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Author Topic: V24 and M94 observations, Sep and Oct 2010  (Read 995 times)

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V24 and M94 observations, Sep and Oct 2010
« on: October 31, 2010, 1621 UTC »
Howdy all,

It has been a while since I have done an M94 or V24 update, over 2 months in fact.  Life just gets in the way of radio some times ;)

Several months back I reported that as of sometime around the first of the year both stations changed habits and some frequencies.  I have a better grasp of that now.  I also have a new and, at this time, accurate schedule.

Habits:
The first of the year date was a rough estimate.  In fact the habits changed over a period of about 4 to 6 months from about September 2009 to about March 2010.  For the most part shifts and changes after March 2010 appear to be along the levels seen prior to September 2009, occasional and scattered in nature.

V24 and M94 have indeed dropped all activity on known formerly used frequencies below 5715 kHz.  For V24 the only known active frequencies are 5715, 6215, 6330, and 6730 kHz.  For M94 and of the known frequencies only 5715 and 6330 kHz are used.  These frequency changes are fairly significant in that several of the lower frequencies were known to be in use for many years, possibly decades, this would appear to have been a most uncharacteristic change.

As I reported last time M94 has greatly reduced activities, it is down to 12 transmissions a month.  4 each to 3 different ID’s, 1017, 1014, and 935.  All in either the 1300 or 1400 UTC time slots.  935 has replaced 815 and the occasional 958.  This seems stable now with no changes in the last several months, however I would not be surprised to see more ID number change in the 1400 UTC 6330 kHz M94 transmission slots, the 5715 kHz, 1300 UTC slots appear extremely stable, with no changes in better than a year.

The 1620 UTC V24 time slots have mostly shifted to 1630 UTC, particularly for 6730 kHz transmissions.  However, 1620 UTC is still used occasionally, but most often after what seems to be a botched or irregular 1600 UTC transmission.  Pure conjecture here, but 1620 may primarily be being used as a “catch up” time slot or to deconflict slots that normally are sent at 1600 UTC.  1600 UTC seems to have the most time slot anomalies in the schedule.  I am still working on it and it could be an anomaly of data, but it almost appears that a couple of time slots are used every other month, instead of every month.  There does appear to still be at least one, 2 day, scheduled 1620 time time/day/freq slot used regularly.

One 1610 time slot was noted this past month, but that was after a definite problem with a 1600 transmission, so I suspect that was just an error.  On average I see about 5 or 6 error or unexpected transmissions per month, not bad when you consider there are about 125 transmissions per month total.

Web Page:
I have updated both my V24 and M94 web pages to at least touch on the new changes and schedule.  Eventually I will re-write both to reflect the current activities.
My V24 page:  http://token_radio.home.mchsi.com/numbers_station_v24.htm
My M94 page:  http://token_radio.home.mchsi.com/numbers_station_m94.htm

Schedule:
I have put together a new schedule for M94 and V24.  Averaging it out to exclude error transmissions it appears more than 90% accurate each month.  Using it I am generally able to set up and schedule my recordings weeks in advance.

V24 and M94 Schedule:  http://token_radio.home.mchsi.com/Sched_V2_Oct2010.JPG

History of all V24 and M94 receptions since January 1, 2010:
http://token_radio.home.mchsi.com/Sched_all_2010_Oct.JPG


The end of the month can be odd or confusing on the schedule.  Since transmissions pretty much all fall in two-day pairs, there are transmissions scheduled after the 28th of the month, and the number of days in each month varies from 28 to 31, this can mean the end of the month might cut into a pair.  In the 1500 time slot you will see that a 5715 kHz transmission appears to be listed for 28, 30, and 31 of the month.  You will also see that there is a 1st of the month 1500 UTC, 5715 kHz, transmission listed.  What this really means is that the last day of the month, regardless of date, will have a 1500 UTC, 5715 kHz, V24 transmission, and it’s second day pair will be on the first day of the next month.  The same thing happens in the 1530 time slot, but on 6215 kHz.  However during the 1530 slot there can be conflicts with other frequencies (if the month has 28 or 29 days) and so on those months there may only be a one day transmission, on the first of the month, breaking the “every transmission is part of a two-day pair” rule.

T!
Mohave Desert, California, USA

My receptions since September 1, 2010

 
V24:

Date      Day   Time   Freq   Mode   ID

9/1/2010   Wed   1500   5715   AM   V24
9/1/2010   Wed   1530   6215   AM   V24
9/3/2010   Fri   1300   5715   AM   V24
9/3/2010   Fri   1330   6330   AM   V24
9/3/2010   Fri   1400   6215   AM   V24    Windows shutdown sound after finish
9/4/2010   Sat   1300   5715   AM   V24
9/4/2010   Sat   1330   6330   AM   V24
9/4/2010   Sat   1400   6215   AM   V24
9/4/2010   Sat   1500   6215   AM   V24
9/5/2010   Sun   1400   6330   AM   V24
9/5/2010   Sun   1430   6730   AM   V24
9/5/2010   Sun   1500   6215   AM   V24
9/5/2010   Sun   1530   6730   AM   V24
9/5/2010   Sun   1630   6730   AM   V24
9/6/2010   Mon   1300   6730   AM   V24
9/6/2010   Mon   1400   6330   AM   V24
9/6/2010   Mon   1430   6730   AM   V24
9/6/2010   Mon   1530   6730   AM   V24
9/6/2010   Mon   1630   6730   AM   V24
9/7/2010   Tue   1300   6730   AM   V24
9/7/2010   Tue   1430   6330   AM   V24
9/8/2010   Wed   1430   6330   AM   V24
9/8/2010   Wed   1600   6730   AM   V24
9/9/2010   Thu   1600   6730   AM   V24
9/10/2010   Fri   1330   6730   AM   V24
9/10/2010   Fri   1530   6330   AM   V24
9/10/2010   Fri   1600   6215   AM   V24
9/10/2010   Fri   1620   6330   AM   V24
9/11/2010   Sat   1530   5715   AM   V24
9/11/2010   Sat   1600   6330   AM   V24
9/12/2010   Sun   1200   5715   AM   V24    Windows shut down sound after finish
9/12/2010   Sun   1330   6215   AM   V24
9/12/2010   Sun   1530   5715   AM   V24
9/12/2010   Sun   1600   6330   AM   V24
9/13/2010   Mon   1530   6730   AM   V24
9/13/2010   Mon   1600   6330   AM   V24
9/14/2010   Tue   1530   6730   AM   V24
9/15/2010   Wed   1430   6730   AM   V24
9/15/2010   Wed   1530   6215   AM   V24
9/15/2010   Wed   1600   5715   AM   V24
9/16/2010   Thu   1430   6730   AM   V24
9/16/2010   Thu   1500   6215   AM   V24
9/16/2010   Thu   1530   6215   AM   V24
9/16/2010   Thu   1600   5715   AM   V24
9/17/2010   Fri   1500   6215   AM   V24
9/18/2010   Sat   1300   5715   AM   V24
9/18/2010   Sat   1330   6330   AM   V24
9/18/2010   Sat   1400   6215   AM   V24
9/19/2010   Sun   1300   5715   AM   V24
9/19/2010   Sun   1330   6330   AM   V24
9/19/2010   Sun   1400   6215   AM   V24
9/19/2010   Sun   1630   6730   AM   V24
9/20/2010   Mon   1400   6330   AM   V24
9/20/2010   Mon   1630   6730   AM   V24
9/21/2010   Tue   1400   6330   AM   V24
9/21/2010   Tue   1500   5715   AM   V24
9/21/2010   Tue   1530   6730   AM   V24
9/22/2010   Wed   1430   6330   AM   V24
9/22/2010   Wed   1530   6730   AM   V24
9/23/2010   Thu   1330   6730   AM   V24
9/23/2010   Thu   1430   6330   AM   V24
9/23/2010   Thu   1600   6330   AM   V24
9/24/2010   Fri   1200   5715   AM   V24
9/24/2010   Fri   1330   6730   AM   V24
9/24/2010   Fri   1530   6330   AM   V24
9/24/2010   Fri   1600   6730   AM   V24
9/25/2010   Sat   1200   5715   AM   V24
9/25/2010   Sat   1530   6330   AM   V24
9/26/2010   Sun   1530   6730   AM   V24
9/26/2010   Sun   1600   6215   AM   V24
9/26/2010   Sun   1610   6330   AM   V24    format, odd start time
9/27/2010   Mon   1330   6215   AM   V24
9/28/2010   Tue   1200   6330   AM   V24
9/28/2010   Tue   1300   6730   AM   V24
9/28/2010   Tue   1330   6215   AM   V24
9/28/2010   Tue   1530   5715   AM   V24
9/28/2010   Tue   1600   5715   AM   V24
9/29/2010   Wed   1200   6330   AM   V24
9/29/2010   Wed   1230   6215   AM   V24
9/29/2010   Wed   1530   5715   AM   V24
9/29/2010   Wed   1600   5715   AM   V24
9/30/2010   Thu   1500   5715   AM   V24
10/1/2010   Fri   1500   5715   AM   V24
10/2/2010   Sat   1500   6215   AM   V24
10/3/2010   Sun   1300   5715   AM   V24
10/3/2010   Sun   1330   6330   AM   V24
10/3/2010   Sun   1400   6215   AM   V24
10/3/2010   Sun   1500   6215   AM   V24
10/4/2010   Mon   1300   5715   AM   V24
10/4/2010   Mon   1330   6330   AM   V24
10/4/2010   Mon   1400   6215   AM   V24
10/4/2010   Mon   1500   6215   AM   V24
10/5/2010   Tue   1400   6330   AM   V24
10/5/2010   Tue   1430   6730   AM   V24
10/5/2010   Tue   1500   6215   AM   V24
10/6/2010   Wed   1400   6330   AM   V24
10/6/2010   Wed   1430   6730   AM   V24
10/8/2010   Fri   1430   6330   AM   V24
10/8/2010   Fri   1600   6730   AM   V24
10/9/2010   Sat   1330   6730   AM   V24
10/9/2010   Sat   1530   6330   AM   V24
10/9/2010   Sat   1600   6730   AM   V24
10/10/2010   Sun   1330   6730   AM   V24
10/10/2010   Sun   1500   6215   AM   V24
10/10/2010   Sun   1530   6330   AM   V24
10/10/2010   Sun   1600   6215   AM   V24
10/10/2010   Sun   1630   6330   AM   V24
10/11/2010   Mon   1330   6215   AM   V24
10/11/2010   Mon   1500   6215   AM   V24
10/11/2010   Mon   1530   5715   AM   V24
10/11/2010   Mon   1600   6215   AM   V24
10/11/2010   Mon   1620   6330   AM   V24
10/12/2010   Tue   1200   5715   AM   V24
10/12/2010   Tue   1330   6215   AM   V24
10/12/2010   Tue   1530   5715   AM   V24
10/12/2010   Tue   1600   6330   AM   V24
10/13/2010   Wed   1200   5715   AM   V24
10/13/2010   Wed   1600   6330   AM   V24
10/14/2010   Thu   1300   6730   AM   V24
10/15/2010   Fri   1300   6730   AM   V24
10/15/2010   Fri   1430   6730   AM   V24
10/15/2010   Fri   1600   5715   AM   V24
10/16/2010   Sat   1430   6730   AM   V24
10/16/2010   Sat   1500   6215   AM   V24
10/16/2010   Sat   1600   5715   AM   V24
10/17/2010   Sun   1500   6215   AM   V24
10/18/2010   Mon   1300   5715   AM   V24
10/18/2010   Mon   1330   6330   AM   V24
10/18/2010   Mon   1400   6215   AM   V24
10/18/2010   Mon   1500   6215   AM   V24
10/19/2010   Tue   1300   5715   AM   V24
10/19/2010   Tue   1330   6330   AM   V24
10/19/2010   Tue   1400   6215   AM   V24
10/19/2010   Tue   1500   6215   AM   V24
10/19/2010   Tue   1630   6730   AM   V24
10/20/2010   Wed   1400   6330   AM   V24
10/20/2010   Wed   1500   5715   AM   V24
10/20/2010   Wed   1630   6730   AM   V24
10/21/2010   Thu   1400   6330   AM   V24
10/22/2010   Fri   1300   6730   AM   V24
10/22/2010   Fri   1430   6330   AM   V24
10/22/2010   Fri   1600   6330   AM   V24
10/23/2010   Sat   1300   6730   AM   V24
10/23/2010   Sat   1330   6730   AM   V24
10/23/2010   Sat   1430   6330   AM   V24
10/23/2010   Sat   1600   6330   AM   V24
10/24/2010   Sun   1200   5715   AM   V24
10/24/2010   Sun   1330   6730   AM   V24
10/24/2010   Sun   1530   6330   AM   V24
10/24/2010   Sun   1600   6730   AM   V24
10/25/2010   Mon   1200   5715   AM   V24
10/25/2010   Mon   1530   6330   AM   V24
10/25/2010   Mon   1600   6730   AM   V24
10/26/2010   Tue   1500   6215   AM   V24
10/26/2010   Tue   1600   6215   AM   V24
10/27/2010   Wed   1300   6730   AM   V24
10/27/2010   Wed   1330   6215   AM   V24
10/27/2010   Wed   1500   6215   AM   V24
10/28/2010   Thu   1300   6730   AM   V24
10/28/2010   Thu   1330   6215   AM   V24
10/28/2010   Thu   1530   5715   AM   V24
10/28/2010   Thu   1600   5715   AM   V24
10/29/2010   Fri   1200   6330   AM   V24
10/29/2010   Fri   1530   5715   AM   V24
10/29/2010   Fri   1600   5717   AM   V24
10/31/2010   Sun   1530   6215   AM   V24


M94

Date      Day   Time   Freq   Mode   ID
9/1/2010   Wed   1300   5715   MCW   M94   1017
9/2/2010   Thu   1300   5715   MCW   M94   1017
9/10/2010   Fri   1400   6330   MCW   M94   935
9/11/2010   Sat   1400   6330   MCW   M94   935
9/12/2010   Sun   1400   5715   MCW   M94   1014
9/13/2010   Mon   1400   5715   MCW   M94   1014
9/22/2010   Wed   1400   5715   MCW   M94   1014
9/23/2010   Thu   1400   5715   MCW   M94   1014
9/24/2010   Fri   1300   5715   MCW   M94   1017
9/25/2010   Sat   1300   5715   MCW   M94   1017
9/26/2010   Sun   1400   6330   MCW   M94   935
9/27/2010   Mon   1400   6330   MCW   M94   935, broken audio with drop outs
10/2/2010   Sat   1300   5715   MCW   M94   1017
10/10/2010   Sun   1400   6330   MCW   M94   935, broken audio
10/11/2010   Mon   1400   6330   MCW   M94   not copied, probably 935, broken audio
10/12/2010   Tue   1400   5715   MCW   M94   1014
10/13/2010   Wed   1400   5715   MCW   M94   1014
10/22/2010   Fri   1400   5715   MCW   M94   1014
10/23/2010   Sat   1400   5715   MCW   M94   1014
10/24/2010   Sun   1300   5715   MCW   M94   1017
10/25/2010   Mon   1300   5715   MCW   M94   1017
10/26/2010   Tue   1400   6330   MCW   M94   935
10/27/2010   Wed   1400   6330   MCW   M94   935
T!
Mojave Desert, California USA