On Sat, Sep 11, 1999 at 12:08:44AM -0300, Pablo Bianucci wrote:
> Hi!
>
> I know tihs is somewhat offtopic, but I thought that I could find someone here
> who has the info I need.
> Does anybody know how to get/inject audio from/to the rig bypassing the
> microphone?
> I tried the soundmodem with the hapn4800 modulation and it gets a packet out of
> a hundred, but it decodes some packets after all, so I think that the mike
> connection might be bothering. I tried to find the right mod on the net, but I
> couldn't find any... :-(
> Thanks in advance!
Several years ago I tried 9600 with a TM421A, which is of the previous
Kenwood generation. You want to inject it at the same point as the audio
is fed to the modulator. The results weren't very good and some
stations were unable to copy my signal. I expect that the PLL bandwidth
is high enough to partially track out the modulation (and slowing down
the PLL would make the tx/rx transitions time too long). These are
typical problems with trying to modify synthesized FM radios (or with
using the so-called "9600-ready" radios).
Bob
--
Bob Nielsen Internet: [EMAIL PROTECTED]
Tucson, AZ AMPRnet: [EMAIL PROTECTED]
DM42nh http://www.primenet.com/~nielsen
