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authorAndreas Eversberg <jolly@eversberg.eu>2017-10-09 20:49:14 +0200
committerAndreas Eversberg <jolly@eversberg.eu>2017-10-22 19:23:08 +0200
commitb32e0ab6025a025850dc0079fa6596a96d7295a6 (patch)
tree199098e532a80417d5a3a18e80172280ccb84cad /docs/a-netz.html
parentf7a0e4622bed9551bb0999d3c54bb69249065d38 (diff)
Implementation of RX level squelch (for A-Netz and B-Netz)
Use -S <dB> for setting RF level or use -S auto for auto level. When squelch closes, audio is muted. If squelch is closed for some seconds (depending on network), call is released. (RF loss condition) The previous loss detection has been removed
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@@ -259,6 +259,9 @@ Be sure that the phone turns off the transmitter and indicates the (green) light
<p>
Level adjustment:
+</p>
+
+<p>
We see a receive level of around 140%.
Then start the base station using '-l 2' option for loop-back and tune receiver to the transmitter.
The base station generates a 1750 Hz test signal, just like the mobile phone.
@@ -308,6 +311,9 @@ Be sure to check: Does your transmitter has enough frequency deviation (15 KHz i
<p>
Detecting loss of carrier signal:
+</p>
+
+<p>
To automatically release the call, when the carrier signal gets lost, look at the B-Netz page.
It is the same principle.
</p>