"IMHO, the problem with most blankers, as mentioned below, is that the designers don't introduce any delay in the signal path. It takes some time to amplify, detect and form the blanking pulses that drive the noise gate. Absent delay, the noise pulses get through the gate and do their mischief before the blanking takes place."
That's right: the blanking pulse needs to open the gate before the signal+noise pulse gets there. You can either delay the signal, or you make the blanking pulse so quick that it naturally arrives there before the signal. A wideband noise receiver can have less delay than the receiver, and blanking pulses can be generated in nanoseconds with todays fast circuits, so it can sometimes be done without a delay in the signal path. W7AAZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
