>From the K3 Owner's Manual, "Theory of Operation" section for KREF3:
"In addition to the TCXO and dividers, the KREF3 provides the 2nd transmit I.F. mixer, which converts the DSP's 15-kHz transmit I.F. output to 8.215 MHz. This signal passes through a wide crystal filter to ensure good rejection of the carrier and other mixer products before being routed to the RF70 board." Bob NW8L On Sun, Nov 23, 2008 at 5:05 AM, Giuliano <[EMAIL PROTECTED]> wrote: > > I see on the K3 KREF3 schematic a quartz filter ( 8215 KHz BW= 4 KHz) . It > is switchable... > someone know what is the use ? In what modes it is switched on? Exist a > detailed bandwidth diagram? > > Thanks for help > Giuliano I0CG > Italy > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
