As usual, Don's explanation is dead on. There's one more point to make about the noise blanker. Because it switches the receive path off and on to product those holes were the noise pulse would otherwise come through, it is a "mixer". That is, any signals in the signal path that are being switched on and off produce some and difference frequencies across the spectrum. To the listener the result may be an increase in the general background noise heard or strange artifacts such as key clicks on CW signals that are, in fact, generated within the receiver by the noise blanker and not coming from the transmitting station at all. Similar distortions may be apparent on SSB and other signals.
Normally these by-products of the noise blanker will be far less of a problem than the noise, but they demonstrate how important it is to turn the noise blanker OFF when it's not actually needed. 73, Ron AC7AC ______________________________________________________________ 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
