I have retested and the output as shown on the k2 tracks more closely
with the watt meter. On 40m with the k2 showing 10 watts, I am seeing
2.6 amps.
When I push it to the maximum, it shows between 14 and 16 watts
depending on the band.
I have set cal cur to 3.25amps. When I crank it to full output, after
abt 10 seconds I see the mpu reset (drops out of xmit and the elecraft
name appears in the lcd). Is this a sign of trouble or some safety
logic to keep it out of 'full carrier' mode for long?
I have aligned all the bands per the procedure and it acted normally
(peaking a decent amount based on the can/capacitor.
73 Neal
On Feb 13, 2005, at 9:07 PM, Neal Campbell and Sarah Ferrell wrote:
The good news is that I did a diode dance, had the rf probe diode in
D9, had the real d9 substituted for a 4148 and a 4148 in the rf probe.
Will swap them around and redo the tests!
Neal
On Feb 13, 2005, at 6:00 PM, Vic Rosenthal wrote:
Neal Campbell and Sarah Ferrell wrote:
The symptom of my problem is:
1. when setting k2 power to 5 watts, I get a reading of 2.2 amps
with abt 0.8v drop
2. when looking at power output with an external wattmeter, 5 watts
reflecting on the external wattmeter shows as 3.8 on the k2.
Similarly, 10 watts on external wattmeter is reading 6.9 on the k2
at an 2.8 amps. Cranking the rf power all the way clockwise shows 15
watts on k2 and hi pwr message (cal curr set to 3.25) and external
wattmeter shows 19 watts.
The RF detector seems to be reading low. Check the RF detector
components on the RF board: R66, R67, R68, R69, D9. Make sure the
resistors are the correct values and the diode is the correct type.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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