Hi, First: happy new year to all!
At PA6Z contest group, we're thinking about using 2 K3's in the upcoming CQWW 160 meter contest. This will be the first time we will be using two rigs on the same band. Of course, we're planning large antenna separation and we'll perform tests and take power measurements in advance, but still we're a bit anxious about possible harmful power levels at the antenna inputs. If I have read the documentation correctly, the K3 has carrier-operated relays on every *receive-only* antenna input, but not at the transmit antenna ports. So, what about this scenario: The first K3 is in receive mode. Its operator has just accidentally hit the 'RX ANT' button, switching the main receiver's antenna from the beverages on the RX ANT (which has C.O.R. protection) to the vertical on ANT 1 (which has no C.O.R. protection). Now, when the second K3 starts transmitting, which protection does the first K3 have, in case the antenna separation alone is not enough to prevent reduce RF levels on the ANT 1 input to a harmless level. Should I add outboard protection to the ANT 1 port, switching it to GND whenever the radio is not keyed? Thanks for your input, 73, Frank PA4N ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
