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Line 168: − ==Squelch Issues==+ + + + + + + + + + +
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=Squelch Issues=
*If anyone is off frequency a little bit, that will make the voice talk off worse. Double check that the repeater and the users are all on frequency.
*If anyone is off frequency a little bit, that will make the voice talk off worse. Double check that the repeater and the users are all on frequency.
*Don't use narrow bandwidth on the repeater receiver.
*Don't use narrow bandwidth on the repeater receiver.
*Make sure that the discriminator audio is not rolled off even a little bit at the high end. There should not be resistors in series or capacitors to ground between the discriminator chip output pin and the voter board input, for best results.
*Make sure that the discriminator audio is not rolled off even a little bit at the high end. There should not be resistors in series or capacitors to ground between the discriminator chip output pin and the voter board input, for best results.
==Motorola Quantar==
Some things to consider:
*Install JP1 on the Quantar's RTCM. The squelch should calibrate at around 4 blinks rather than the 12 blinks or so without JP1.
*Be sure you've done the diode and squelch calibration with the actual attached radio (no antenna).
*The Quantar firmware should be 20.14.48 as later versions have better noise output.
*Try the "Chuck Squelch" RTCM version.
*Each RTCM should have 3 to 5 turns past threshold to prevent the squelch form being too loose. Somewhere around the 350 level seems about right. Chuck Squelch seems to need fewer turns but YMMV.
*Don't "and" CTCSS with squelch. That may override the RTCM's squelch detection. Compare with CTCSS on and off to see effect if any.