[Amps] SB-221 Problem - Slow on the uptake

[James Colville]

What is the input SWR?  What does the exciter show it is?

Jim W7RY



On Thu, Feb 18, 2010 at 7:04 PM, Rex Lint <rex at lint.mv.com> wrote:

>  Does it with ALL exciters.  Guess the input network is something we
> haven't looked at though.
>
>
>
> Thanks,
>
>
>
>       -Rex-
>
>
>
>      K1HI
>
>        Rex Lint
>
>        Merrimack, NH
>
>
>
> *From:* James Colville [mailto:jimw7ry at gmail.com]
> *Sent:* Thursday, February 18, 2010 8:15 PM
> *To:* Rex Lint
> *Cc:* Amps; Jerry Muller; Lee Hill
> *Subject:* Re: [Amps] SB-221 Problem - Slow on the uptake
>
>
>
> Sounds like your exciter has a problem...Or it has a problem with the load
> (amplifier).  Why not simply key the amplifier BEFORE you put the rig into
> transmit mode?
>
>
>
>
>
> 73
>
> Jim W7RY
>
>
>
>
>
> On Thu, Feb 18, 2010 at 9:01 AM, Rex Lint <rex at lint.mv.com> wrote:
>
> Hi Wizards,
>
> After I replaced the TR relay, the amp seems to take a 20 milliseconds to
> develop full output.  That tends to clip off part of the first CW
> character.
>
>
> We jumpered the bias ON, then switched the AMP KEY relay and the output is
> not up to full output right away, so we determined it's not the bias.  We
> disconnected the ALC circuit at the joint with the output from the input
> circuits, and still no joy.  Other recent mods:  rebuilt the bias circuit
> after parasitic incident, including replacing zener.
>
> Any ideas as to what might cause this?
>
>      -Rex-
>
>     K1HI
>       Rex Lint
>       Merrimack, NH
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> No virus found in this incoming message.
>
> Checked by AVG - www.avg.com
> Version: 9.0.733 / Virus Database: 271.1.1/2695 - Release Date: 02/18/10
> 02:34:00
>
>