[TenTec] Effect of roofing filter selection on Orion II NB

[Sinisa Hristov]

Grant Youngman wrote:

> So I remeasured it, just a minute ago.  Very simple.  Used a TS-585D/U Audio
> output meter on the radio's output (one channel to monitor, one channel for
> the meter.  (1) With NR off set the baseline noise level to read 0dB on the
> meter.  (2) Tuned to signal, read output level in dB.  (3) Turn on NR
> (signal level will drop) and adjust audio output to restore the signal level
> reading in (2).  (4) Read background noise.


Was the step 4 measured with no signal audible, just the noise?


73,

Sinisa  YT1NT, VE3EA