Radio receiver set in ssb mode while observing 452.400 mhz

452,400 mhz ssb

6210khz5 - 30 - 15

Unusual pulse transmission observed on 7050 khz 22 Nov 15 at 1820 utc. Signal strength is quite strong into the pacific northwest, past several hours signal propagation is from Indonesia/South China Sea region. I'm quite sure this pulse emission is from that area of the world. This signal transmits every 20 seconds and after 15 minutes it stopped.

RFI 7050 1820 Z 22nOV15.WAV

10470 Khz 0230 Utc 22 Nov15.WAV

 Recorded this radio transmission on frequency of 413.110 mhz using AM mode, I feel that a far better recording of this unique data burst was obtained using AM mode rather than typical FM mode.
 Source of this data burst transmission is unknown at this time. Highly recommend you check this frequency for any similar signals in your area ! You may be the intended source of this data without realizing you are the data.

413.110 Mhz Wideband Am.WAV

Strange signal received using a UHF receiver. Near the end of the recording a somewhat garbled morse code ident is sent. This signal is transmitting 24 hours a day, on 451.550 mhz. Using some bizarre data format and a morse code identification at 59, 19, 39 and 59 minutes each hour. The morse code is quite garbled, I've copied it as  09ww9970   any help with this would be appreciated. 


451551khz

Unusual signal on 5340 khz, observed on 25 Jun 2016 at 13:30 utc  Has a somewhat wide bandwidth, extends from 5320 khz to 5350 khz. Signal strength is amazingly strong in Alaska despite the current poor atmospheric propagation conditions. Has a periodic fade, obviously being at least one hop via the ionosphere. Suspected origin of the radio emission at this time is from the Aleutian Chain.

5340 Khz

Unusual signal detected on 8105 khz  5 Nov 2011  1840 utc
http://swl-nomad.blogspot.com/

8105 khz

Radio emission which is blanketing the hf, vhf and low uhf radio spectrum here in southcentral Alaska. 

Rfi sample

In my haste to upload this recording, I've incorrectly named it ! This recording is of a signal being emitted around Anchorage Alaska on the frequency of 400.902 mhz. My receiver was set in SSB and tuned 1 khz below the signals exact zero beat. There is a slight fade at times to this signals signal strength, somewhat cyclic in nature. Quite unusual for a uhf signal. I have no idea what type of radio transmission this is !  Curious if others are hearing it as well. My initial suspicisons are that it is coming from a geostationary satellite or space hardware. If so, a global audience ! I have posted this signal comments at: www.swl-nomad.blogspot.com

400902 mhz

Receiver set in SSB, wide bandwidth signal strength peaked at 7910 khz. Signal extends
from 7880 khz to 7925 khz. Extremely strong signal strength in southcentral Alaska on
23 Feb 2013 at 1750 utc. This emission stopped at 1705 utc. 

The source of this strange radio signal is unknown. I've never encountered anything
like this in the radio spectrum before. Signal strength peaked at 60db over S9 at
on point before it disappeared, was not of local origin. 

7910khz digital emission

I am on an endless quest to explore the RF spectrum.



Alex Topeki

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