[Elecraft] Re: Which Capacitor is it?

[W3FPR - Don Wilhelm]

Ted and all,

It is C72 - originally a 0.01uF located at the gate of Q6.  Should you doubt 
it, I can supply the confirming e-mail 'from the horse's mouth' when I first 
asked that same question.

I do not yet know if this is a recommended change or if it is only to be 
applied when the 'click on un-mute' problem rears its ugly head - you will 
have to query Wayne, Eric, and Gary (and possibly Lyle) on that point.

73,
Don W3FPR

----- Original Message ----- 
>
> My K2 will be in the post soon.  Meanwhile I have been avidly reading in 
> readiness for the build.  One mention of this mod refers to C72, many 
> others like Stan & Jim refer to C71.  Checking the schematic for the 
> KPA100, C71 is listed as  0.0018uf  decoupling RFC3 to ground and C72 
> 0.01uF decouples the gate of Q6 if I read it right.  Can someone please 
> check this out before I need to get a solder sucker out!!
>
> 73 to all, thanks for the excellent reflector and those at Elecraft for 
> the excellent manuals.  Looking forward to joining you with the build and 
> on the air.
>
> Ted Turk G7BQM
>
> On 29 Jan 2005, at 00:25, Stan Rife wrote:
>
>> Hhmmm. This is the second time today that I have seen the C71 reference 
>> on
>> the KPA100 board. I am in the process of building my KPA100. Do I need to
>> replace this cap now before I go any further? I don't have a DSP unit, 
>> but
>> will be adding it later. I would rather do the mod now than have to take 
>> it
>> apart and do it later. What do ya'll think?
>>
>> Stan Rife
>> W5EWA
>> Houston, TX
>> K2 S/N 4216
>>
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bob Evans
>> Sent: Friday, January 28, 2005 12:33 PM
>> To: elecraft at mailman.qth.net
>> Subject: [Elecraft] Re: Which Mods are applicable?
>>
>> Jim,
>>
>> I have just finished K2 #4687 with KPA100, DSP, 160M, SSB and NB.  My kit
>> came with all required mods already in the parts package.  All I needed 
>> to
>> do was to update the construction manual with written notes found on the
>> included Errata sheets.  Elecraft included one Mod bag of parts for 
>> either
>> the DSP or KPA100 (I don't remember which one)  which I THOUGHT needed to 
>> be
>> installed, but after realizing I was replacing a capacitor with the exact
>> same capacitor (I'm slow sometimes), I realized the corrected parts were
>> already incorporated into the regular parts inventory.  The only part I 
>> had
>> to replace which can be called a mod, was C71 in the KPA100.  As luck (or
>> incredible planning on Elecraft's part) would have it, the .1uF capacitor
>> needed for C71 was a spare left over from one of the other accessories.
>>
>> My point is:  I wouldn't worry about those "optional" mods until you get 
>> the
>> rig together.  Elecraft has done a great job of getting an up-to-date kit 
>> in
>> your hands so that you don't have to worry.
>>
>> Have fun!
>>
>> Bob K5WA
>>
>> *************************
>>
>> <How does one determine which should/need be purchased?
>>
>> <If needed why are they not included with the
>>
>> <appropriate kit? It appears I could spend a hundred
>>
>> <dollars or more on modifications to make a new radio
>>
>> <work. That could wreck my radio budget.
>>
>> <Thanks for the help,
>>
>> <Jim, AB0UK
>>
>>
>>
>>
>>
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>
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