Fern, I am using the IF output AOK from my K3/KXV3. I am using it
with a Clifton Labs isolation Z10000U buffer/preamp with very low
gain into a Softrock40 With a LO of 8191 kHz with WU2X's version of
PowerSDR as the panadaptor display, offset by 24 kHz (8215-8191).
This with a Delta-44 sound card sampling at 96 kHz.
I would estimate that, with a 50 uV signal into the K3, the KXV3 is
putting out something in the 20-50 uV range. Using my test oscillator
at 1 uV output into the K3, I see an obvious peak on the panadaptor,
so the sensitivity is OK. I haven't calibrated PowerSDR levels yet,
but it is already near the correct S9 level on the display for 50 uV
from my test oscillator into the K3.
Connect up another receiver to the KXV3's IF output and see if you
don't hear sigs repeated on it when you tune it near 8.215 MHz. If
the K3 is hearing sigs, you should hear sigs on that second rx near
whatever freq the K3 is tuned to, and their levels will be similar to
what the K3 is hearing. This will tell you if your K3/KXV3 is working OK.
Keep working on it - the PowerSDR panadaptor is the best I have ever
used in 35 years of using panadaptors.
Jerry W4UK
At 12:08 AM 7/31/2008, Fern Rivard wrote:
Good evening Lyle:
I honestly don't know where you're getting those levels from as
I already reported to you back in April/08 that the levels at the I
F output were pretty well non existent. There is just no tracking
of levels at the I F out with what is fed into the antenna input of
the receiver. I even used a 15 db amplifier from Jack Smith of
Clifton Laboratories without any luck as there is simply no levels
to play with there. I believe that Jack Smith also queried you
about that without getting a proper reply as yet from you. I
realize that nobody is perfect but why are we dogging a proper
reply and/or fix for that?
Fern with K3 #412
----- Original Message -----
From: "Lyle Johnson" <[EMAIL PROTECTED]>
To: "Don Ehrlich" <[EMAIL PROTECTED]>
Cc: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Wednesday, July 30, 2008 9:18 PM
Subject: Re: [Elecraft] K3 KXV3 IF Output Level?
> The 2nd antenna input works as expected but my oscilloscope shows no
> signal (<5 mV) coming from the IF Output on the KXV3. What IF signal
> level should I be seeing?
It will be about the same level as at the antenna, or perhaps less,
depending on settings of PRE, ATT, etc.
73,
Lyle KK7P
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
