[Elecraft] K3 hardware AGC experiment shows promise

Eric Swartz - WA6HHQ, Elecraft eric at elecraft.com
Mon Dec 5 16:13:53 EST 2011


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: elecraft-bounces at mailman.qth.net [mailto:elecraft-
>> bounces at mailman.qth.net] 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
>>
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