-------- In message <cad2jfajsgrpoj5tjtb7uneoapng5zjuklcjm2kkgfp-pd8a...@mail.gmail.com>, paul swed writes:
>John absolutely 1 frequency 100 KHz. The repetition rate is 89700 us. Its >pulse and you need about +-15KHz BW. If listening its just a ticking sound. Instead of your SDR it might be smarter to use either a digital oscilloscope or spectrum analyzer. You will need a frequency of *exactly* 1/0.089700 us = 11.14827201... Hz. (HP5359A's are *great* for this, but most DDS sig-gens will work too. You use this to signal to trigger your scope/spectrum analyzer, feed the antenna signal to the input and select averaging mode. If you have a really good antenna signal and a scope/spec-an with high X-resolution, you can halve the sync frequency and, so that the pulse polarity does not cancel out about half the loran pulses. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
