There are a couple of things to think about. How much power are you running? How close is the receive antenna to your transmitting antenna? Does your receive only antenna possibly have an interface that can connect to the key out of the K3? (My Pixel Loop antenna has such a device)
You can also try it out and listen for a clicking noise from the carrier operated relay inside the K3. It is a protective relay that will energize if it sees too much power coming in on the RX antenna input. If you hear it clicking then it is a good idea to consider additional protection. There are external protective devices available that you can purchase. DX Engineering and Array Solutions have them I think there are others out there. http://www.dxengineering.com/search/department/antennas/section/receive-antennas-and-arrays/product-line/dx-engineering-receiver-guard-5000-electronic-rf-limiters?autoview=SKU&N=4294953330%2B4294951218&sortby=Default&sortorder=Ascending http://www.arraysolutions.com/Products/as_rxfep.htm 73, Mike K2MK Elecraft mailing list wrote > I ordered the sub receiver and in the conversation with Elecraft I was > informed that it is good idea to build a device that would short the > dedicated RX antenna to ground to protect it during transmit. > The simple way would be a relay but I'd rather not hear a relay click with > each transmission. > I was wondering what others are using to accomplish this. > > Thank you -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Sub-Receiver-and-protecting-the-Sub-RX-input-tp7597571p7597578.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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 Message delivered to [email protected]
