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Diffstat (limited to 'docs/a-netz.html')
| -rw-r--r-- | docs/a-netz.html | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/docs/a-netz.html b/docs/a-netz.html index 280cad1..d91534c 100644 --- a/docs/a-netz.html +++ b/docs/a-netz.html @@ -288,11 +288,19 @@ Also be sure that you are actually dialing the right number, so the base station </p> <p> +As there is no emphasis, a transmitter with pre-emphasis will drastically lower the paging tones. +If you cannot disable pre-emphasis on the transmitter, try to raise the gain of the paging tones. +Add command "-V 12" to increase gain. +The frequency deviation of all 4 tones should be around 11 kHz. +</p> + +<p> Instead of transmitting all 4 tones at once, they can be transmitted after each other. Each tone is plays for a short time. After the last tone has been played, base station starts again with the first tone. My phone also responds to a call, even if the tones cycle rather than sent simultaneously. -In this case the deviation level of each tone is two times higher (+6 dB). (The level transmitted is two times lower (-6 dB) than the peak level of 4 simultaneous tones. This may help transmitters with deviation limiters to make the phone ring.) +In this case the deviation level of each tone is four times higher (+12 dB). +This may help transmitters with deviation limiters to make the phone ring.) Add command line option "-P 100" to send each tone for 100 milliseconds. Try something between 50-200 milliseconds, if the phone still doesn't ring. Be sure to check: Does your transmitter has enough frequency deviation (15 KHz is suggested)? Do you really send the correct number of your phone, check the frequencies of your phone and use "-D 0" option to see what 4 frequencies the base station actually transmits. |