Don:
I rechecked that Pad E is connected to the proper point. Prior to
installing the LPF board, I made the checks on page 11 of the 3080 meter
module and saw 5 vdc on Pad F as stated in the last step of Box 1. I see
from my notes that at this point I did record 47 ma in step 3 on page 11 vs.
the suggested 34-37 ma.
I have lifted the wire from the bottom of the KX1 board that runs from Pad F
and then to the + side of C9 to try and replicate what I was reading before
the installation of the LPF board.
Here are the readings:
3.533 Mhz, Pad E = 6.3 mv, Pad F = 0.7 VDC, Pad D = 4.83 VDC
7.039 Mhz, Pad E = 5.01 VDC, Pad F = 0.2 mv, Pad D = 0.2 mv
6.710 MHz, Pad E = 5.01 VDC, Pad F = 0.2 mv, Pad D = 4.83 VDC
10.120 MHz, Pad E = 5.01 VDC, Pad F = 0.2 mv, Pad D = 4.9 VDC
14.100 MHz, Pad E = 5.01 VDC, Pad F = 0.2 mv, Pad D = 0.2 mv
All above readings on Pad 5 = 5 VDC
I'm considering removing the LPF board and going back to where I was after
initial installation of the 3080 board, when I was getting the 5 VDC on Pad
F on 80 meters... not sure what that will tell me, but it would be doing
something hi hi.
Thanks, Steve
----- Original Message -----
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "Steve Watkins" <[EMAIL PROTECTED]>
Cc: <elecraft@mailman.qth.net>
Sent: Monday, May 21, 2007 8:40 PM
Subject: Re: [Elecraft] KX1 3080 Module High Current & Now No power Out
Steve,
Yes, when everything is working properly, you will have 5 volts on pad F
when on 80 meters. What is the voltage on pad E when you are on 80
meters? Make certain that you have pad E connected to the proper point
(see KXB3080 manual figure 7). Pad E is the control, pad F is the output.
73,
Don W3FPR
Steve Watkins wrote:
Things have been going down hill this last weekend.
Started with a bit higher current than manual stated on 80 meters (65 ma)
to read about 105 ma.
Then I noted that I could not get any power out either.
Rig was working fine with just the 20 and 40 meter module with currents
and power out.
I rechecked the voltages on page 11 of the KXB 3080 manual, and note now
that on 80 meters, I no longer get 5 vdc on Pad F?. I am now suspecting
some problems on the 3080 module.
I have checked numerous times for the obvious, especially those cautioned
about in the errata.
Maybe I haven't troubleshot this correctly, but it seems I should be
seeing 5 vdc on Pad F through Q1 on 80 meters.
Kind of floundering now and could use some bright mind input.
Thanks, Steve
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