Kurt:
I am a pilot and fly in the SF Bay often. In fact, I fly out of Palo Alto.
I finally got a chance to pull out my charts. Although you are located a
couple of miles
from the west end of the Livermore (LVK) airport runway 25 L / R, there does
not
appear to be any close tower or CTAF
; drcuthbert
drcuthb...@micron.com; Kurt Fischer kurt.fisc...@hyperinterop.com;
emc-p...@majordomo.ieee.org
Sent: Wednesday, February 12, 2003 4:55 PM
Subject: RE: Real product interference source at 121 MHz
What are the 3 and 6 db points of the 121.5 Mhz skirts? The original note
was 121 Mhz. How wide
; emc-p...@majordomo.ieee.org
Subject: RE: Real product interference source at 121 MHz
Kurt,
In my Air Traffic radio repair days I became intimately familiar with 121.5 and
243 MHz. These are the emergency frequencies used N. America. They are used
for locating both the plane and pilot
This is a multi-part message in MIME format.
121.5 MHz is the emergency com channel and the ELT alert channel for aviation.
Might be bleed over?
Michael Sundstrom
NOKIA
TCC Dallas / EMC
of: (972) 374-1462
cell: (817) 917-5021
amateur call: KB5UKT
---BeginMessage---
This
121.0 is used by Aircraft and ATC -- I do know it's a tower frequency in
Austin Texas and probably in other locations as well...
Best Regards,
Mike Hopkins
From: Kurt Fischer kurt.fisc...@hyperinterop.com
To: emc-p...@majordomo.ieee.org
Sent: Tuesday, February 11, 2003 10:02 AM
Subject:
Kurt,
Can you be more precise? Is it really 121.000 MHz? There are a number of
low-power, possibly even individually compliant, digital sources which
could be heard around 121 MHz; knowing the exact frequency would allow
pinning it down to one of several clock frequencies, if it is such a
I recall that the FCC found a problem in this frequency range in the
Northwest a few years ago that was related to powerlines.
Of course, a directional antenna, spectrum analyzer, and a van would be
useful...
From: Kurt Fischer [mailto:kurt.fisc...@hyperinterop.com]
Sent: Tuesday, February
Hi,
You might want to poll some of the FCC Open Air Test Sites (OATS) in the
area and see if they have noticed it as a new ambient. Using multiple site
data, you might be able locate where the emitter is and when it started to
become a problem.
Your results might be very surprising.
Philip
Kurt,
this could be aviation communications. AM voice is centered at about 121
MHz.
Dave
From: Kurt Fischer [mailto:kurt.fisc...@hyperinterop.com]
Sent: Tuesday, February 11, 2003 8:03 AM
To: emc-p...@majordomo.ieee.org
Subject: Real product interference source at 121 MHz
Hello all,
A
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