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Author Topic: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018  (Read 739 times)

Offline skeezix

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WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« on: June 22, 2018, 0037 UTC »

25 MHz
0025Z 35433 S5 OM time announcement for 0026
0026Z 35433 S5 Time pips
0026Z 35433 S5 OM time announcement for 0026
0027Z 35433 S5 Time pips


20 MHz
0028Z 55444 S9+ Time pips
0028Z 55444 S5 OM time announcement for 0029


15 MHz
WWV
0029Z 55444 S9+ Time pips
0029Z 55444 S9+ OM time announcement for 0030
0030Z 55444 S9+ OM WWV ID

WWVH
0029Z 11441 YL WWVH ID, address, etc


10 MHz
0031Z 55445 S9+10 Time pips
0031Z 55445 S9+10 OM time announcement for 0032


5 MHz
0032Z 45334 S9+ Time pips
0032Z 45334 S9+ OM time announcement for 0033


2.5 MHz
0033Z 15341 S- Time pips. Barely audible. S7 noise
0034Z 15341 S- Top of the minute tone. Unable to hear the OM voice.


WWVB
60 kHz
0034Z 15351 WWVB's signal is weak, but readable. QRM is making LW below 50 kHz difficult. 




Perseus SDR with Bonito Boni-Whip antenna
Minneapolis, MN

Offline Josh

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #1 on: June 22, 2018, 2055 UTC »
It's fun to pick off the bcd time sig embedded in the wwv carriers. You can pick it off with a 50Hz filter if you tune off the carrier. This is a nice test for displaying the abilities of dsp filtering.
Conveniently located near Vincennes Indiana.

Offline R4002

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #2 on: June 29, 2018, 1026 UTC »
Apparently at one point in time WWV transmitted on 30000 and 35000 kHz (30.000 MHz and 35.000 MHz).   

I really love the 25 MHz WWV signal, having references on 30 MHz and 35 MHz would be great for indicating sporadic E on 11 meters/10 meters, VHF low band and 6 meters.  Still, 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz and 25 MHz are awesome to be able to hear all at once
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers

Offline Σ

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #3 on: June 29, 2018, 1205 UTC »
Apparently at one point in time WWV transmitted on 30000 and 35000 kHz (30.000 MHz and 35.000 MHz).   

I have never heard of this. Do you know what years they did this in the past?
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Offline sat_dxer

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #4 on: June 29, 2018, 1437 UTC »
Apparently at one point in time WWV transmitted on 30000 and 35000 kHz (30.000 MHz and 35.000 MHz).   

I have never heard of this. Do you know what years they did this in the past?

30 & 35MHz added in December 1946; discontinued in January 1953[1] 

[1] NIST Special Publication 250-67 p.4
Most times & frequencies posted are only an approximation.
Due to adulteration of the E.N.I.G.M.A. "designators" by others and not a match in the Conet Project they are never used.
-30-

Offline skeezix

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #5 on: June 30, 2018, 0108 UTC »
I'd absolutely love to hear them on 30, 35, 40, 45, 50, and 55 MHz.

Although, these days, those would be mainly Es, but in previous cycles the lower of these may have been F2.
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Offline R4002

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #6 on: July 02, 2018, 1727 UTC »
30.000 MHz, 35.000 MHz and 40.000 MHz all lie within military/government portions of the 30-50 MHz VHF low band allocation as well.  30.000 is the "default" channel for the US military's SINGCARS VHF-FM radio system in single channel/SC (read: non-frequency hopping, or "FH") mode  <--- fun fact.  45.000 MHz is a public safety frequency and 50.000 MHz is, well, hopefully you all know what that's a part of.  With the migration of broadcast TV stations to the VHF-high and UHF bands with the DTV transition I could see 55 MHz though.

Still, having WWV on 25.000 MHz is awesome.  I love chasing sporadic-E DX on the 11 meter band and, when it's around, in the 30-50 MHz VHF low band portion.  There's still heavy use of the 30/31 MHz region by various land mobile systems around the country, and then of course there's Latin America.  Not to mention the 33 MHz fire department band, which, believe it or not, is still used extensively in certain areas.  I remember one band opening where I scanned 29.7 MHz to 35 MHz and 33-34 MHz was nothing but fire dispatch traffic, 30.58 MHz to 32 MHz was seemingly endless Spanish language chatter (all in FM mode with CTCSS or DCS tone squelch) ...a stray trucking company or construction crew thrown in for good measure. 

I don't know if its still active and/or on the same frequency but another good indicator of a Sporadic-E opening used to be Fort Hood Texas range control on 30.450 MHz FM (150 Hz CTCSS, but often decoded as 151.4 Hz CTCSS). 
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers

Offline Josh

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Re: WWV/WWVH 2.5-25 MHz 0025 UTC 22 June 2018
« Reply #7 on: July 02, 2018, 1739 UTC »
It's lovely to have wwv @ 25MHz, makes it very easy to set the ref oscillator in sdrs/sdr apps and analog rigs.
Conveniently located near Vincennes Indiana.