Peter, I have heard from some afflicted with this, that the situation can be helped in a few ways.
#1- reduce the overall system gain. Turn off unneeded preamps, turn on attenuator. #2. Often, the interfering signal has been identified as a SW BC station _below_ the Amateur band in use. In these cases, a high pass filter may help. The output LPF of the rig will not reduce the incoming, lower frequency, interference. This would imply a switchable (or otherwise tunable) HPF, provided by the user, and switched in as needed. Less than ideal, but may be helpful in some situations. #3. engage the 8KHz Rx shift. Note that this does not affect all operators, in all situations. When it does, however, it can be quite debilitating to RX. The 8 KHz shift does seems to help in most cases, but should be used only when needed, as Wayne has previously said. 73, Bruce N1RX > This thread has moved way beyond my technical level. As I understand, the > problem arises in locations where there are very strong broadcast > stations, well outside the ham bands. Presumably a bandpass filter > doesn't help -- is it that the mixing products are occurring in the > antenna? Wouldn't the solution then be in the antenna, in the form of > directional nulls or stub filters? > Peter W0LLN ______________________________________________________________ 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
