Bill
I think Mike K0AZ that is on this board might comment on that, he has to me
anyway. He does have a Collins line in his shack that he has compared to the
K3 as well as his Drake's.
Fred/N0AZZ
-Original Message-
From: elecraft-boun...@mailman.qth.net
Although I appreciate the usual FB inputs to the forum, this issue was
singularly spectacular. The discussion on surge protection, for an
appliance operator (my skill set is airplanes), was very instructional
and educational.
The brilliance of PigKnob by N3WG and follow on suggestions opened
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These were very popular in Kenya where black-outs, drop-outs, brown-outs,
high surges
and spikes were common:
http://www.sollatek.com/product-list/voltshield/
http://www.sollatek.com/product-list/voltsafe/
Many fridges, freezers and all household equipment is saved using the
plug-in units. It
Does anyone know the approximate warm-up/stabilize time of the KTCXO3-1?
Thanks,ChadN0YK
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Help:
So this morning I started rechecking everything. I've found that the 5V on
U4 pin 5 is intermittent. Not in a way that would indicate a loose or poor
connection, but either that it is there, or it isn't (mostly isn't) when
powering up the unit. U7 always has the 5V on pin2. I checked the
Fred,
Most likely the battery temperature got up to 45 degrees C and charging
was suspended until they cooled to 40 C. Normally a message should
appearwhen that happens.
73,
Rich AC7MA
On 02/01/2013 12:02 PM, Fred Carvalho wrote:
Hi Folks. Sorry if this has been asked/explained before.
Jeremy,
U7 pin 2 and U4 pin 5 are both the SDO signal which comes from the
microprocessor over on the control board.
If you have 300k resistance between those two points there is a break
between them.
I don't know why you mention U7 pin 5 (unless it was a typo) because
that pin is connected
A guess is 10-15 minutes. I call it a guess because the KX3's TCXO is
either similar or identical to the K3's, and the setup for temperature
compensating the KX3's OSC requires 10-15 minutes of run time before
the procedure is started.
Even without the temp compensation, KX3 #6 was stable to +/-
Greetings,
I find that 3 hours in 70F room is required to reach stabilized frequency.
Jim, N8OQ
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Post:
Looking over the board I did find that I had U8 C45 connected to pin7 instead
of pin6. That has been corrected.
U6 pin 24 to U4 pin5 is less than 1 ohm, however U6 pin24 to U7 pin2 is 300k
ohm. I don't see any damage on the board.
I also noticed going back to the beginning for the resistance
Jeremy,
Do I recall correctly that you had a good PLL range? If so, I have
trouble believing there would be 300k resistance from CB U6 pin 24 to RF
U7 pin 2 while you have zero ohms to U4 pin 5. Are you certain you
counted the pins correctly? Pin 1 has a circular solder pad and the
rest
Date: Sun, 3 Feb 2013 08:45:36 -0600
From: Chad Wasinger chadwasin...@outlook.com
To: elecraft@mailman.qth.net elecraft@mailman.qth.net
Subject: [Elecraft] KTCXO3-1 TCXO
Message-ID: bay002-w97bd9bbec8db9494e84bf3c0...@phx.gbl
Content-Type: text/plain; charset=iso-8859-1
Does anyone know the
Since nobody has answered yet, I will give it a shot, although it is
entirely subjective and not even based on recent observations. I am
commenting only about receive audio, and only ssb. I have a KWM-2, and had
the same question on my mind years ago. Here is what I recall. When I got
the KWM-2 I
Rechecked the resistance, and indeed there is 300k from U6 pin 24 to U7 pin2.
Looking at the schematic in the manual, it shows U6 pin24 connected to U7
pin5 and U8 pin11. At this point I do have less than 1 ohm.
The schematic shows U6 pin23 connected to U7 pin2 which is reading less than
1 ohm.
Jeremy,
I am sorry, I had the wrong IC, RF board U5 pin 2 should be connected
to Control Board U6 pin 24. Yes, it also connects to Control Board U7
pin 5 and Control Board U8 pin 11, as well as RF board U4 pin 5.
73,
Don W3FPR
On 2/3/2013 3:45 PM, JeremyJones wrote:
Rechecked the
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Elecraft has donated a complete K-Line as a grand prize for the upcoming
Visalia DX Convention.
http://www.dxconvention.com
Of additional interest:
The 2013 Visalia Top Band Dinner will be held on April 19, 2013. There will be
a buffet dinner, door prizes including a Hi-Z Antennas Hi-Z 4
No problem Don, you've been a huge help.
So I went back to the beginning and did all resistance checks in the manual
up to this point and everything is good.
PLL range test @ 7100.00khz gives me 12099.13 high and 12086.33 low.
VCO @ 4000.10 gives me 7840.33
I do still have some bad voltages
Finally got to make up an LED tester for both the Band0-3 and Digout1.
Everything looks fine. No problems selecting two antennas on all bands
160-6M. I have the built in 2M transverter. On 2M I get , the same as
on 60M. But 2M selects Ant3. So I don't think there will be any problems.
Next
So I really thing that U4 is faulty. It's putting out 5.029V on pin13 when
that should only be 4V. All the components surrounding it seem to have the
correct voltages according to the manual. I think I'll replace that and see
how things look after.
--
View this message in context:
I have a rig that has many similarities to the Collins KWM-2. The
KW2000b made by KW Electronics in Great Britain is often compared to the
Collins as it shares many similarities in design.It too has a
mechanical filter and very similar audio amp. Is the best sounding
SSB rig I have
Jeremy,
5.029 volts at U4 pin 13 means that the PLL synthesizer IC is working.
Remember that the manual voltages are for a properly working K2 that has
the PLL IC in lock with the VFO frequency. Your voltage only indicates
an out of lock condition.
What is the R30 voltage now with that
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