Joe,
There have been a few changes over the course of this part of the
firmware development. I do not know the date of that particular PSK
Operating Tip on the Elecraft website.
I would tend to believe the latest information from Lyle since he is
designing that part, but Wayne's answers should be definitive too. If
he is reading the reflector this weekend, we may get a good answer from him.
In general, the Rev D manual contains up-to-date information.
73,
Don W3FPR
Joe Planisky wrote:
Now I don't know what to believe. In Lyle's April 6 post, he says:
We recommend setting the Mic (or LINE IN) Gain so you get 5 bars of ALC,
with possibly the 6th bar occasionally flickering...
Yet, on the "K3 Operating Tips" page of the Elecraft web site, in the
section about "Setting up your K3 for PSK" it says:
Use the MIC control to set the drive level so that your output is
equal or just below what you dialed in ... You should not see any ALC
bars on the K3 display (when set to CMP/ALC).
Rev D1 of the operating manual seems to agree with Lyle in that it says:
You can use the same procedure outlined for voice modes (pg. 28)
except that speech compression should not be used. [Pg. 28]: adjust
MIC for a peak ALC meter indication of about 5-7 bars.
If the operating tip on the web site is wrong, it ought to be
corrected or removed.
73
--
Joe KB8AP
On Oct 4, 2008, at 1:54 PM, Don Wilhelm wrote:
Richard and all,
If you look back to Lyle Johnson's reflector posting of April 6, you
will find the following: (plus other good information about setting
up data modes.
"In this case, the ALC meter display is acting as a "VU Meter" and is
being used to help you set the Tx audio path gain correctly. It is
not showing you how much you are over-driving the PA. This is why
you can set it up in Tx test mode, when you are not transmitting any
RF at all. "
Additional information can be found in Rev D of the K3 user's manual
on page 32.
73,
Don W3FPR
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