>I was wondering if anyone has considered a 17 meter option. The clocking rate of the KX1's AD9834 DDS chip is 50 MHz, the maximum rated for the chip. Typically, the highest usable output frequency from a DDS chip is no greater than about one-third the clock rate, or about 16.6 MHz.
Thus, the KX1 design won't support 18 MHz or higher ham bands because the DDS chip isn't capable of generating cleanly (for a DDS) the required transmit frequency or the high-side receiver local oscillator frequency that is required for one of the sideband reception modes. The K1, in contrast, doesn't use DDS frequency generation. Its four-band filter board can be built for 40 and 30 meters, plus ANY TWO of the following three bands: 20m, 17m, 15m. 73, Mike / KK5F _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
