Michael,
One possibility is a bad relay or a relay mounted backwards or a relay
with a poorly soldered connection.
You cannot reliably check the inductor relays without removing one lead
of the inductors. Do that first.
Then in menu ATU CLP you should have continuity through all the inductor
relays.
L0 is the state where no inductors are selected, similarly, C0 is the
state where no capacitors are selected.
I can draw no conclusions from the relative power output between 40 and
20 meters. You will have to lift one lead of all the inductors and see
if there is end to end (input to output) conductivity. You should be
able to do that with a DC ohmmeter. If you do not have end to end
continuity, you can check each of the relays that short out the
inductors to see which is the problematic one.
73,
Don W3FPR
On 2/27/2016 9:53 PM, Michael via Elecraft wrote:
Still have not figured out what's wrong with my newly built K1 w/ ATU.
For some reason everything is fine on the 40 M band but once I switch to 20
M the power output
drops way down. On the low part of the band the power output is much higher
but still too low.
I went thru all the C and L parameters in the ATU menu and checked the TX
output power and SWR.
Here is what I found:
http://n2zdb.com/K1problem20M.jpg
Since there are 4 inductors and 5 capacitors what does L0 and C0 represent?
Figuring there was a problem with an inductor - I added a short between all
the inductors at the relays (pins 3 to 4). This did not make a difference.
However when a wire was added to K1 pin 4 to k4 pin 3 the power did come
up a couple of Watts.
I need an EXPERT to figure this out...does anyone have any ideas?
73's Michael
n2zdb
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