Re: Recommendation for high sample rate receiver?

2020-02-03 Thread CEL
Hi Mike, thanks for following up on this: A signal with 0.1 microsecond rise time definitely has definitely more than 6 MHz bandwidth :) so that's where my confusion stems from. It will have something upwards of 20 MHz, rule of thumb should be around 100 MHz bandwidths, and that fits nicely with t

RE: [EXT] Re: Recommendation for high sample rate receiver?

2020-02-03 Thread Chesir, Aaron M.
Your statement " A signal with 0.1 microsecond rise time definitely has definitely more than 6 MHz bandwidth" is not necessarily true. Simple proof: The first 3 components of a 1 Mcycle/sec square wave are: sin(2*pi*1e6*t) + (1/3) sin(2*pi*3*1e6*t) + (1/5) sin(2*pi*5*1e6*t). If you add just th

Re: Recommendation for high sample rate receiver?

2020-02-03 Thread Fons Adriaensen
On Sat, Feb 01, 2020 at 02:58:06AM -0500, Mike wrote: > The target signal of interest uses pulse modulation where each pulse is > 1 microsecond in duration, with a rise time of less than 0.1 microsecond > and a decay time of less than 0.2 microseconds.  The goal is to identify > the start (arriva

gr-iqbal->gr-osmosdr->gqrx missing pkgconfig files break gr-3.8 builds

2020-02-03 Thread Barry Jackson
Hello, Without a .pc in gr-iqbal, gr-osmosdr (3.8 branch) will not build as it can't find gr-iqbal. Likewise without a .pc in gr-osmosdr, gqrx will not build as it can't find gr-osmosdr. After creating .pc files for both the above all packages build and gqrx runs fine. I do not understan

Re: gr-iqbal->gr-osmosdr->gqrx missing pkgconfig files break gr-3.8 builds

2020-02-03 Thread Sylvain Munaut
> Without a .pc in gr-iqbal, gr-osmosdr (3.8 branch) will not build as it > can't find gr-iqbal. I just had a look at gr-osmosdr-0.1.4.127-3.mga7.src.rpm and this is not using the official code from the gr3.8 branch of git.osmocom.org/gr-osmosdr The code in that repo at absolutely no point will ev