Bill, W6WRT wrote:
> ORIGINAL MESSAGE:
>
> On Sat, 30 Jan 2010 22:40:47 -0500, Roger <sub1@rogerhalstead.com>
> wrote:
>
>
>>>
>>>
>> With full carrier and full output, you can also adjust the ALC so it
>> just becomes active. Then when talking keep the drive down to the point
>> where you are just under where the ALC becomes active, but don't use the
>> ALC to limit the output or it'll really splatter.
>>
>
> REPLY:
>
> There are two kinds of ALC and I think Roger is talking about the kind
> of ALC that is fed back from the amplifier to the transceiver. With
> that kind, I fully agree with the above.
>
> But there is also ALC that is generated entirely within the
> transceiver (such as my IC-756Pro3), and is completely independent of
> the amplifier. With that kind you can safely use ALC to limit the
> drive and it does an excellent job, I might add.
>
True, I too have one, but if the exciter is over driven using lots of
compression with the ALC serving to limit the output they can sound
pretty nasty too. <:-)) The other night I was working some DX on 40 when
a German station came on and told me I had a terrible sounding signal
and was not at all diplomatic about it either. <:-))
I discovered I must have hit the audio gain control while making up some
jumper cables...only thing I can think of. At any rate the audio gain
was full up CW. A quick check showed the ALC darn near pegging the
meter. I reset the gain, alc, and compression to where I normally run it
and it appears to be find.
One thing I don't understand was why none of the other contacts
commented on the signal. It had to have sounded pretty bad.
73
Roger (K8RI)
> And if you use the internal type of ALC, you don't need the fed-back
> kind at all.
>
> 73, Bill W6WRT
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