[Elecraft] k2 no transmit power

Mon Feb 2 10:54:08 2004

Hi

The emitter of Q7 and Q8 are grounded so you should have 0 volts there. =
The other voltages sound about right. The most likely problem is a =
poorly stripped toroid lead on T2 or T1. I have also had a bad Q24 cause =
this problem. If you have a scope you can trace through the transmitter =
starting at the transmit mixer then to jumper W6 to Q5 to Q6 and to the =
finals. You should see a generally increasing signal as you go from =
point to point. If you do not have a scope you can use the RF probe to =
trace the signal. If you find a great loss of signal look around that =
circuit for wrong or missing parts, bad solder connections or solder =
bridges. A good going over of the area with a magnifying glass will =
sometimes find the problem.

Don Brown
KD5NDB
  ----- Original Message -----=20
  From: David Schornak<mailto:[email protected]>=20
  To: Elecraft<mailto:[email protected]>=20
  Sent: Monday, February 02, 2004 9:02 AM
  Subject: [Elecraft] k2 no transmit power

  my k2 seems to be dead on transmit but the receive is okay how can I
  determine if it is the finals or some thing else? I have hooked my k2 =
up to
  a watt meter with a dummy load and when I key down the watt meter does =
not
  move at .1 watts power level. I can hear a carrier on my ts2000 on the =
same
  frequency as the k2 when I key down with the same watt meter and dummy =
load
  hooked up
  on transmit q7 and q8 base voltage is .640 the collector voltage is =
13.13
  but there is no voltage on the emitter. so what else can I check =
before I
  order new parts to fix my k2?
  I also need to figure out what parts I need to order for the k2.

  see ya

  73's
  N1IB
  David Schornak

  K2 03027

  arf
  don't forget me
  Mis Ginger

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