[Kenwood] ALC with Kenwood TS-830S

[k3ac at aol.com]

Steve, Check with Pasternak Electronics. They sell a wide range of RF attenuators (50 ohms) of various power ratings that should reduce the PO to the level you require without interfering with the ALC. Here's their website: https://www.pasternack.com/50-ohm-fixed-attenuators-category.aspx 73,Bob k3AC In a message dated 3/29/2021 3:51:20 PM Eastern Standard Time, rick.nk7i at gmail.com writes: 
I'll state what should be obvious... make SURE the attenuator pad in the 
transmit path, switched out while receiving (DOH!).  There likely is/was 
a pad already in place within the amp (unless modified for non-ham 
use).  Perhaps it is bypassed?

In the interim, grossly under driving audio would have similar effects, 
but for CW you'll need a pad.  Unless the rig has a drive level control 
(I haven't played with an 830) for power out control.

Yes, the attenuator would stop the oops factor.

73,
Rick NK7I

On 3/29/2021 12:07 PM, Steve H wrote:
> 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
>>>
>>> ______________________________________________________________
>>> Kenwood mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/kenwood
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Kenwood at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>> ______________________________________________________________
>> Kenwood mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/kenwood
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Kenwood at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html 
>
> ______________________________________________________________
> Kenwood mailing list
> Home: http://mailman.qth.net/mailman/listinfo/kenwood
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Kenwood at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
Kenwood mailing list
Home: http://mailman.qth.net/mailman/listinfo/kenwood
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Kenwood at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html