I just went through the results of last Thursday morning's (UTC) ARRL Frequency Measurement test. I went through and noted who ran Flex radios. >From what I saw, the Flexers did pretty well, with most posting errors of less than 1Hz. Participants running Flex radios or copies of Flex radios (one had a home-brew SDR-1000) that I saw were:
K0HJ K0OD K3TUF K6HLH KC2LFI NJ0U NO5K W5GW W5PDB W5SXD W7JDE W8AC W9ZB --and-- WB6RQN That is 14 participants out of 114. That is better than 12% of the participants were running Flex kit. As for myself, my errors corresponded to what I expected knowing the errors in the DDS frequency. If we can figure out the error in the DDS and the error in the software NCO for the IF, we should be able to improve accuracy. Of course, if you measure and plot the frequency vs. time, you see that the ionosphere was making measurement very difficult. I saw peak-to-peak frequency variations of almost 1Hz in some cases. Anyway, lots of fun. Congratulations to everyone who participated. (BTW, I used the plots of my data points as part of a math lesson this morning where the students are studying mean, median, and mode. Who says Amateur Radio isn't relevant!) -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 [email protected] +1.767.617.1365 (Dominica) +1.931.492.6776 (USA) (+1.931.4.WB6RQN) _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
