Re: Re[2]: [amsat-bb] "spontaneous" LEILA activation

[rolf.niefind@xxxxxxxxxxx (Rolf Niefind)]

 DK2ZF JO43VH

 May be the old french system for radioloacation  " S Y L E D I S " is back ??

  73

 Rolf 


Reinhard Richter schrieb:
> Hello Jim,
>
> Tuesday, September 25, 2001, 1:01:03 AM, you wrote:
>
> JW> Wayne Estes wrote:
>
> >> I frequently hear unexplainable LEILA sirens in the vicinity of 2401.400
>  MHz
> >> where there is hardly ever any transponder activity.  Once this weekend I
> >> was tuning across the transponder and heard the LEILA siren go nonstop for
> >> more than 90 seconds.  I don't know how long the siren was going before I
> >> stumbled onto it.  When I hear "spontaneous" LEILA sirens I verify that my
> >> uplink signal is notched, just to ensure that nobody is uplinking a
> >> recording of the LEILA siren.
>
> JW> Beats me.   I have heard that many times (and not just recently).  A few
>  minutes ago I was
> JW> calling CQ intermittantly, and just before I made a call, LEILA lit off
>  and ran for 21 seconds
> JW> (according to my clock), and there had been nothing there before she
>  started.
> JW> As to long runs of LIELA, I have seen that too.  I don't have a problem
>  with LEILA jumping on
> JW> me, and I stop transmitting right away, but frequently notice that LEILA
>  will continue for as
> JW> much as 45 seconds.  I have also verified that it's really LEILA by
>  verifying the notch.
>
> JW> 73
> JW> -----------------------
> JW> Jim Walls - K6CCC
> JW> k6ccc@amsat.org
> JW> http://home.earthlink.net/~k6ccc/
> JW> 626-302-8515    FAX  626-302-7501
> JW> AMSAT member 32537 / WSWSS member 395
>
>
> Hi Jim and the group,
> same happened to me at times when the westcoast was not in range of
> AO-40. It quite often happenes that my signal was notched by approx.
> 15 dB when I am running moderate uplink power and LEILA is not on my
> signal. However, I chave not checked so quickly if LEILA is anywhere
> else on the transponder present. Rather often I could hear LEILA above
> 2401.400 on frequencies which were not noticably occupied by any
> hamradio stations.
>
> > I frequently hear unexplainable LEILA sirens in the vicinity of 2401.400 MHz
> > where there is hardly ever any transponder activity. 
>
> 73
> Reinhard, DJ1KM
>
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