24-hour signal strength plot of 470.3125 Mhz.
Preliminary research seems to indicate that it correlates with the ACE Solar Wind Density Data for the same period.
Subscribe to:
Post Comments (Atom)
skip to main |
skip to sidebar
This-and-that in the life of a Northwest astronomer.
Blog Archive
-
▼
2013
(40)
-
▼
November
(15)
- Strange Radio Emission Event on 20.1 Mhz
- Moon Crossing
- QUIET SUN
- HOW BIG IS A SUNSPOT???
- THE SUN: Nov. 19
- FM METEORS
- COMET ISON: Nov. 16 (spaceweather.com)
- CHANCE OF FLARES (spaceweather.com)
- SUNSPOTS UPDATE: Nov. 11, 2013
- 470.3125 Mhz and Solar Wind?
- 470.3125 Mhz
- ACTIVE REGION #1890 (spaceweatherlive.com)
- BIG SUNSPOT FACES EARTH (spaceweather.com)
- CHANCE OF FLARES (spaceweather.com)
- SUNSPOTS: Nov. 3
-
▼
November
(15)
1 comment:
Sounds like a weak FM carrier BARELY into limiting at one point ... the 'bursty' stuff is noise capturing the receiver from the carrier as the carrier gets really weak.
Probably spectroscopic scatter (tropo) due to an inversion or 'frontal' passage.
I could replicate this easily using any FM receiver and a signal generator.
Aurora would be raspy and add some easily notifiable characteristics to the 'modulation' due to rapid phase shifting and 'movement' of the aurora (think: Doppler phase shifting).
This was just a weak signal 'wafting' into your receiver from a stuck mic somewhere ...
Take a listen to the area around 29.66 MHz for 10m FM repeaters and you'll hear the same thing.
_Jim
Post a Comment