I have completed the K3S kit assembly but had questions about the receive sensitivity. On the advice of Gary, AB7MY at Elecraft Support (Thank you) I have went through the filter configuration again via the K3 Utility and improved things to the point that I now hear AM broadcast stations but few hams down in the mud (band condx? and poor single #14 insulated long wire antenna 6' in air-my son is to help me get OCFDP up when we can (have 6 element tri-band yagi that needs rebuilt on saw horses :-)). The only signal generator I have is an antenna analyzer with a -10dbm output. After some research to use the analyzer to supply a low level signal to the K3S I have come up with these values for a Pi attenuator circuit and would like to have someone check my results and give advice: -10dbm analyzer fixed output or 71 millivolt rms attenuated to 50 microvolts rms would be, I believe, a 63db attenuation. For a Pi attenuator the resistor values would be two R1=50 ohm resistors (signal to gnd), for the one R2=35.3 kohm resistor (in series with the signal between the two R2 resistors). Probably just use two 47 ohm and one 33 kohm. I don't intend to do ANY calibrations with this device, just a way to see how the K3S is functioning and that my thinking is in the ball park.
Thank you and 73, Tom NB5Q ______________________________________________________________ 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]
