OK. dreamers, the TX is on the air since 1309UTC.
WX: continuous rain but not so strong.
when ever the order
comes, I can switch to Op-4H.
Von: [email protected]
Gesendet: 03.01.2014 13:21
Kopie: [email protected]
Fw: VLF: 8.275 kHz
Paul Nicholson put
forth the important argument that we'd better stay away from 8280 because
it's a multiple of 60 Hz. Mains harmonics tend to drift a bit with the
line frequeny so further away is better.
Thus I retract my
preposition, and suggest instead to stay with the original 8270
PS Direct harmonics
from 16.67 Hz are relatively weak here, even though the railway is only 400
m away. It looks more like carriers from switchmode power
conversion units (eg near 8 kHz), accompanied by the telltale
33 Hz spaced sidebands. Unfortunately these frequencies are not easily
Sent: Friday, January 03, 2014 12:56 PM
Subject: Re: VLF: 8.275 kHz
8970 is well placed with respect to harmonics of
50 and 60Hz.
8270/8275 not so good in a 60Hz region.
8126 would be a good range, considering
harmonics of 16.67Hz, 50Hz, and
Let me know what is decided, I will switch my
over to the new band.