K8BB writes:
> Can anybody offer an alternative solution for somebody who still has
> very-wide-frequency hearing? I am not really looking for a "ham radio audio
> filter" as much as I am looking to improve the poor-quality audio coming
> from the audio amplification stage of my receivers.
I have the same issue - and still hear things others can't at the high end.
Two solutions I have seen:
1. Back before we had audio filters, there was a circuit in the older handbooks
called something like a crud-o-ject. It was a passive audio filter that had
some big inductors in it - and really did a good job eliminating hiss.
2. Currently, I run my audio from my rigs through a radio shack Stereo tuner/
amplifier. When using it for ham radio, I adjust the tone controls for
minimum highs and low - giving me good rejection of the hiss coming from my
radios.
Most any other device - like an audio filter - is going to have the same hiss
problem - because it appears that most audio designers have done a better job
of blowing out their hearing than we have. I used to use a Radio Shack mixer
with my rigs - but finally couldn't handle the hiss any more. Another solution
would be an expensive mixer (i.e., quiet) with equalization controls that you
could use to cut everything above about 5 kHz out.
73 Tree N6TR
tree@kkn.net
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