Re: [wsjt-devel] official ICOM response to ALC deflection on their rigs

[Topher P. <ai...@gm...>]

Mike:
I'm getting 100 Watts from my IC-718 without any ALC deflection, if I
choose to run at the full 100 Watts.  The 718 and the 706 are from the same
era of ICOM design, so the fact that you're only able to get to 90 Watts
without deflection surprises me. I'll have to de-mothball my 706 and see
how it behaves.
73 de Ai8W, Chris

On Fri, Jun 14, 2019 at 11:25 AM Black Michael via wsjt-devel <
wsj...@li...> wrote:

> Because the ALC meter is related to other things besides just power level
> like audio level input.
>
>
> ALC is a protection circuit
> ALC overshoot is a common problem (and not good for electrical components)
>
> And if you can get 90W without ALC why push it?
>
> I just did this on my old IC-706MKIIG and can get 90W on FT8 and PSK31
> without any ALC indication.
> And my PSK31 intermod runs right at -24dB.  Harmonics on the 706 with FT8
> aren't all that great running about -30dB.
>
> If there's anybody out there that can't get 90W without ALC please contact
> me as I'd like to ensure the rig notes that I add to my paper are accurate.
>
> de Mike W9MDB
>
> On Friday, June 14, 2019, 06:56:07 AM CDT, Tom M0LTE <to...@m0...>
> wrote:
>
>
> How is this any more complicated than set rig TX power to 100%, connect a
> dummy load, then reduce audio drive level so power meter reads less than
> 100% in the middle of the passband?
>
> Tom M0LTE
>
> On Fri, 14 Jun 2019 at 07:39, Roeland Jansen <roe...@gm...>
> wrote:
>
> "However, the action of ALC meter depends on balance between the
> modulation level setting of your transceiver and the audio output level of
> your PC.
> Please adjust them with seeing the ALC meter.
>
> As you already know, if the ALC meter indicates within the ALC zone, there
> is no problem.
>
>
> Best Regards,
>
> <deleted name>
> Icom World Support Center"
>
> so:
>
> --> As you already know, if the ALC meter indicates within the ALC zone,
> there is no problem. <--
>
> -----------------------------------------------------------------------------------------------------------------------
>
> This is icom specific and for ssb-d modes where a PC injects the audio
> into the TRX.
> (e.g. wspr, ft8, ft4 etc etc)
>
>
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