[Kenwood] ALC with Kenwood TS-830S

[Steve H]

Rick

I guess I need an attenuator then. It would have to be able to take 100W
and bring it down to 5-10w for the hf bands.

--
Steve Hearns
KA2PTE

----- Original Message ----- 
From: "Rick NK7I" <rick.nk7i at gmail.com>
To: <kenwood at mailman.qth.net>
Sent: Monday, March 29, 2021 2:32 PM
Subject: Re: [Kenwood] ALC with Kenwood TS-830S


> Steve,
>
> I haven't done this. Traditional wisdom is to NOT use the ALC to limit the 
> amp, that causes issues like flat topping and distortion of the audio.
>
> If you're using an audio mode, try providing less audio (less drive). Or 
> put an attenuator pad on the amp input so it requires more drive (which 
> must be able to safely dissipate that power).
>
> 73,
> Rick NK7I
>
>
> On 3/29/2021 11:23 AM, Steve H wrote:
>>
>> Trying out this alternative to using an attenuator
>> with my 830S and an older linear that only needs 5-10W to excite.
>>
>> Was told to get pin 6 on the remote connector din and get a 9v battery 
>> with
>> a 225k potentiometer on it and feed the wiper as per the attached
>> illustration.
>>
>> Thats seems to be for the 520/820s now that I notice. Turns out all the
>> hybrids use pin 6 for the alc, but I notice they are putting the gnd into
>> pin 4 on this diagram.
>>
>> https://www.mediafire.com/view/5sf9ovlmvhvkqjv/alc.jpg/file
>>
>>
>> I had tried this but used the chassis ground and pin 6
>> thinking that would work, but it does not have any effect. Pin 4 on the 
>> 830
>> is to the NO contact of the control relay, so I dont think this will 
>> work.
>>
>> Has anyone used the ALC on their 830 to limit input to their linear?
>>
>>
>>
>> Steve
>> KA2PTE
>>
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