About one second every five seconds.
These are nominal frequencies. The exact frequencies are slightly less, such as 8289.78
I think around 1751 they switched, and some of the frequencies below are after the switch, as I went back and could not find some of the earlier frequencies.
In fact now the pattern is different - on one second every three seconds. No, it is not even always regular. Sometimes every two seconds, sometimes three. Strange.
I could not receive this network locally, had to use remotes to see it, and I came on late, so missed most of it. I did have a look at it, but not as closely as I like to look at these kinds of networks. I suspect this is an east coast source.
I tuned into this network at about 1812z. At that time I could find 4 active frequencies, 8647, 8669, 8800, and 9065 kHz. Sometime later I also saw 8540 and 9198 kHz, but have no idea if they were up the entire time or came up later.
The 4 grouped freqs, 8647, 8669, 8800, and 9065 kHz, were in sync with each other. No two frequencies were ever on the air at the same time, but rather the pulses cycled through each frequency in turn. At one point I noted the cycle as being 8647, 9065, 8669, then 8800, but I have no idea if that was used the whole time.
8540 and 9198 were NOT in the same cycle as the 4 grouped freqs, but I think they were in cycle with each other and they used the same pulse length and timing as the other freqs.
All transmissions used the same basic pulse length and time between pulses. 0.7 second long pulses and 5.6 seconds between pulses. Chris, if you look at the ones that looked irregular to you (I saw the same thing) and if you only look at every other pulse on any given frequency you will find the 0.7 x 5.6 pattern, I believe those frequencies were being double pulsed.
Most of the frequencies I saw left the air about 1828z, and I did not find them on other freqs after a bit of a search. 8540 kHz, however, stayed on, as near as I can tell alone, until sometime after 1850. I checked at 1850 and it was still up, I checked again at 1910 and it was not.
I logged locally what is probably this same network on Dec 19, 2012. It used the 0.7 x 5.6 second pattern and the frequencies used then were 8669, 8799, 9198, 9479, 10200, and 10364 kHz. Note the use of some of the same frequencies. Time was 1335 to 1344 UTC. At that time of the year it would have still been a mostly dark path from east coast to me on the west coast.
T!
Topic: Dashers 1744 UTC 6 Sep 2013 (Read 1348 times)
