hamzrstrange@mail2michigan.com

Pete KE9OA wrote:
> > Sounds like it might be a little too hot for the band.....
>
> I am not sure what you mean.
>

> >
> >> I do have the service
> >>manual, but I have never seen this kind of problem.
> >
> >
> > Never assume the manual is correct. Establish a baseline by injecting
> > a single tone post-AGC, run it up to 100% and measure. Then re-align
> > the AGC to your mic according to that baseline.
>
> I might inject the signal right at the audio amplifier and work backwards.
> >
> >
> >>For testing purposes, I am using a CT Systems Model 3000B Communications

You should contact marqueer..........he/she is the RRAP expert on moon
bounce.
> >>Test Set. For the brief time that Tx audio is present, the modulation
> >>envelope looks fine. This unit has a built in 100W dummy load.
> >>RF output is flat across the band, at 4.5W, so it doesn't look like
> >>somebody
> >>tried to align the exciter/output stages.
> >
> >
> > Sounds like it may have an RF limiter. If you have a pulse generator,
> > hit the audio with 0.1ms spikes. That will also tell you if the audio
> > limiter has been disabled.
>
> I'll give that at ry.
> >
> >
> >>It looks like I will have to do some signal tracing with an o'scope.
> >>Hopefully, I will be able to find that 5-pin mic plug so I can make up a
> >>test cable. Thanks again for the advice!
> >
> >
> > No problem. If you ever get around to scanning the manual I wouldn't
> > mind having a copy.
>
> I will do that. I only can scan up to 11 X 14 size, so the schematics will
> be broken pages,but that should be fine.
> >
> >
> >> I think I remember you as also
> >>working in the RF industry.
> >
> >
> > On occasion.
> >
> >

an old friend

On Feb 17, 5:37 pm, hamzrstra...@mail2michigan.com wrote:
>
just another staker thread