There are various ways of removing the DC offset in software. However, these techniques may degrade parts of the signal that are close to 0 Hz. It may look better, but that doesn't necessarily mean that it is better from the standpoint of a demodulator algorithm, for example. Still, correcting the DC offset is often a good choice. + +## Where can I buy HackRF? + +### Q: +HackRF is designed and manufactured by Great Scott Gadgets. Please see [http://greatscottgadgets.com/hackrf/](http://greatscottgadgets.com/hackrf/) for availability.