James, I would highly advise the buffer amplifier. The lack of a buffer amp will not hurt the Softrock, but the Softrock oscillator signal will be injected back into the K3, and can degrade the K3 receiver performance. If you omit it, please do not complain about strange howls and birdies nor decreased dynamic range performance on your K3.
The IF output port on the K3 is "wide open", and will respond to 8.191 kHz as well as 8.215 (only 24 kHz away), so if the signal is large enough, even the Hardware AGC can be activated and de-sense the entire K3 receiver. See Jack Smith's writeup about the K3 with the Softrock. 73, Don W3FPR. James Sarte wrote: > Don et al, > > Thank you all for your responses. > > I got an email reply from Tony KB9YIG tonight. He states: "I have at times > provided a Lite II kit with a center frequency of 8.191 MHz. The Lite II > center frequency noise is thus away from the K3 IF center frequency. > Several have reported that it works well for them." > > Since the center frequency is 8.191, I'm assuming I won't need the Z10000 > buffer amp? > > Anyway, I should be able to order one from him sometime mid-January. He > goes on to say that he's quite busy filling other Softrock orders. > > Tnx es vy 73, > James K2QI > > ______________________________________________________________ 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
