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LF: Re: former/future usage of german LF frequencies

To: "rsgb_lf_group" <[email protected]>
Subject: LF: Re: former/future usage of german LF frequencies
From: "Dave Sergeant" <[email protected]>
Date: Thu, 16 Sep 1999 19:01:34 +0100
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
From Dave G3YMC
Having read in more detail the German original of the proposal to allocate 
various LF frequencies to the pager service I note the following.

The questionaire appears directed at potential users of these frequencies for 
pager services - ie there may be several networks operating independantly.  It 
implies however that one individual network will use a single transmitter 
designed to cover the whole of Germany.  On that basis it would also be quite 
strong in most of the rest of western Europe.

The modulation is data in a 500Hz bandwidth, time multiplexed, and presumably 
is fairly similar to DCF39.

The notes point out that the 136.8 frequency is already allocated on a primary 
basis in countries outside DL, and any allocation must not cause interference 
to these.  Perhaps there are even more transmitters liable to appear 
unannounced on it!

Closing date for comments on the proposals is October 1st.  Perhaps some input 
from the DARC and RSGB would be appropriate before that date - but it is not 

There is no indication of when the formal allocations would be made or when 
transmissions would commence.

It would be unfortunate if the 136.8 transmitter came on, but in reality there is probably little we can do about it in a shared band.
73s Dave G3YMC
[email protected]

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