[TenTec] Orion NR problem

[Grant Youngman]

> 	1. The introduction of NR has no effect or the noise 
> level increases.

Not sure about the squelch, since I have never used it and don't know how it
behaves.

If you have increased the AGC threshold, either with the THRESHOLD control
or possibly by the curent link between RFGAIN and THRESHOLD now on the RF
gain control, it is normal for the noise level to appear to increase when
you engage NR.  What's really happening is the THRESHOLD level has been
reduced.   This happens because in the current firmware, engaging NR
readjusts the THRESHOLD level to a lower value to optimize the environment
for effective NR.

Grant/NQ5T