el U1 are not
> well soldered.
>
> 73,
> Don W3FPR
>
> On 2/7/2021 1:18 PM, Mark Yergin wrote:
> > My K2 (S/N 7867) which I built has always had an intermittent problem
> with
> > the bottom horizontal row of LCD elements. Often they are missing until
> I
> &
My K2 (S/N 7867) which I built has always had an intermittent problem with
the bottom horizontal row of LCD elements. Often they are missing until I
slap the top of the radio. Then they will come back on for a while. I'd
like a more permanent solution. Looking for some ideas as to where to
focu
Carlos - There are lots of these 103 caps in the kit. From a size
perspective (lead spacing in particular) they are not all exactly the
same. Try different ones and see if you can find one that fits better and
all the way flush with the board. When I built my K2 I was able to find
one that sat f
I’m proud to report that K2 #7867 is on the air! Just completed my first
QSO with Albert, K3AAR, on 40M CW running 5W into an EFHW. Al responded to
my second CQ. I started building in February of 2019, took most of the
summer and fall off, then finished it up over the last few weeks.
Thanks to
installed correctly,
> especially the shoulder washers.
>
> 73,
> Don W3FPR
>
> On 1/4/2020 9:11 PM, Mark Yergin wrote:
> > I'm in the final stages of my K2 build, but having a problem with Q7 and
> Q8
> > shorting to ground. When I did my Resistance Checks on pg
I'm in the final stages of my K2 build, but having a problem with Q7 and Q8
shorting to ground. When I did my Resistance Checks on pg 74, I had 3.66K
ohms to ground at the Q7 collector. So that was fine. But when I put all
the boards and panels on, then attached Q7 and Q8 to the heat sink, I see
I have made a $0 deposit for a K4 after the first groups. I will want the
tuner. Will the tuner be available as an add on when my place in line
arrives or would it be best to place a deposit now? I assume if I decide
to pass on the K4 my deposit would be refunded?
Mark. W8EWH
_
You should be
> using a 10x 'scope probe which has a low capacity and will not load the
> PLL Reference circuit.
>
> 73,
> Don W3FPR
>
> On 4/21/2019 1:07 PM, Mark Yergin wrote:
> > BNC with mini test clips. I can switch in 10x (or 1x) on the FC but
> > that does
gt;
> 73,
> Don W3FPR
>
> On 4/21/2019 1:43 PM, Mark Yergin wrote:
> > I'm getting 0.02 V at R30, not 6V. Turns on T5 correct and wound per
> > image. Reflowed the four solder joints and verified continuity between 1
> > and 2, 3 and 4. C72 is correct value (label
I'm getting 0.02 V at R30, not 6V. Turns on T5 correct and wound per
image. Reflowed the four solder joints and verified continuity between 1
and 2, 3 and 4. C72 is correct value (label 271) and reflowed. L30 is the
correct value (large slot), and reflowed. D21-26 confirmed as correct
values.
should be using a 10x probe like you would use on an oscilloscope to
> keep the loading of the circuit by the probe capacity to a minimum.
>
> 73,
> Don W3FPR
>
> On 4/21/2019 11:30 AM, Mark Yergin wrote:
> > I found that when both my external FC probe and the probe provided b
I found that when both my external FC probe and the probe provided by the
kit were attached to TP3 the K2 frequency reading was lowered significantly
(~12070 from about 12098) vs when measured separately. C22 could not make
a match. Separately the two measurements were fairly close, and I could
u
pr 21, 2019 at 8:54 AM Mark Yergin wrote:
> I'm on the Page 62 Resistance Check and R115 / 12V IIN check should be
> >500 ohms and I'm getting 132 ohms. All other checks in the table are fine.
>
> Before I move on to Alignment and Test Part 2, I want to get some feedback
>
I'm on the Page 62 Resistance Check and R115 / 12V IIN check should be >500
ohms and I'm getting 132 ohms. All other checks in the table are fine.
Before I move on to Alignment and Test Part 2, I want to get some feedback
on this discrepancy. Move on? Or what does this indicate I should be
check
I am building a K2 and on the RF board there is diode D10. It's listed as
95SQ015. I cannot find this diode in the RF bags. I do find SR1503 which
has the large black body that I'm to be looking for. D12 I found.
Do I use SR1503 or am I missing D10?
Mark W8EWH
__
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