Elecraft explains it pretty clearly at http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm
The original post was from someone who was going to do the board swap, but decided to go with the user installed LPF option instead. I pointed out (or intended to) that the K3DSPUPGD (the board swap) included the improved low frequency response modifications, whereas the K3DSPLPF (the user installed LPF board) did not. I guess what I should have said was that installing the K3DSPLPF option did not change the low frequency response. My (intended) point was that if they didn't already have the improved low frequency response and wanted it, they should stick with the board swap. If they didn't care about the improved low frequency response or already had it, then installing the LPF board themselves was a reasonable alternative to waiting for the board swap. I did not intend to imply (and I have no knowledge of) any further low frequency response circuit changes since rev C. I do not work for Elecraft. I have no inside information. All I know about their products comes from information that's publicly available on their web site. 73 -- Joe KB8AP On Mar 8, 2010, at 11:56 AM, Grant Youngman wrote: > Let me be specific in my question. If I add the LPF daughter board > to the "C" level DSP board, are there ADDITIONAL changes that were > made to get to the factory "D" level board or not, beyond what is > already in the "C" board? Maybe Elecraft would chime in on this > just for clarification. > > Thanks ... Grant/NQ5T ______________________________________________________________ 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
