[Elecraft] K1 # 2034 4-Band Receiver Alignment Problem

2005-07-11 Thread George Kimbriel 
I hope someone can help me.

I have been trying for some time to perform the alignment and test, Part 1 
(Page 36-39) for the receiver.

The difficulty seems to be U1 and U2.  I have determined the voltages with and 
without T1 and T2 installed, they are as follows:

With T1 and T2 installed the voltages are:

U1U2

Pin 10.550
Pin 20.550
Pin 300
Pin 46.086.08
Pin 56.086.08
Pin 66.036.03
Pin 75.385.38
Pin 86.086.08


With T1 and T2 Removed the voltages are

U1U2

Pin 10.550
Pin 20.550
Pin 300
Pin 46.086.08
Pin 56.086.08
Pin 66.036.03
Pin 75.385.38
Pin 86.086.08

I have checked the toriods 3 times.  Verified the PCB traces.  Also, when I 
touch pin 4 of U2 I received a very strong AM station in the area.

Thanks for any assistance.

George Kimbriel
K5GNI
K2  3448
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[Elecraft] K2/100 Simultaneously sticks on a dit and displays Hi Current on LCD, also Receiver stuck in FL1

2004-09-04 Thread George Kimbriel 
I hope you guys can help me with this one

So far this has occured only on 40 meters around 7.061

While calling CQ the following has occured twice:

1.  Both times, the rig simultaneously sticks on a dit, I'm using the internal 
keyer, and displays "Hi Current" on the LCD.  This occur very briefly, less 
than a one half second in duration.
 I have tried to verify high current drain but is is so quick, by the time 
I look at the amp meter on the MFJ-4225MV power supply the needle is going down.

2.  During the second occurance, which was last night, everything happended as 
above, however, and this really bothers me, the receiver is stuck on "FL1".  I 
do have the DSP installed.

3.  Both times I was running around 80 watts

4.  I have no other problems with the rig.

Rig configuration:

a.  K2 with KPA100, have been operating with the KPA100 for about one month 
without problems.

b.  KAT100, which I have been using for around a week with out difficulty.

c.  Have all of the options for the K2 installed.

d.  Have a Low Pass Bencher filter between the KPA100 and the KAT100, localized 
TVI with my SONY TV which is on cable, solved the problem

e.  WM1 Computer Meter - SWR meter and Power Meter

Last night I attached  dummy load and attempted to replicate the condition at 
various power level without success.

Any clues as to what might be wrong.

AND MOST OF ALL HOW DO I GET IT OFF OF "FL1".

Thanks in advance,

George Kimbriel
K5GNI

K2 #3448


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