work on docs

Andreas Eversberg 5 years ago
parent d28a5df024
commit c6875ea412
  1. 4
  2. 14
  3. 40
  4. 4

@ -74,9 +74,9 @@ Implemented networks:
<li><a href="a-netz.html">A-Netz</a> (Germany)</li>
<li><a href="b-netz.html">B-Netz</a> (Germany) ATF-1 (Netherlands)</li>
<li><a href="c-netz.html">C-Netz</a> (Germany)</li>
<li><a href="nmt.html">NMT - Nordic Mobile Telephone</a> (Scandinavia)</li>
<li><a href="nmt.html">NMT 450 / 900 - Nordic Mobile Telephone</a> (Scandinavia)</li>
<li><a href="amps.html">AMPS - Advanced Mobile Phone Service</a> (USA)</li>
<li><a href="tacs.html">TACS - Total Access Communication System</a> (UK/Italy)</li>
<li><a href="tacs.html">TACS / JTACS - Total Access Communication System</a> (UK/Italy/Japan)</li>
<li><a href="radiocom2000.html">Radiocom 2000</a> (France)</li>

@ -560,6 +560,20 @@ FI,1 FI,9 81..89 1-399 Finland (Telecom Finland)
# nmt -N 900 -Y list
TA from TA to YY Code Channels Short Country (Provider)
DK,1 DK,9 11..19 1-2023 Denmark (Tele Danmark Mobile)
SE,1 SE,9 21..29 1-2023 Sweden (Telia Mobitel)
NO,1 NO,9 31..39 1-2023 Norway (Telenor Mobil)
FI,1 FI,9 41..49 1-2023 Finland (Telecom Finland)
In this example we select 'Sweden'.
You must set you phone to network 'Sweden' or 'SE'.

@ -146,6 +146,7 @@ Multiple Channels
Multiple channels can be useful, to keep the control channel, while establishing one or even multiple voice channels.
One nice things about SDR is that a spectrum is transmitted and not just one modulated carrier.
Because the carrier is actually generated in software, we can generate multiple carriers that fit in our bandwidth.
I suggest to have at least one channel space between channels you want to generate.
@ -158,9 +159,46 @@ In this case increase the sample rate (-s) to generate a wider spectrum. (--sdr-
Note that the CPU usage increases for the main thread.
I suggest to monitor the usage using "top -H".
You will see each thread. Be sure not to get too close to 100 percent.
I suggest to stay below 50%, at least for all threads.
I suggest to stay below 60% for each threads.
Example: C-Netz<br>
Two channes are created, one the OgK (control channel) and one SpK (speech channel).
The distance between channels is 20 KHz (two channels).
Because C-Netz uses only odd channel numbers for 10 KHz spacing, we use channel 131 (OgK) and 135 (SpK).
# cnetz --sdr-soapy \
--sdr-rx-gain 50 \
--sdr-tx-gain 30 \
--sdr-bandwidth 5000000 \
--sdr-samplerate 5000000 \
--sdr-tune-args "OFFSET=1000000" \
-s 100000 \
-k 131 -k 135 \
-C 0,0
Example: Test TV signal<br>
Give PAL 'FUBK' test image on TV channel 21.
# osmotv --sdr-soapy \
--sdr-tx-gain 60 \
--sdr-tune-args "OFFSET=-3000000" \
-r 13750000 \
-c 21 \
<hr><center>[<a href="index.html">Back to main page</a>]</center><hr>

@ -31,7 +31,7 @@ Total Access Communication System (TACS) and ETACS are mostly-obsolete variants
TACS is the UK version of the AMPS.
(J)TACS is the UK and Japanese version of the AMPS.
There are three major differences:
@ -42,7 +42,7 @@ There are three major differences:
Refer to <a href="amps.html">AMPS</a> documentation, but use executable 'tacs' instead of 'amps'.
Refer to <a href="amps.html">AMPS</a> documentation, but use executable 'tacs' or 'jtacs' instead of 'amps'.
<hr><center>[<a href="index.html">Back to main page</a>]</center><hr>