[Lowfer] Propagation

[Lewis Denton]

Ok John, Bill,
  Thanks for the reply.
 It seems a little clearer now, I guess the power level also helps the Loran
sig. to get through in the day time while the Lowfers are almost non
existence at this distance.
other than Mitch, the closes Lowfer is several hundred miles from me. of
course XSR is in every day all day.abt. 100 miles.
    what we need is a noise canceling circuit. I tried two identical Audio
xmers on the out put out of phase, but with one receiver you would need
another circuit to split and eliminate the sig. on one. if I had two
identical receivers it might work.
Lewis
IP
God Bless America
----- Original Message -----
From: "John Andrews" <w1tag@charter.net>
To: <lowfer@mailman.qth.net>
Sent: Wednesday, September 10, 2003 03:18 PM
Subject: Re: [Lowfer] Propagation


> Lewis,
>
> The loran stations' power is constant 24/7. I think you answered your own
> question, though, by saying that your noise levels are quietest during the
> day. Same here. Some of the Loran lines will disappear in the static
crashes
> at night. Same thing holds true for Lowfer signals!
>
> Yes, the propagation at night will have fading, so those lines may come
and
> go. On signals that are close enough to be heard in the daytime, you may
get
> some high angle ionospheric reflections that add and subtract from the
> surface signal. So a steady daytime signal may definitely fade at night.
> Plus with Loran, you are getting those lines from more than one
transmitter
> site, further complicating the issue.
>
> The quieter daytimes come from two things. First, thunderstorms are more
> common in the afternoon and evening hours. Second, a lot of that nighttime
> noise is arriving by skywave, just like the signals you'd prefer to
> see/hear. Daytime skywave propagation at LF is low to non-existent, except
> possibly in the dead of winter.
>
> John A.
>
>
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