[ARC5] ARA 46104 CW S+N/N ratio

[Kenneth G. Gordon]

Conditions: BFO on. Both AF and RF gains maximum. 2.0 MHz. Input level: 1 microvolt

No-signal average noise level: 1.0 V

Average level output at 1 microvolt input: 4.0 V

S+N/N ratio: 12.0412 db.

Average level output at 0.3 microvolt input: 2.0 V

S+N/N ratio: 6.02 db

All values approximate.

Although I can clearly hear the signal at 0.1 microvolt, I cannot see any difference on the 
scope between the no-signal noise level and the signal-plus-noise level.

Well, this has been an interesting exercise, but I am still not sure what it means.

Ken W7EKB