Re: K3 hardware AGC experiment shows promise

Posted by Eric Swartz - WA6HHQ on Dec 05, 2011; 9:13pm
URL: http://elecraft.85.s1.nabble.com/Fw-CQ-WW-DX-Contest-CW-2011-Unofficial-claimed-scores-tp7060148p7064560.html

No. We don't have a large stock at the factory, as we keep them at our
contract manufacturing site south of here.

I'll post here when we get some in here.

73, Eric

www.elecraft.com


On 12/5/2011 11:50 AM, Cady, Fred wrote:

> Should we call ordering to have a cap or two sent out?
>
> Fred Cady
> fcady at ieee dot org
>
>> -----Original Message-----
>> From: [hidden email] [mailto:elecraft-
>> [hidden email]] On Behalf Of Wayne Burdick
>> Sent: Sunday, December 04, 2011 6:59 PM
>> To: Elecraft Reflector
>> Subject: Re: [Elecraft] K3 hardware AGC experiment shows promise
>>
>> By the way, we'll be happy to send out these surface-mount 1 uF
>> capacitors (or whatever we determine is the best value) to anyone who
>> would like to try the experimental mod, immediately and at no charge.
>>
>> These are huge as SMD parts go. Anyone with a fine-tip iron would have
>> no trouble putting one in. There's no need to take the original,
>> smaller one off; you can just stack the new one on top.
>>
>> If you're in a hurry, you could use any type of capacitor that will
>> fit, including an electrolytic. Just be sure to put the (-) end at
>> ground if you use a polarized capacitor.
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>> On Dec 4, 2011, at 5:50 PM, Wayne Burdick wrote:
>>
>>
>>> The K3's hardware AGC time constant is a compromise between recovery
>>> time and IMD due to modulation of the loop. C238, on the bottom of
>> the
>>> RF board near the front, sets this time constant.
>>>
>>> We did a little experiment today
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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