In 1973, Explorer 49 was placed in orbit
around the moon, It studied LF emissions
from the sun, Jupiter and other solar system
sources.
See:
http://solarsystem.nasa.gov/missions/profile.cfm?Sort=ChronMCode=Explorer_49StartYear=1970EndYear=1979Display=ReadMore
73 Armando, N8IGJ
Also see:
http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1973-039A
- Original Message -
From: Armando Mercado
To: amsat-bb@amsat.org
Sent: Monday, December 13, 2010 4:26 PM
Subject: RE: LF Satellite
In 1973, Explorer 49 was placed in orbit
around the moon, It
Has anyone considered the possibility of applying for an experimental
license for such an experiment?
AA1VS
On Sat, Dec 11, 2010 at 9:13 PM, John Magliacane kd...@yahoo.com wrote:
--- On Sat, 12/11/10, Bob Bruninga bruni...@usna.edu wrote:
Is 137 KHz possible from space?
Bob,
My
Hi Bob.
Drats. Bad news.. Good news!
I don't think the ionosphere will allow 160 meter downlink propagation... on a
regular basis, at least.
UoSAT-OSCAR-9 carried HF beacons on 7, 14, 21, and 28 MHz, and if I recall
correctly, the only beacon never heard was the one on 7 MHz.
So, receiving
Bob -
I apoligize for the tardinesss of reply to your query.
December is a busy time for me with projects finishing and planning for
2011 projects.
I would suggest the University of Alaska's work with Red Sprites and Blue Jets.
http://elf.gi.alaska.edu/
What are Red Sprites and
Stanford University's VLF Research Group
http://vlf.stanford.edu/research
The Stanford University VLF Group investigates the Earth's electrical
environment, its upper atmosphere, lightning discharges, radiation belts, and
the ionized regions of upper atmosphere known as the ionosphere
--- On Sat, 12/11/10, Bob Bruninga bruni...@usna.edu wrote:
Is 137 KHz possible from space?
Bob,
My understanding is that LF and VLF emissions of terrestrial origin don't get
beyond the 'D' layer, even at night. In fact, the 'D' layer acts as a
reflector, rather than an attenuator at these
My initial 1100m long satllite antenna idea (with no knowledge of propogation
possibility through the ionosphere) is:
a) connect a product detector (SSB) receiver to the 1/2 wave 137 kHz satellite
antenna and downlink the audio that it hears on the UHF FM downlink. Then
anyone can hear the
