Actually, Don, that is not the case. Depending on your software, you can use the SDRplay as a panadapter using either IF or RF (RX Ant In/Out). I use my SDRplay both ways. The software has to be told which connection you are using in order to label frequencies correctly in the display, but they both work and produce similar displays.
Likewise, you can use the SDRplay as a second (or third) receiver using either feed method. Again, the SDR software has to know which connection you are using in order to know what frequency to demodulate the audio from, but there is software that will work either way. One caveat with using an SDR using a separate RX antenna: you may need some way to isolate the SDR from the antenna while you are transmitting, such as an external TX/RX switch, or some kind of receiver protection circuit; otherwise, the voltages induced on the receive antenna by your nearby transmitted signal may be high enough to damage the SDR. That is not an issue using either the RX Ant In/Out loop or the IF output from the K3; the RX Ant loop is behind the K3's TX/RX switch (the isolation is not perfect, but it is good enough to protect the SDR), and the IF Out level during transmit is also too low to be a problem. 73, Rich VE3KI W3FPR wrote: Your subject line indicates that you are using SDRPlay as a panadapter, and in that case, you would want to connect it to the K3 IF OUT and tune it to the K3 1st IF of 8.215 MHz. The display will show you what is in the K3 IF. If instead you are using it as a sub-receiver, you would connect it to the K3 RX IN and OUT, or use a separate RX antenna on SDRplay. ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
