[ARC5] BC-454-B Dymamotor Question

[Tim]

Hi Mark - getting on on this thread late...I had a similar problem with one
of mine.  I tried a temporary short ground strap from the dyno base plate
to the radio chassis - cleared up the noise which told me it was "dyno
dynamics" causing the problem rather than something in the receiver
circuitry like an arcing Cap.  The usual dyno remedies as discussed here
worked and all is quiet now....
73
Tim
N6CC

On Thu, Jan 17, 2013 at 4:39 PM, Mark K3MSB <mark.k3msb at gmail.com> wrote:

> When using the dynamotor on the BC-454-B, there's a constant loud buzz in
> the audio that I would think is coming from the dynamotor as it sounds like
> a motor sound.   I tried both dynamotors in the radio and one seems a lot
> less pronounced, but still strong.
>
> I then wired in separate 250V and 28V supplies (non dynamotor) and the
> receive audio is great.
>
> Is what I'm hearing with the dynamotors normal?
>
> 73 Mark K3MSB
>