[Pro2006] Re: 2006 Audio Hiss

[Len G. Carpenter]

What he needs to do is get a copy of one of the scanner recorder programs for his
computer, they all seem to work great and you can set the sensitivity on it so it
will ignore the hiss.
You will also never run out of recording room unless your hard drive is small or
low on space.

SMacken@aol.com wrote:

> Unfortunately most modern tape recorders have a pretty decent Automatic Gain
> Control
> circuit which attempts to keep whatever audio is available at a decent
> recording level.
>
> This is great for getting good recording at a lecture but a nightmare when
> using the VOX feature.
> The relatively small hiss is amplified to the point that the recorder begins
> recording
> it and when a real signal appears (Squelch opens) the recording is hugely
> overmodulated for a moment as the recorders AGC attempts to lower it.
>
> Some have used a small .001 capacitor and placed this across the recorder
> output jack on the rear of the 2005/2006. This will however effect the sound
> quality by removing some of the low end portion of the audio.
>
> I found that it was simpler to place a 1k ohm resistor in series with the
> center
> lead of the wire from the scanner to the recorder.
>
> Each recorder will need a different value resistor ( Different gain ) so try
> a temporary
> 500, 1k and 1.5k ohm resistor from the junk box until you find the level that
> you like.
>
> I found that a higher value resistor made the recording have less AGC pumping
> because the signal level was ow enough that the AGC was already at near max.
>
> Then shrink sleeve it and you have a nice attenuating patch cable.
>
> Good luck
> S
> out
>
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