That is an interesting frequency distribution pattern, and a frequency set that the ditters have not used, at least as far as I have seen, since April 18, 2012. At that time they were using a 0.0625 msec long pulse every 3.0 seconds. You did not happen to note the pulse duration or repetition period, did you Chris?
April 18, 2012, was the first transmissions of the ditter network (Pips, in my log) that I have recorded, and the only time they used this specific channelization that I have recorded.
In your report, note that 5970 to 6720 kHz all fall on 90 kHz spacing.
6720 to 7020 kHz is all 100 kHz spacing.
7020 to 7570 kHz is all 110 kHz spacing. Note the gap in your reported freqs of 7240 and 7460 kHz in this range, that is 240 kHz apart, want to bet there was one at 7350 kHz? Also note the gap between the end here (7570 kHz) and the next reported freq, 7920 kHz. Exactly room for two more freqs on 110 kHz spacing, 7680 and 7800 kHz, both were used during the 2012 transmission.
7920 to 8400 kHz is all 120 kHz spacing.
8500 to 8530 kHz is 30 kHz spacing, but if 8500 was not there then 8400 to 8530 would have been 130 kHz spacing.
8530 to 8670 and 9050 to 9190 is 140 kHz spacing. Interestingly in 2012 they did not use 8670 kHz, but rather they used 8660 kHz, continuing the 130 kHz spacing one more set.
April 18, 2012, they used all the freqs listed above except 8500 kHz. They also used several more freqs, both above and below this reported range.
In 2012 they also came back on the air later in the evening, and was active until about 0339 UTC. I guess when I get home from work I will have to keep an eye open for them.
T!
Topic: Dasher Network 2012 UTC 1 Jul 2014 (Read 2406 times)
