[Elecraft] K2-no power output

Gary Marks gmarks at neo.rr.com
Sat Sep 2 13:16:19 EDT 2006


Don,
    I can't find any problems with the KAT2 cables. I removed the KAT2 from 
the rig by disconnecting the coax at P6 and the 10-pin connector. Using the 
BNC connector marked ANTENNA, I've connected my dummy load.I set the power 
level at 5 watts and pressed TUNE and only see an output of 0.2 watts.
I've read the prep for signal tracing and am not exactly sure about the 
jumpers at J9 & J10. I'm guessing the two jumpers go from pin 1 to pin 3 ? 
Correct ?  Also, I no longer have C167 (.001 or "102") and would have to get 
one next week. I do have a .001 "disc" cap available. Would that work ?
Gary

> Gary,
>
> This problem has nothing to do directly with the installation of the 
> KDSP2.
> Think of whatever else you may have accidently touched - the KAT2 cables 
> are
> a relevant example.
>
> Remove the KAT2 and feed the K2 directly into a 50 ohm dummy load - when 
> you
> press TUNE you should see the output power displayed (and it will be
> accurate if you have a good 50 ohm dummy load).  That will tell you if the
> K2 is capable of producing the required power output.
>
> If you do see the proper power output with the ATU disconnected, look for
> the problem with the ATU.  Check your K2 to KAT2 coaxial cable carefully 
> to
> be certain the pins are properly seated and the wires for the coax are not
> broken at either end - sometimes they will break with a bit of flexing if
> they are not properly soldered.
>
> If you get no output with the ATU disconnected, then prepare yourself for
> the Transmit Signal Tracing that is detailed in the Troubleshooting 
> section
> of the manual.  You will need the RF Probe assembled (or an oscilloscope
> with a 10X probe) for that testing.
>
> 73,
> Don W3FPR
>
>
>> -----Original Message-----
>>
>> I just finished installing the KDPS2 boards and they check out
>> OK. I also have the KAT2 installed and it "was" working.
>>
>>     I was going to operate today for the first time but when
>> pressing TUNE, I'm not getting any power out. I have an external
>> watt meter too. When I press TUNE, I see Atu on the right side of
>> the LCD then it quickly flashes to 1.0-1 on the left side , then
>> displays Lo  P. I've changed bands and frequency's up & down but
>> do not here the relays in the antenna tuner "clicking" as before.
>> I went through the various relays through the MENU and I can here
>> each individual relay "click" just as I did when first testing
>> the KAT2 option. Nothing on CW or SSB. I switched to ANT2 which
>> is my Elecraft Dummy Load with the same thing happening so it
>> isn't a problem with the antenna.
>>
>> The KAT2 manual says that when this happens to increase the power
>> which I did in steps up to 15 watts with no change. ????????  Am
>> I missing a setting or does the KDSP2 board have something to do
>> with this. I believe I installed the top cover correctly and have
>> all the wires connected after installing the DSP boards.
>>
>> Any suggestions ?
>>
>> THANKS.........Gary  WD8ICX
>>
> 



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