Dick, The RX ANT IN jack is electrically isolated from the rest of the circuitry during transmit via a pair of PIN diodes. If the signal level is high, an associated COR (carrier-operated relay) is also kicked in. So what you're experiencing is not normal.
However, we do advise keeping RX-only antennas as far from high-power transmit antennas as possible so that the COR will not activate during transmit. This minimizes risk of damage to the PIN diodes. If you continue to have such an issue, please contact k3support for other suggestions and possible troubleshooting information. 73, Wayne N6KR On Jan 24, 2011, at 10:18 PM, [email protected] wrote: > Hi Guys, > > Please correct me if I'm wrong, but I believe the K-3 Receive > Antenna is > unswitched during tranmit... which allows high RF to get back into the > receiver. That's sure the case when using my beverage for receive > and transmitting > on 160-meters. (sounds like my K-3 is going to blow up) I'm > wondering why > this is the case. Couldn't an inexpensive relay be added to the > KXV3 to > prevent his problem? > > I'd appreciate knowing what others are doing to prevent your K-3's > from > blowing up while using beverages on 160-meters! Is everyone > building an > external relay box just to switch the beverage off during transmit? > > Thanks & 73, > > Dick- K9OM > > > > > > > ______________________________________________________________ > 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 ______________________________________________________________ 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 ______________________________________________________________ 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
