Re: Bitx 40 board.

Ken All Messages By This Member #19000 I got it. I kept thinking the IF(12 MHZ) was the BFO. So it turns out my BFO is also 11.9986 MHZ. So if I have mine start at say 7.164 MHZ, it's o/p is 11.9986 - 7.164 = 4.8346 MHZ OK back to the DDS LPF and 20M BPF. 73 Ken toggle quoted message Show quoted text On Wed, Dec 7, 2016 at 4:33 PM, Joel Caulkins caulktel@... [BITX20] <BITX20@...> wrote: ? Ken, I set my Arduino sketch to always start on 7.268.500 so when I turn on the Radio/DDS it always displays that, of course it's only displaying that, but it's really outputting 4.730.100 to the VFO. So, 11.998.600-4.700.100 = 7.268.500. Clear as mud? I know it gets confusing at times. Joel Caulkins KB6QVI Joel Caulkins KB6QVI On Dec 7, 2016, at 12:58 PM, Ken Chase chase8043@... [BITX20] <BITX20@...> wrote: ? What is displayed on your DDS? 7.000000 MHZ or 7.001400 MHZ. 73 Ken On Tue, Dec 6, 2016 at 7:46 PM, Joel Caulkins caulktel@... [BITX20] <BITX20@...> wrote: ? I set mine to 11998.600 because that was my BFO frequency. Farhan says it should be 11998.800 YMMV. Joel Caulkins KB6QVI On Dec 6, 2016, at 4:36 PM, olsonaj6927@... [BITX20] <BITX20@...> wrote: ? so I am at a stop point and need some help from the community. Have a bitx40v3, purchased a qrp-labs vfo. All tested and seem to be working. Could someone help by leeting me know what the IF freq should be set to.? thanks art n2ajo

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