Loaded up the beta firmware today. The PTT (key line) was dead after
that. Reloading 1.64 and all was functional again.
What am I overlooking?
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
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Don,
It seems you are having trouble with both the PLL Reference Oscillator
and the BFO (TP2 should be near 4915kHz).
The VFO TP1 is apparently oscillating if you have a frequency of
4918.88, but that frequency is not correct.
Tackle the PLL Reference first.
OK, the PLL Reference Oscillator
Don,
All three test points are not zeros. TP1 reads a solid 4918.88, TP2 reads
between flickering 267 & 289, TP3 reads all zeros.
The resistance from the source of Q19 to ground is 280 ohms.
I did make an interesting discovery when I took voltages again. U4, pin 5
(SDO) is 0 volts, pin 7
I sent Doug an email about my P3 that is available
P3, P3SVGA and TXMON (2000W) for $800
Jim - W4RKS
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Don,
While in CAL FCTR, try the probe in TP3 and TP1 and TP2. If you have a
zero reading in all 3 places, you most likely have a bad probe.
Yes you might have a PLL problem, but that is not certain yet. One quick
check is to measure the resistance from the source of Q19 to ground. If
it is
73 Alan
> On 27 Sep 2018, at 18:43, elecraft-requ...@mailman.qth.net wrote:
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Don,
Thank you for the excellent advice! I went to the bottom of the board and
checked the resistance between the ends of RFC16. It was infinite, so I rewound
RFC16 and ensured the leads were cleaned good. After reinstalling, I now have
4.~ votes at U6 pin 5, and 8.~ at pin 8. Pin 8 of the
Hi, I would like to buy a used P3 panadaptor. Does anyone know of one for sale?
VGA board would be a plus. Please reply privately to drzarko...@yahoo.com.
Thanks, Doug K6JEY
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Don,
You apparently have a problem with the thermistor board - or the 8 volts
to it.
A "voltage rail" are those PC traces that carry voltage to various parts
of the circuit.
In the K2, there is one for 12 volts, another for 8 volts and another
for 5 volts.
On the schematic they are labeled
Don,
Board U6 pin 5
Thank you for the suggestions! The DC voltage at RF Board U6 pin 5 is 0 volts.
In fact, all pins of U6, except pin 6, are 0 volts. Pin 6 is less than 1 volt.
I saw a bridge between C96 and RFC10, the schematic shows these two components
connecting together, so that should be
As I recall, most of the K-pod field testers thought the reduced CTS was
beneficial given the placement of the knob.
Of course, they were most all CW contesters who wanted a slower tuning rate.
73,
Don W3FPR
On 9/27/2018 10:07 AM, Art via Elecraft wrote:
When the K-Pod first came out, it
Don,
First check the DC voltage at RF Board U6 pin 5 - it should be 4 volts
(or 1/2 the 8 volt regulator output voltage). If it is not correct, you
have a problem with the thermistor board - most likely a solder bridge.
You should have 8 volts at the thermistor board pin 8. If that is not
Hi all,
When the K-Pod first came out, it was mentioned that the CTS of the K-Pod was
1/2 of the VFO. That is still the case. Case in point: Set VFO CTS to 200.
K-Pod CTS is only 100.
Could the developers PLEASE write the code to allow the K-Pod to operate at the
same CTS as the VFO?
It
I tuned into my inv-V with 8 Watt on 3.63 Mhz and
connected a 1 meter wire as antenna on my HP frequency counter.
The counter displayed 3.2177 Mhz ! An offset of approximately .412 Mhz
Still no idea. Waiting on k3support@elecraft...
Twan - pa0kv
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