[Elecraft] K2 40m bandpass

[Matt Osborn]

>(lost all my hearing in SE Asia and SSB is way 
>more than a challenge)

Thank you for your service.  Were you in artillery also?

My next challenge is to master CW and upgrade to general so I can use
both halves of the K2.  I too, bought the K2 for the receiver, very
impressive unit.

I'll see if I can get things done by October.


On Sat, 18 Jun 2005 19:01:36 -0700, Fred Jensen <k6dgw at foothill.net>
wrote:

> >(and no, I'm not talking to your Dad)
>
>Matt, I left for college 2 days before my 17th birthday, and when they 
>called me "Mister Jensen," as I was registering, I was sure they had 
>confused me with my Dad.  I've built the K2 and then the KX1, in that 
>order, and I'm now upgrading my K2 to SSB and 100W as a Plan B for CQP 
>from Alpine County CA.  Won't bore you with the details unless you ask.
>
>Don and Ron are the real Elecraft gurus (well besides Wayne), but there 
>are a few in EU too.  Actually, the problems posted on the list are 
>probably the most valuable  the other comments.  None of us build from 
>scratch anymore (I started in 1953 at 13), but I'm about to ditch my 
>TS-850 for the enhanced K2 solely because of the receiver.
>
>Hope this all goes well for you.  Look for us in the CQP (1st weekend in 
>Oct) from N6A -- Alpine County CA, pop 1,600 with no one licensed.  I'll 
>be one of the CW ops, (lost all my hearing in SE Asia and SSB is way 
>more than a challenge).  We'll be at 9,000' at Monitor Pass handing out Q's.
>
>73,
>
>Fred K6DGW
>Auburn CA CM98lw
>
>Matt Osborn wrote:
>> Thank you, Sir, for your advice. (and no, I'm not talking to your Dad)
>> 
>> I subscribed to this list about a month before I ordered my K2 just to
>> see what experiences other folks have had.  I was impressed by the
>> quality of the posts, the willingness of others to help and most of
>> all, the few problems reported.
>> 
>> Given the sophistication of Elecraft kits, I'm amazed at how smoothly
>> everything went.
>> 
>> On Sat, 18 Jun 2005 21:11:13 -0400, "W3FPR - Don Wilhelm"
>> <w3fpr at earthlink.net> wrote:
>> 
>> 
>>>Matt,
>>>
>>>That is not unusual using TUNE, it can be off by a couple watts.  Try it
>>>with the hand key setting for the keyer, you should find the output much
>>>closer to the requested power that that indicated by using TUNE.  If you
>>>still have difficulty, you may want to check the RF Output detector
>>>components (D9 and R66 thru R69) carefully.  Be certain you have the correct
>>>1N5711 diode installed at D9 and that all those components are properly
>>>soldered - other than that, there is no cause for concern.
>>>
>>>The current draw will depend on your power supply voltage and the options
>>>that you have installed. The base K2 manual lists only the approximate
>>>current draw with no options installed and something close to a 13.8 volt
>>>power supply.  The K2 attempts to maintain the requested power output no
>>>matter what the voltage supply may be, so a lower voltage supply will result
>>>in a higher current draw.
>>>
>>>Bottom line is that your current draw does not look out of line for the
>>>actual power you are developing.
>>>
>>>73,
>>>Don W3FPR
>>>
>>>
>>>>-----Original Message-----
>>>>
>>>>With power set to 5 watts:
>>>>Power output is 6.9 watts; current at 1.8 amps
>>>>(Voltage on DL1 dummy load is 16.9v)
>>>>
>>>>With power set to 10 watts:
>>>>Power output is 12.2 watts; current at 2.35 amps;
>>>>(Voltage on DL1 dummy load is 12.8v)
>>>>
>>>>The voltage measurements on the DL1 agree with the built in watt
>>>>meter, so I think the K2 is actually putting out the power indicated.
>>>>
>>>>Should I worry about this?
>>>>
>> 
>> 
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>> 
>