[Elecraft] K2 is dead.

While listening the K2 just cut off. When I try to turn it on, the lcd flashes on and immediately back off, as if, the MCU was shutting it off. The power supply voltage is fine and there are no external fuses blown. Where should I look first? Mac

[Elecraft] Dead K2/100

What should the resistances between poles of Q7 Q8 be? Mac __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted

[Elecraft] K2/100 Transmit Problems

I have had my KPA100 installed and working properly before. I had to remove it to work on transmit power problems in the base K2. All of the problems in the base K2 were solved. It will now transmit at 2, 5, or 10 watts on all bands. When I connect it to the KPA100, I get .1 watt 1-0 no matter

[Elecraft] K2 Transmit Alignment

I had trouble aligning on all bands with the KPA. So, I rewound T5 and found D21 broken and replaced it. Now, the power is erratic. I once had the 2 watts set on 7100 hz and now it won't go above 0.1 watts. Is there a way to reset the K2 power output? I've gone clear back to the beginning and

[Elecraft] KAT100

I just completed my KAT100. The lights on the front light up and the relays click, but, the K2 does not recognize that the ATU is connected. I have checked all solder joints with a magnifying glass and performed all the steps under troubleshooting in the manual. Also, I have a new Astron RS35M

[Elecraft] KAF2 Sold!

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[Elecraft] KAF2 Built Tested

For sale.yeah, I bought it AND the DSP.and it's built and tested and worked great. $65 mailed to the continental US. Email me off list @ [EMAIL PROTECTED] Ron, KE5QDA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a

[Elecraft] K2/100 #6575 Up an' runnin'

I am happy to report that my K2/100 #6575 is up an' runnin'. Now, I'm waiting for my tuner to arrive! 73, Ron KE5QDA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr.

[Elecraft] K2-100 Alignment Installation problems

Page 46 of the manual where I turn on the K2, I DO NOT see NO PA PS as called for in the manual. When I tap display my voltage has dropped to 11.3 volts. Measured at the source it is still 13.5. Measuring the voltage at Junction of C77 R11 I get 74.1 volts which is not in the range

[Elecraft] K2 Transmitter Tests

Attached is a spreadsheet of the results of my transmitter tests @7100hz. I would appreciate any help deciphering where to look for the problem. Ron, KE5QDA K2 6575 under construction ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You

[Elecraft] K2 Transmitter Problems

Don, I tested the transformers T3 T4 at their solder pads for continuity and they were all about 0.1 ohms and I checked them through the full set of windings that are connected and got 0.2 ohms. I also checked the number of turns, etc. and found nothing wrong. On the LPF sections I was

[Elecraft] K2 Transmitter Alignment problems

I've done all the construction up to the transmitter alignment on the base K2. I do not have a signal generator that puts out 0.14 volts. Bought the N-Gen and it doesn't provide a strong enough signal for signal tracing. So, how do I find my problems cure? Transmit on 40 meters, 30 meters

[Elecraft] K2-Transmit problems

At first I had no transmit. I found the problem in T2 where the winding wire had not made a good connection. Now, I have 17.4 watts power no matter what I do. The V-Power signal from U8 Pin 2 on the Control Board is 0.00 in Tune. Changing the Power setting has no effect on the Power readout.

[Elecraft] K2 Troubleshooting

My reason for troubleshooting is there is NO SOUND. I can hear the sidetone when I turn it on. I cannot hear the 7000hz tone. 1. My reference oscillator output is 0.511.a little low. 2. VCO output is okay. 3. BFO output is okay. 4. Mixer, I.F. amplifier, Crystal filter = 0.00

[Elecraft] K2 [DISPLAY] Button

I'm building a K2. The [DISPLAY] button shows a voltage of less than 2 volts and it is erratic and, the current is shown as 0.00. I have checked the voltages at U3 and they are 2.633 at pin 5, 6, 7, and 13.75 at pins 2 3. Pin 1 is .571. I measured the voltage at Vsense on the MCU pin 5 and

[Elecraft] K2 - Toroids

I just wound my first toroid for the K2. It is supposed to be RFC14, 18microhenries, 10 turns. I measured the inductance with my LC Meter IIB and it measures 31 microhenries. Is this okay? Should I remove turns until it is correct??? Ron ___