[Elecraft] K2 - Setting AGC Threshold Voltage

Fri Feb 28 11:28:01 2003

Hi

This problem seems to come up from time to time. The AGC threshold voltage
is determined by the voltage divider made up of RP6 and R1. If the +8 volt
regulator is a little on the low side of its tolerance then you will not be
able to reach 3.9 volts. 3.84 is probably close enough, but if you want to
set it to 3.9 then bridge a resistor (51K-100K) across RP6 pins 3 and 4.
Then adjust R1 for 3.9 volts

Don Brown
KD5NDB

----- Original Message -----
From: "Leonard, David" <[email protected]>
To: <[email protected]>
Sent: Friday, February 28, 2003 9:21 AM
Subject: [Elecraft] K2 - Setting AGC Threshold Voltage

> Hi last night I was going over my RF board Tests before moving on to the
> next step(s).
>
> I was unable to get the proper 3.9 volt reading called for in step 5 on
page
> 46 of the manual.
>
> The maximum  voltage I could get was 3.84 using my external DMM (a Radio
> Shack DMM .. I sure wish I had my Fluke down here 8-(
>
> My Question:
>
> Is this a cause for concern? (I don't think so, but again I want to solve
> problems before I build in more problems for later troubleshooting)
>
> What should the maximum voltage be at that point?
>
> Everything else was correct or "D.O.B.A" (to quote Ms Marisa Tomei 8-)
>
> Tnx DE Dave WB9SOG
>
>
>
>
> *********************************************************************
> This message and any attachments are solely for the intended recipient. If
you are not the intended recipient, disclosure, copying, use or distribution
of the information included in this message is prohibited -- Please
immediately and permanently delete.
>
>
>
> --- StripMime Report -- processed MIME parts ---
> multipart/alternative
>   text/plain (text body -- kept)
>   text/html
> The reason this message is shown is because the post was in HTML
> or had an attachment.  Attachments are not allowed.  To learn how
> to post in Plain-Text go to: http://www.expita.com/nomime.html  ---
> _______________________________________________
> Elecraft mailing list: [email protected]
> You must be a list member to post to the list.
> Postings must be plain text (no HTML or attachments).
> See: http://mailman.qth.net/mailman/listinfo/elecraft
> Elecraft Web Page: http://www.elecraft.com
>