[Elecraft] Fw: K2 Problem 30/20

[W3FPR - Don Wilhelm]

Glenn,

Since you obtain a signal when touching the points in the bandpass filter
AND that the K2 works on other bands, I predict that you will find the
problem in the Low Pass Filter.  Either a Poorly Tinned Toroid Lead (PTTL)
or the points of relay K9 are not behaving properly.  Select either 20 or 30
meters then turn power off and measure the resistance between jumper W1 and
the antenna jack - if it is not close to zero ohms, you have confirmed that
the low pass filter is at fault.

73,
Don W3FPR

> -----Original Message-----
> > K2 # 4869 fully functional except 30/20 meters.
> > An external signal generator on these bands will
> > allow trimmers C21 and C23 to be peaked. A
> > strong external signal is barely heard.
> > Items that have been checked:
> > #1 L18 , L19 , L20 rechecked for proper amount
> > of turns and solder joints Ok.
> > #2 All capacitors in the LP area are the correct part
> > and solder joints Ok.
> > #3 All capacitors in the band pass filter are the correct
> > parts and no solder joints.
> > #4 Relays K4 and K9 oriented correctly.
>
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.5 - Release Date: 5/4/2005