HI Leif and all, Many thanks for your most helpful response.
I had more or less figured out your explanation of userx_no, and now I understand that I *do* have a high-side LO in the RX10700. Well and good.
I should have remembered that FFT Version 5 is floating point. I will use it in future for FFT1, since my computer supports the SSE instructions. I will try setting up the amplitude margins for the downstream processing as you describe.
I've noticed one interesting thing while playing with MAP65 today. Even though I have assigned its "recvpkt" thread an "ABOVE_NORMAL" priority, I can cause it to drop UDP packets by having Windows do various things. (For example, starting up the Windows Task Manager.) The number of lost packets is normally small (say 1-5), and since there are some 33000 packets in a one-minute data block, the losses are probably negligible. I will watch it, and probably put in a warning flag or something.
If anyone is interested in testing an early version of MAP65, please let me know. I can probably make one available fairly soon. You will need two computers with a network connection between them. The MAP65 computer should have 1 GB or more of memory.
-- 73, Joe, K1JT ############################################################# This message is sent to you because you are subscribed to the mailing list <linrad@antennspecialisten.se>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>