Re: [Elecraft] K3 problem solved.!!!

[Keith Trinity WE6R]

Don't forget to power-cycle the radio after changing to "PA nor".
(any option that is installed and recognized at power-on must have a 
power cycle when you change it's install status).

Keith WE6R K3/K4 Tech

Apparently the 100 Watt PA has been disabled. Go to "Config" (Press 
and hold MENU), rotate VFO B until you see "KPA3", then rotate VFO A 
to select "PA nor."

Jim - WS6X

I can see only 12W.!
Josep EA6BF


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Re: [Elecraft] K3 problem solved.!!!

[Keith Trinity WE6R]

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Re: [Elecraft] K3 problem solved.!!!

[ws6x.ars]

Josep,
Apparently the 100 Watt PA has been disabled. Go to "Config" (Press and hold 
MENU), rotate VFO B until you see "KPA3", then rotate VFO A to select "PA   
nor."
Remember, it is always a good idea to back up your K3 configuration. Use the K3 
Utility to do a Config Backup. If you ever have a problem, you can always 
restore the K3 from that configuration file.
Buena suerte!
Jim - WS6X

-Original Message-
From: elecraft-boun...@mailman.qth.net On Behalf Of Josep via Elecraft
Sent: Monday, April 04, 2022 6:09 AM
To: elecraft@mailman.qth.net; cw...@groups.io; foc_memb...@googlegroups.com
Subject: [Elecraft] K3 problem solved.!!!

Howdy guys, good new here.!!!
just to let y´all know that I have finally solved the problem in my K3..!!!
A Ham friend has given me a old cable Serial-USB and it has worked.!! The K3 is 
now running again.! Very happy here so I don´t need to send it to Italy.!
Theres one thing I don´t understand and it is related with the PWR, I can see 
only 12W.! Why it´s not sending 100W like the first days I used it.? I does not 
go over 12W (?), Can that be due to high SWR.? The tuner has matched the 
antenna but...(?) Not 100W out by now, any tips.?
Thank you so much for all your help.!


73,
JosepEA6BFMyWebsiteBUG #256  -  CWOps #3072  -  FOC #2182 (ex 1724) 
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Re: [Elecraft] K3 problem solved.!!!

[G]

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[Elecraft] K3 problem solved.!!!

[Josep via Elecraft]

Howdy guys, good new here.!!!
just to let y´all know that I have finally solved the problem in my K3..!!!
A Ham friend has given me a old cable Serial-USB and it has worked.!! The K3 is 
now running again.! Very happy here so I don´t need to send it to Italy.!
Theres one thing I don´t understand and it is related with the PWR, I can see 
only 12W.! Why it´s not sending 100W like the first days I used it.? I does not 
go over 12W (?), Can that be due to high SWR.? The tuner has matched the 
antenna but...(?) Not 100W out by now, any tips.?
Thank you so much for all your help.!


73, 
JosepEA6BFMyWebsiteBUG #256  -  CWOps #3072  -  FOC #2182 (ex 1724)
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Re: [Elecraft] K3 Problem, VFO Noise While Rotating On 10 Meters

[Randy via Elecraft]

Hi Paul Thanks for the reply. I have the upgraded SYN-3A synthesizer and the 
rig came from the factory with the resistor and diode mod installed.  The clock 
rate is set to SP2. I should have mentioned that info in the original post. 73 
Randy In a message dated 5/19/2021 7:02:19 AM Pacific Standard Time, 
pokir...@gmail.com writes: 
Based on the description of your rig, you have the original synthesizer(s).  
The noise mod involved adding some resistors and diodes to the K3 main board at 
specific spots and making some firmware adjustments. On the assumption that you 
have the resistors and diodes already, per your description of your K3 vintage, 
here are the firmware comments from the mod instructions: 
**IMPORTANT: You must install the resistors and diodes 
as described above before changing the busclock rate. Failure to do so will 
result in erratic behavior of your K3.1. Download and install firmware revision 
3.24 or later. Refer to the K3 software page for instructions.2. IMPORTANT: 
Locate the CONFIG:VCO MD menu entry, and tap the 1 keypad switch until yousee 
SPI 2; this selects the new bus clock rate. (The default setting is SPI 
1.)* I will email you the mod instructions separately 
so that you can see where the resistors and diodes should be (although Elecraft 
may have relocated them in later production).  Then you can proceed with the 
CONFIG setting. 73, Paul W8TM  [Elecraft] K3 Problem, VFO Noise While Rotating 
On 10 MetersRandy w9zr at aol.comWed May 19 06:46:18 EDT 2021 When I tune the 
VFO knob on 10 meters I hear a scratching type noise.  This problem only occurs 
on 10.There was an Elecraft mod that addressed this issue for early serial 
number K3's but my K3 is a later  unit with the mod built in at the factory 
during production. Can anyone shed some light on this issue?  I assume that 
this is not normal operation. 73 Randy 
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[Elecraft] K3 Problem, VFO Noise While Rotating On 10 Meters

[Paul Kirley]

Based on the description of your rig, you have the original synthesizer(s).  
The noise mod involved adding some resistors and diodes to the K3 main board at 
specific spots and making some firmware adjustments.

On the assumption that you have the resistors and diodes already, per your 
description of your K3 vintage, here are the firmware comments from the mod 
instructions:

**
IMPORTANT: You must install the resistors and diodes as described above before 
changing the bus
clock rate. Failure to do so will result in erratic behavior of your K3.
1. Download and install firmware revision 3.24 or later. Refer to the K3 
software page for instructions.
2. IMPORTANT: Locate the CONFIG:VCO MD menu entry, and tap the 1 keypad switch 
until you
see SPI 2; this selects the new bus clock rate. (The default setting is SPI 1.)
*

I will email you the mod instructions separately so that you can see where the 
resistors and diodes should be (although Elecraft may have relocated them in 
later production).  Then you can proceed with the CONFIG setting.

73, Paul W8TM


[Elecraft] K3 Problem, VFO Noise While Rotating On 10 Meters
Randy w9zr at aol.com
Wed May 19 06:46:18 EDT 2021

When I tune the VFO knob on 10 meters I hear a scratching type noise.  This 
problem only occurs on 10.
There was an Elecraft mod that addressed this issue for early serial number 
K3's but my K3 is a later  unit with the mod built in at the factory during 
production. Can anyone shed some light on this issue?  I assume that this is 
not normal operation. 73 Randy

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[Elecraft] K3 Problem, VFO Noise While Rotating On 10 Meters

[Randy via Elecraft]

When I tune the VFO knob on 10 meters I hear a scratching type noise.  This 
problem only occurs on 10.

There was an Elecraft mod that addressed this issue for early serial number 
K3's but my K3 is a later  unit with the mod built in at the factory during 
production. Can anyone shed some light on this issue?  I assume that this is 
not normal operation. 73 Randy
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Re: [Elecraft] Elecraft K3 Problem

[Per-Tore Aasestrand]

Hello group,

The K3 problem was quickly solved by Leo Duursma, PA0LMD.
An RF choke (RFC30) was open.
Thus, the diodes D25 did not get the required switching voltage.

Thanks to all that helped with evaluating the problem.

73,

Per-Tore
DL/LA7NO
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Re: [Elecraft] Elecraft K3 Problem

[Mike K8CN]

Hi Per-Tore,

Can you identify which transistor (or other device) on the LPA module is
getting hot in transmit mode?

The drain terminals of MOSFET PA transistors Q4 and Q5 receive +12V
regardless of TX or RX mode, but the gate bias voltages are applied only in
TX mode.  Unless there's a problem with the bias regulator circuit (U1), the
RF amplifier chain on the LPA module should not be getting that warm. It is
also possible that one of the RF power transistors may be getting hot
because it is no longer making good thermal contact with the bottom cover
panel - it would be good to check the tightness of the three screws holding
those transistors against the bottom panel.

Is it possible for you to carefully extract the LPA module from the main RF
board? That requires removal of the rear panel of the bottom cover, and you
may need new thermal pads for the RF transistors if those pads are damaged
by removal of the cover panel.   If you can remove the LPA module, you might
try RX mode ONLY with the Power control set to 0 (to ensure that the KPA3 PA
is bypassed by its relay K1) and see if your receive sensitivity is
restored.  

The output side of the LPA module is nominally connected only in TX mode to
the antenna path via diode D1 on the LPA module, and if the D1 switch is
operating properly one would not expect the high attenuation of signals in
RX mode.  The output of the LPA module is also connected to the input of the
100 W PA module at the same point on the T/R switch circuit, but that module
is bypassed by relay K1 on the KPAIO3 board.

I'm not yet sure how the overheating of a device on the LPA board is
connected to the loss of RX sensitivity.  If the diode switch D1 on the LPA
module has failed shorted (unlikely), then it would leave the output
circuitry of the LPA module bridged across the antenna signal path in RX
mode.

Keep us posted on what you learn!

73,
Mike, K8CN





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Re: [Elecraft] Elecraft K3 Problem

[Per-Tore Aasestrand]

Measured voltages over the PIN-diodes D26 & D27.
In Rx: 0,72 VDC. over both.
In Tx, the voltages varied a bit around 0,4-0,6 VDC.

While in TX, even with power set to 0,0W, one of the transistors in the LPA
is getting quite hot.
Cools down when switching over to Rx.

P-T


On Fri, 14 Aug 2020 at 17:59, Per-Tore Aasestrand  wrote:

> Hi,
>
> Still working on finding a solution to the below problem.
>
> Elecraft support said:
>
> "Since you are hearing signals, on frequency is presumed, only attenuated
> ~30 dB,
> The SYNTH circuit is not the first place I would look."
>
> Any suggestion wrt where to look first?
> I guess it must be somewhere on the RF Board.
>
> Where can I find the PCB layouts with components id's?
>
> 73,
>
> Per-Tore
> LA7NO
>
> ---
>
> The K3 suddenly stopped working.
> One day all OK, the next day serious problems.
>
> Serial no.: 07818.
> It has ATU and 100 W PA installed, and also a P3 connected.
> Both K3 and P3 were earlier well calibrated.
> Supply: 14,5 VDC.
>
> Symptoms:
> - Rx seriously reduced sensitivity, only strong signals to be heard.
> - No Tx output. Tuning not successful, no SWR indicated (only the 3
> hyphens).
> - Same on all bands.
> - All displays, controls and menus apparently working normal.
> - Mic-gain & ALC normal indication on SSB.
>
> All menu settings seem to be OK.
>
> Connected an XG3 and injected a -73 dBm signal.
> It showed up on all bands with signal level about -100 dBm, so around 30 dB
> attenuation.
>
> Connected a LP-100A and a 50 ohm dummy load.
> Whatever we tried, the LP-100A indicated zero power out on all bands.
> Same on both Ant1 and Ant2.
> Bypassed the ATU: no change.
> Set power to < 10 W, effectively bypassing the PA: no change.
>
> It is clearly something that is common for both Rx and Tx.
> It is independent of the selected band.
> Apparently not related to ATU or PA.
>
> So, it could be some relay problem, or related to the SWR bridge or
> LP-filters.
>
> Hope you can give some helpful ideas on how to proceed.
>
>
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[Elecraft] Elecraft K3 Problem

[Per-Tore Aasestrand]

 Hi,

Still working on finding a solution to the below problem.

Elecraft support said:

"Since you are hearing signals, on frequency is presumed, only attenuated
~30 dB,
The SYNTH circuit is not the first place I would look."

Any suggestion wrt where to look first?
I guess it must be somewhere on the RF Board.

Where can I find the PCB layouts with components id's?

73,

Per-Tore
LA7NO

---

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.
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Re: [Elecraft] Elecraft K3 problem

[LA7NO]

Hi,

Checked all TMP connectors - no change.

P-T




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[Don Wilhelm]

That is why just looking for loose TMP connectors may not be sufficient.
While you are inside the K3, give all the TMP connectors a slight twist 
which should clear some of the corrosion.


73,
Don W3FPR

On 7/27/2020 6:25 PM, Wes wrote:
I've had TMP connectors badly corroded in my K3. See: 
https://groups.io/g/Elecraft-K3/album?id=37256


Wes  N7WS


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Re: [Elecraft] Elecraft K3 problem

[Wes]

I've had TMP connectors badly corroded in my K3. See: 
https://groups.io/g/Elecraft-K3/album?id=37256


Wes  N7WS

On 7/27/2020 12:04 PM, Mike K8CN wrote:

Aye, Wes, indeed you did!  I wasn't thinking of LO drive levels when I first
read your post, but was thinking of common signal paths for TX and RX
through the T/R switch and no deeper into the signal processing chain.
Let's hope your and Martin's suggestion proves to be the true cause of
Per-Tore's issue.

Thanks, and 73,
Mike, K8CN


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Re: [Elecraft] Elecraft K3 problem

[Mike K8CN]

Aye, Wes, indeed you did!  I wasn't thinking of LO drive levels when I first
read your post, but was thinking of common signal paths for TX and RX
through the T/R switch and no deeper into the signal processing chain. 
Let's hope your and Martin's suggestion proves to be the true cause of
Per-Tore's issue.

Thanks, and 73,
Mike, K8CN



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Re: [Elecraft] Elecraft K3 problem

[Wes]

I thought I said that.

On 7/27/2020 10:34 AM, Mike K8CN wrote:

I agree with Martin's simpler hypothesis. The sudden change of behavior in
both TX and RX modes could well result from insufficient LO drive to either
the 1st or 2nd mixers.  Check that possibility before launching into
detailed testing of the PIN diode T/R switch.  It may be as simple as a
loose or corroded TMP connector.

Mike, K8CN



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Re: [Elecraft] Elecraft K3 problem

[Mike K8CN]

I agree with Martin's simpler hypothesis. The sudden change of behavior in
both TX and RX modes could well result from insufficient LO drive to either
the 1st or 2nd mixers.  Check that possibility before launching into
detailed testing of the PIN diode T/R switch.  It may be as simple as a
loose or corroded TMP connector.

Mike, K8CN



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Re: [Elecraft] Elecraft K3 problem

[Mike K8CN]

Hi Per-Tore,

I don't know if there's an easy way to check the PIN diodes in the T/R
switch, especially since the SMD components of the switch are mostly on the
underside of the RF board.  Here's where I would start:

1) Find spots on the RF board (top side) where you can measure the control
voltages 7R and 7T.  Verify that these change in opposition to each other,
i.e. if 7R is high, 7T should be low and vice-versa, when changing from RX
mode to TX mode and back.

2) Presuming that both voltages 7R and 7T behave properly in switching from
RX to TX mode and back, I would measure the voltage on the drain of Q7, the
MOSFET switch, when 7R is high.  Assertion of 7R should pull the Q7 drain
voltage low, which causes sufficient current to pass through both PIN diodes
D26 and D27 to enable the RX signal to pass through, presuming there is not
a problem with PIN diode D25.

3) It is possible that the Q7 drain voltage could be pulled low if only one
of PIN diodes D26 or D27 functions properly and the other has failed open,
so test (2) is not conclusive.

4) If you have a scope with a 10X probe, I would check for presence of RF on
the anode of PIN diode D43 when in TX mode - any frequency on the VFO within
the scope bandwidth should suffice.  D43 must be forward-biased by the 7T
voltage in order for RF drive to be coupled to the low power (10 Watt) PA
assembly (Z2 on the block diagram).  The fact that you have not been able to
detect any transmitted power in TX mode whether the 100 watt PA is bypassed
or not may indicate that the low power PA is not receiving drive from the
mixer.  The 7T voltage is supplied to the anode of D43 via the low power PA
input connector, but it's unlikely that the simple path internal to the low
power PA board is at fault, i.e. 7T is not reaching D43.

I haven't had my K3 opened up for many years, nor have I experienced the
problem you described, so I can't easily point out where to access the
circuit points mentioned above.

There is another set of PIN diode switches around the mixer, but I would
start with those closest to the low power PA before going further back up
the signal processing chain.

73,
Mike, K8CN



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Re: [Elecraft] Elecraft K3 problem

[Martin Sole]

Apologies, I just saw the serial number  7818, quite a bit newer so 
maybe not a failed capacitor, yet :)


Martin, H0ZED


On 27/7/63 23:32, Martin Sole wrote:

Hi,

What Serial number?

I have found on my own and a friends K3, both very low S/N around 300, 
that the KREF3 board has been the culprit for this exact problem.
First check the all the TMP cables to and from the KREF3 board and the 
synths. If all look good you should examine the K3REF board.


In both cases I have found 100nF (0.1uF) capacitors on this board to 
be essentially a low DC resistance. Look in particular at the 5 volt 
line. This supply affect IC6 the divide by 6 which provides both the 
second LO for the receivers and one input to the mixer for the TXIF1. 
Measure the resistance to ground from either side of L1 and L2 to 
figure out which capacitor is likely the cause of the problem.


Please keep the list posted on what you find.

Martin, HS0ZED



On 27/7/63 19:50, LA7NO wrote:

Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[Martin Sole]

Hi,

What Serial number?

I have found on my own and a friends K3, both very low S/N around 300, 
that the KREF3 board has been the culprit for this exact problem.
First check the all the TMP cables to and from the KREF3 board and the 
synths. If all look good you should examine the K3REF board.


In both cases I have found 100nF (0.1uF) capacitors on this board to be 
essentially a low DC resistance. Look in particular at the 5 volt line. 
This supply affect IC6 the divide by 6 which provides both the second LO 
for the receivers and one input to the mixer for the TXIF1. Measure the 
resistance to ground from either side of L1 and L2 to figure out which 
capacitor is likely the cause of the problem.


Please keep the list posted on what you find.

Martin, HS0ZED



On 27/7/63 19:50, LA7NO wrote:

Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[LA7NO]

Thanks, Mike.

I guess this is the MA4P PIN diodes D26 & D27.
Is there an easy way to check those?

P-T




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[Mike K8CN]

You might check the PIN diode T/R switch.  The high attenuation in RX mode
and no output power even when the 100 W PA is bypassed suggest that one or
more of the PIN diodes in the T/R switch have failed "open."

Mike, K8CN



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Re: [Elecraft] Elecraft K3 problem

[LA7NO]

Yes, all bands are the same.
Received signals are normal in all respects, except signal strength.

P-T




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[George]

All Bands?
If receiving a strong station, is it on frequency?

73
George  AI4VZ

-Original Message- 
From: LA7NO 
Sent: Monday, July 27, 2020 8:50 AM 
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Elecraft K3 problem 


Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[LA7NO]

Yes, as I said, same problem on both Ant1 & Ant2.




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[LA7NO]

Would not that make the rx dead?
I can hear strong signals.
But the tx is giving no output.




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[John Simmons]

Did you check the antenna selection?


--
73,
-John NI0K
https://www.qrz.com/db/NI0K
LA7NO wrote on 7/27/2020 7:50 AM:

Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] Elecraft K3 problem

[Wes]

May be a LO problem.  Check all of the TMP cables.

Wes  N7WS



On 7/27/2020 5:50 AM, LA7NO wrote:

Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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[Elecraft] Elecraft K3 problem

[LA7NO]

Hello,

The K3 suddenly stopped working.
One day all OK, the next day serious problems.

Serial no.: 07818.
It has ATU and 100 W PA installed, and also a P3 connected.
Both K3 and P3 were earlier well calibrated.
Supply: 14,5 VDC.

Symptoms:
- Rx seriously reduced sensitivity, only strong signals to be heard.
- No Tx output. Tuning not successful, no SWR indicated (only the 3
hyphens).
- Same on all bands.
- All displays, controls and menus apparently working normal.
- Mic-gain & ALC normal indication on SSB.

All menu settings seem to be OK.

Connected an XG3 and injected a -73 dBm signal.
It showed up on all bands with signal level about -100 dBm, so around 30 dB
attenuation.

Connected a LP-100A and a 50 ohm dummy load.
Whatever we tried, the LP-100A indicated zero power out on all bands.
Same on both Ant1 and Ant2.
Bypassed the ATU: no change.
Set power to < 10 W, effectively bypassing the PA: no change.

It is clearly something that is common for both Rx and Tx.
It is independent of the selected band.
Apparently not related to ATU or PA.

So, it could be some relay problem, or related to the SWR bridge or
LP-filters.

Hope you can give some helpful ideas on how to proceed.

Best regards & 73 from Norway,

Per-Tore / LA7NO




-
73,

Per-Tore / LA7NO

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Re: [Elecraft] K3 problem "ERR DLL"

[ab2tc]

Hi,

Are you sure that message wasn't "ERR PLL"? Do you have the older synth? It
has a PLL (phase locked loop) in it so that error message might make sense.

AB2TC - Knut


Ryszard Tymkiewicz wrote
> Bill..the message was on K3 screen and not any PC was connected...
> 
>     73 Rys
> 
> W dniu 2020-01-05 o 00:37, Nr4c pisze:
>> ZDLL error sounds more like a Windows thing then a radio error.
>>
>> Sent from my iPhone
>> ...nr4c. bill
>>
> 
> __





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Re: [Elecraft] K3 problem "ERR DLL"

[Ryszard Tymkiewicz]

Bill..the message was on K3 screen and not any PC was connected...

   73 Rys

W dniu 2020-01-05 o 00:37, Nr4c pisze:

ZDLL error sounds more like a Windows thing then a radio error.

Sent from my iPhone
...nr4c. bill



On Jan 4, 2020, at 2:04 PM, Ryszard Tymkiewicz  wrote:

I have been using K3 for MANY years and the first time I got a message "ERROR 
DLL" ..there was a high noise level and I was not able to tune to stations. It was 
in my second QTH..when I got back home seems everything is OK. I don't know if it is a 
problem with contacts? If so which ones I should clean?
  73 Rys
 SP5EWY
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Re: [Elecraft] K3 problem "ERR DLL"

[Don Wilhelm]

Rys,

The first thing to try are the steps indicated in the K3 manual listing 
of errors.


If those do not help, and this is an older K3, try removing the front 
panel assembly (the KDVR3 manual page 7 has good instructions for doing 
that).  If the pins on the front panel connector are tin plated, they 
should be replaced with the gold pins (Elecraft has a kit).  In any 
case, removing the front panel assembly and simply replacing it will 
wipe oxidation from the pins and can restore proper operation.


73,
Don W3FPR

On 1/4/2020 2:02 PM, Ryszard Tymkiewicz wrote:
I have been using K3 for MANY years and the first time I got a message 
"ERROR DLL" ..there was a high noise level and I was not able to tune to 
stations. It was in my second QTH..when I got back home seems everything 
is OK. I don't know if it is a problem with contacts? If so which ones I 
should clean?

                                  73 Rys
     SP5EWY

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Re: [Elecraft] K3 problem "ERR DLL"

[Nr4c]

ZDLL error sounds more like a Windows thing then a radio error. 

Sent from my iPhone
...nr4c. bill


> On Jan 4, 2020, at 2:04 PM, Ryszard Tymkiewicz  wrote:
> 
> I have been using K3 for MANY years and the first time I got a message 
> "ERROR DLL" ..there was a high noise level and I was not able to tune to 
> stations. It was in my second QTH..when I got back home seems everything is 
> OK. I don't know if it is a problem with contacts? If so which ones I should 
> clean?
>  73 Rys
> SP5EWY
> __
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[Elecraft] K3 problem "ERR DLL"

[Ryszard Tymkiewicz]

I have been using K3 for MANY years and the first time I got a message 
"ERROR DLL" ..there was a high noise level and I was not able to tune to 
stations. It was in my second QTH..when I got back home seems everything 
is OK. I don't know if it is a problem with contacts? If so which ones I 
should clean?

                                 73 Rys
    SP5EWY
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Re: [Elecraft] K3 problem

[Clark Macaulay]

And, if you don't buy one of the new cartons/inserts, you'll get one when
they ship it back to you!

On Sat, Oct 26, 2019 at 12:47 PM Grant Youngman 
wrote:

> And if you don’t have a good condition original shipping container for the
> K3/S (or P3), it’s worth the small cost and wait to order a new one with
> the internal foam supports from Elecraft.  The shipping containers are
> available on the spare parts menu.
>
> Grant NQ5T
>
> > On Oct 26, 2019, at 12:36 PM, George Thornton <
> gthorn...@thorntonmostullaw.com> wrote:
> >
> > I want to echo my appreciation of Elecraft repair service.
> >
> > I had my K3 in a few years ago after it malfunctioned during field use.
> >
> > They also went through it and made all sorts of additions and
> calibrations.
> >
> > Really well worth the moderate cost and inconvenience.
> >
> > The unit continues to perform flawlessly.
> >
>
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> Message delivered to clark.macau...@gmail.com



-- 
73,

Clark, WU4B
QRPARCI #10815
SKCC #3892
NAQCC #5055
CWOPS #1869
Collins Collectors #AC90-12432
Southeastern DX Club 
North Georgia QRP Club 


*"It is vain to do with more what can be done with less."*
*Attributed to *William of Occam (1288 AD - 1348 AD)
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Re: [Elecraft] K3 problem

[Grant Youngman]

And if you don’t have a good condition original shipping container for the K3/S 
(or P3), it’s worth the small cost and wait to order a new one with the 
internal foam supports from Elecraft.  The shipping containers are available on 
the spare parts menu.

Grant NQ5T

> On Oct 26, 2019, at 12:36 PM, George Thornton 
>  wrote:
> 
> I want to echo my appreciation of Elecraft repair service.
> 
> I had my K3 in a few years ago after it malfunctioned during field use.
> 
> They also went through it and made all sorts of additions and calibrations.
> 
> Really well worth the moderate cost and inconvenience.
> 
> The unit continues to perform flawlessly.
> 

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Re: [Elecraft] K3 problem

[George Thornton]

I want to echo my appreciation of Elecraft repair service.

I had my K3 in a few years ago after it malfunctioned during field use.

They also went through it and made all sorts of additions and calibrations.

Really well worth the moderate cost and inconvenience.

The unit continues to perform flawlessly.

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Clark Macaulay
Sent: Saturday, October 26, 2019 8:03 AM
To: Jim Leder 
Cc: Elecraft 
Subject: Re: [Elecraft] K3 problem

Jim,

In my view, that is a very wise decision.  I'm 77 yrs of age ("seasoned
citizen") with shaky hands.  After observing just how small the SMD components 
are when trying to install the K-pod mod for powering via its data cable,  I 
realized my 6 year old K3 with an annoying problem (PWR control mushy) needed 
to be sent home (aka The SPA).

What I hadn't expected was that they would also bring the radio up to the 
latest specs by installing gold pins, installing the latest firmware (which I 
thought I had done), repairing a LPA problem I didn't know I had, and 
performing all of the calibrations (my POWER reading was significantly off, 
they said).  Yes, it was a little expensive ($400), but well worth it, and my 
K3 will now serve me well for many years to come.  You will not be disappointed.

On Sat, Oct 26, 2019 at 9:35 AM Jim Leder  wrote:

> This is a follow up on the VFO B control problem with a friend’s older K3.
>
> Thanks to all the ideas and suggestions! I do agree that it is likely 
> the infamous K3 connector problem. As I mentioned, the K3 is an older 
> unit. The ham who it belongs to is 78 with bad eyes, and shaky hands. 
> I’m 74 with bad eyes and shaky hands. Neither of us feels qualified to 
> tear into it for what hopefully is the main issue. It could still be a bad 
> encoder.
> Since he needs a few other things done with the unit, he made the 
> decision to send it back to Elecraft and have qualified techs perform the 
> repair.
> Painful and costly but necessary.
> When we did the hard reset, we hoped it would solve the B control problem.
> Well, it didn’t. Now we can’t even scroll through the CONFIG menus to 
> put everything back as he had it.
>
> Doesn’t matter. It needs to go home.
>
> Thanks again for the valued suggestions!!
>
> 73 …
>
> Jim Leder … K8CXM
>
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> list: http://www.qsl.net/donate.html Message delivered to 
> clark.macau...@gmail.com
>


--
73,

Clark, WU4B
QRPARCI #10815
SKCC #3892
NAQCC #5055
CWOPS #1869
Collins Collectors #AC90-12432
Southeastern DX Club <http://www.sedxc.org> North Georgia QRP Club 
<http://www.nogaqrp.org>


*"It is vain to do with more what can be done with less."* *Attributed to 
*William of Occam (1288 AD - 1348 AD) 
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Re: [Elecraft] K3 problem

[Clark Macaulay]

Jim,

In my view, that is a very wise decision.  I'm 77 yrs of age ("seasoned
citizen") with shaky hands.  After observing just how small the SMD
components are when trying to install the K-pod mod for powering via its
data cable,  I realized my 6 year old K3 with an annoying problem (PWR
control mushy) needed to be sent home (aka The SPA).

What I hadn't expected was that they would also bring the radio up to the
latest specs by installing gold pins, installing the latest firmware (which
I thought I had done), repairing a LPA problem I didn't know I had, and
performing all of the calibrations (my POWER reading was significantly off,
they said).  Yes, it was a little expensive ($400), but well worth it, and
my K3 will now serve me well for many years to come.  You will not be
disappointed.

On Sat, Oct 26, 2019 at 9:35 AM Jim Leder  wrote:

> This is a follow up on the VFO B control problem with a friend’s older K3.
>
> Thanks to all the ideas and suggestions! I do agree that it is likely the
> infamous K3 connector problem. As I mentioned, the K3 is an older unit. The
> ham who it belongs to is 78 with bad eyes, and shaky hands. I’m 74 with bad
> eyes and shaky hands. Neither of us feels qualified to tear into it for
> what hopefully is the main issue. It could still be a bad encoder.
> Since he needs a few other things done with the unit, he made the decision
> to send it back to Elecraft and have qualified techs perform the repair.
> Painful and costly but necessary.
> When we did the hard reset, we hoped it would solve the B control problem.
> Well, it didn’t. Now we can’t even scroll through the CONFIG menus to put
> everything back as he had it.
>
> Doesn’t matter. It needs to go home.
>
> Thanks again for the valued suggestions!!
>
> 73 …
>
> Jim Leder … K8CXM
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to clark.macau...@gmail.com
>


-- 
73,

Clark, WU4B
QRPARCI #10815
SKCC #3892
NAQCC #5055
CWOPS #1869
Collins Collectors #AC90-12432
Southeastern DX Club 
North Georgia QRP Club 


*"It is vain to do with more what can be done with less."*
*Attributed to *William of Occam (1288 AD - 1348 AD)
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[Elecraft] K3 problem

[Jim Leder]

This is a follow up on the VFO B control problem with a friend’s older K3.

Thanks to all the ideas and suggestions! I do agree that it is likely the 
infamous K3 connector problem. As I mentioned, the K3 is an older unit. The ham 
who it belongs to is 78 with bad eyes, and shaky hands. I’m 74 with bad eyes 
and shaky hands. Neither of us feels qualified to tear into it for what 
hopefully is the main issue. It could still be a bad encoder.
Since he needs a few other things done with the unit, he made the decision to 
send it back to Elecraft and have qualified techs perform the repair. Painful 
and costly but necessary.
When we did the hard reset, we hoped it would solve the B control problem. 
Well, it didn’t. Now we can’t even scroll through the CONFIG menus to put 
everything back as he had it.

Doesn’t matter. It needs to go home.

Thanks again for the valued suggestions!!

73 …

Jim Leder … K8CXM

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Re: [Elecraft] K3 problem (vfoB knob problem)

[Geert Jan de Groot]

The A and B knob each have identical encoders that use plug-in boards to 
the front panel PCB. Chances are that the encoder isn't connected 
anymore (got loose).


Opening up the front panel should tell. Note that the A and B encoder 
are identical so you can swap them for testing.


Note that assembly of the front panel is quite fussy with distance 
rings, etc. You are well advised to keep notes of how the front panel 
was assembled when you take it apart. It also makes sense to have the 
assembler's manual at hand.


Recent adventures with swapping parts on an older K3 learned that the B 
encoder sits in a little deeper with the new VFO-B knob. As a result, in 
my case, the solder pins were touching (scratching) the front panel PCB. 
I fixed this by cutting the jumper pins flush and putting in some 
isolation, just to be sure.


I don't expect any broken parts, but some disassembly required. When you 
disassemble / re-assemble, be GENTLE with the volume knobs, they are 
known to split on older serial numbers.


Geert Jan
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Re: [Elecraft] K3 problem

[Nr4c]

If there is a sub-receiver check if the VFOs are linked. 



Sent from my iPhone
...nr4c. bill


> On Oct 24, 2019, at 4:20 PM, Jim Leder  wrote:
> 
> Just got back from visiting a friend who has an older K3. After fussing 
> around with RS232 cables, we finally got the firmware updated, it was quite 
> old. But, BEFORE we did the update we knew we had the problem (reason we did 
> the update). So, the update had no bearing on what is wrong
> Problem is the VFO B knob has NO effect on anything. He can’t run split by 
> using it even though he is able to do A>B ok. To change the B frequency, he 
> needs to do A/B , change it, then A/B back again. Doing the split will allow 
> it to transmit what’s in B, he just can’t change it with the VFO B control.
> Related to this is the inability to enter the config menu and scroll through 
> the options.
> 
> Net is the VFO B control does nothing.
> 
> I suspect something to do with the alternate VFO encoder or one of it’s 
> connections.
> 
> Opinions? Seems to me a visit back to the mothership.
> 
> Thanks.
> 
> Jim Leder … K8CXM
> 
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Re: [Elecraft] K3 problem

[iain macdonnell - N6ML]

On Thu, Oct 24, 2019 at 1:20 PM Jim Leder  wrote:
>
> Just got back from visiting a friend who has an older K3. After fussing 
> around with RS232 cables, we finally got the firmware updated, it was quite 
> old. But, BEFORE we did the update we knew we had the problem (reason we did 
> the update). So, the update had no bearing on what is wrong
> Problem is the VFO B knob has NO effect on anything. He can’t run split by 
> using it even though he is able to do A>B ok. To change the B frequency, he 
> needs to do A/B , change it, then A/B back again. Doing the split will allow 
> it to transmit what’s in B, he just can’t change it with the VFO B control.
> Related to this is the inability to enter the config menu and scroll through 
> the options.
>
> Net is the VFO B control does nothing.
>
> I suspect something to do with the alternate VFO encoder or one of it’s 
> connections.
>
> Opinions? Seems to me a visit back to the mothership.

... or try to diagnose and fix it yourself. The VFO A and B encoders
are the same, so you could swap them to determine if it's the encoder
that's bad or something else

73,

~iain / N6ML
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[Elecraft] K3 problem

[Jim Leder]

Just got back from visiting a friend who has an older K3. After fussing around 
with RS232 cables, we finally got the firmware updated, it was quite old. But, 
BEFORE we did the update we knew we had the problem (reason we did the update). 
So, the update had no bearing on what is wrong
Problem is the VFO B knob has NO effect on anything. He can’t run split by 
using it even though he is able to do A>B ok. To change the B frequency, he 
needs to do A/B , change it, then A/B back again. Doing the split will allow it 
to transmit what’s in B, he just can’t change it with the VFO B control.
Related to this is the inability to enter the config menu and scroll through 
the options.

Net is the VFO B control does nothing.

I suspect something to do with the alternate VFO encoder or one of it’s 
connections.

Opinions? Seems to me a visit back to the mothership.

Thanks.

Jim Leder … K8CXM

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Re: [Elecraft] K3 problem after latest sw update

[pa0kv]

Problem solved!
FTP does not work here anymore due to unknown reasons.
As a result, a much older version of firmware has been installed.
For some unclear reason I kept the old firmware files. But now I moved them
to another folder. I received the latest firmware via email.
After installation, everything works as it should.

Thanks Elecraft/Wayne!

73s, Twan - PA0KVhttp://www.pa0kv.nl


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Re: [Elecraft] K3 problem after latest sw update

[pa0kv]

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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Re: [Elecraft] K3 problem after latest sw update

[Nr4c]

Restore the CONFIG copy you made before you updated FW. You did do a CONFIG 
backup didn’t you?

Sent from my iPhone
...nr4c. bill


> On Sep 26, 2018, at 3:30 PM, pa...@pa0kv.nl wrote:
> 
> Hi!
> 
> Yesterday I updated my K3's sw. After some shutdown and startups it came up 
> as normal.
> 
> But there is no reception. I get noise from my antenna. Unplug the antenna, 
> no noise.
> Send a signal in the air on the tuned frequency ... nothing. No S-meter, no 
> biep.
> 
> What went wrong? I did reinstall all updates. No result.
> 
> Twan - PA0KV
> 
> 
> 
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[Elecraft] K3 problem after latest sw update

[pa0kv]

Hi!

Yesterday I updated my K3's sw. After some shutdown and startups it came 
up as normal.


But there is no reception. I get noise from my antenna. Unplug the 
antenna, no noise.
Send a signal in the air on the tuned frequency ... nothing. No S-meter, 
no biep.


What went wrong? I did reinstall all updates. No result.

Twan - PA0KV



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Re: [Elecraft] k3 problem

[Don Wilhelm]

Bob,

He will have to wait until Tuesday - Elecraft is closed Monday.
In the meantime, he should look at what is enabled for his transmit 
filters using K3 Utility.  He needs to know what filters are installed.
There should be a sticker on the inside of the top cover indicating 
which filters are installed.


73,
Don W3FPR

On 12/31/2016 7:13 PM, Bob Gibson via Elecraft wrote:

Well I guess he will have to call on Monday to Elecraft to get help.. over the 
phone will just not work.. Thanks to all who replied!!73s Bob W5RG
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[Elecraft] k3 problem

[Bob Gibson via Elecraft]

Well I guess he will have to call on Monday to Elecraft to get help.. over the 
phone will just not work.. Thanks to all who replied!!    73s Bob W5RG
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Re: [Elecraft] k3 problem

[Don Wilhelm]

Bob,

The list of error codes start on page 68 of the
K3 manual.
ERR EFX does not exist, but ERR TXF is valid - it says the filter 
configured for transmit is not valid.
That is relatively easy to see with K3 Utility - Configuration tab, 
Configure Xtal Filters.

The filter for CW, DATA, SSB must be the 2.7 or 2.8 kHz filter.
For ESSB it needs to be the 6Khz filter and AM can use either the 6kHz 
or 13kHz filter

And for FM it must be the 13kHz filter.

Is there any chance he has turned on ESSB mode in the menu and does not 
have the 6kHz filter installed?


73,
Don W3FPR

On 12/31/2016 5:40 PM, Bob Gibson via Elecraft wrote:

Hi Fellows.. I have a friend that I'm trying to help.. he is 85 years old and 
has a k3. He turned on the radio today and got a err exf message... or he may 
have said err txf. not sure.. I told him I would try to help him.. he is in 
OKLA and I'm in Florida so it is not easy.. Can someone please tell me what the 
message means.. and I will call him back. He is a very dear ham buddy of 60 
years. Thanks73s Bob W5RG

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Re: [Elecraft] k3 problem

[Harry Yingst via Elecraft]

As per the K3 Manual Rev D10, Page 70

ERR TXF Invalid transmit crystal filter bandwidth

The crystal filter selected for TX (with CONFIG:FLTX) is either too narrow or 
too wide.
You must specify a filter that is 2.7 or 2.8 kHz wide for CW/DATA/SSB, 6 kHz 
for AM, and 13.0 kHz for FM).


That being said it could be a mis-configuration, or possible Corrupt firmware 
in the radio (Speculation from reading past messages)





  From: Bob Gibson via Elecraft <elecraft@mailman.qth.net>
 To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> 
 Sent: Saturday, December 31, 2016 5:40 PM
 Subject: [Elecraft] k3 problem
   
Hi Fellows.. I have a friend that I'm trying to help.. he is 85 years old and 
has a k3. He turned on the radio today and got a err exf message... or he may 
have said err txf. not sure.. I told him I would try to help him.. he is in 
OKLA and I'm in Florida so it is not easy.. Can someone please tell me what the 
message means.. and I will call him back. He is a very dear ham buddy of 60 
years. Thanks    73s Bob W5RG
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[Elecraft] k3 problem

[Bob Gibson via Elecraft]

Hi Fellows.. I have a friend that I'm trying to help.. he is 85 years old and 
has a k3. He turned on the radio today and got a err exf message... or he may 
have said err txf. not sure.. I told him I would try to help him.. he is in 
OKLA and I'm in Florida so it is not easy.. Can someone please tell me what the 
message means.. and I will call him back. He is a very dear ham buddy of 60 
years. Thanks    73s Bob W5RG
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[Elecraft] K3 problem

[n1ix]

My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut 
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button instead of
holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

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Re: [Elecraft] K3 problem

[Dave Hachadorian]

Try this:
http://marc.info/?l=elecraft=144267531705514=2


Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- 
From: n...@n1ix.com

Sent: Monday, February 8, 2016 10:09 AM
To: 'Elecraft'
Subject: [Elecraft] K3 problem


My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button 
instead of

holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

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Message delivered to k6ll.d...@gmail.com 


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Re: [Elecraft] K3 problem

[n1ix]

Problem is fixed thanks to Dave, K6LL and Elecraft support for the
suggestions. Thanks for the great support and a fantastic reflector!
If anyone need the fix it is at. 

http://marc.info/?l=elecraft=144267531705514=2

Dave N1IX

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
n...@n1ix.com
Sent: Monday, February 08, 2016 12:09 PM
To: 'Elecraft' <elecraft@mailman.qth.net>
Subject: [Elecraft] K3 problem


My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button instead of
holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

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Re: [Elecraft] K3 Problem Solved!!!!

[Vic Rosenthal]

Glad it works, but this is strange. I always do firmware updates with the P3 in 
line.

Vic 4X6GP/K2VCO 

 On Aug 22, 2015, at 2:46 AM, pastor...@verizon.net wrote:
 
 Well, it seems that the prolific cables do work with windows 10 and the K3. 
 Evidently you can't connect the cable to the P3 and then to the K3. It must 
 be connected directly to the K3. Once I did that the firmware loaded and 
 everything is back to normal. Hopefully Howard at Elecraft will read this. 
 Thanks to all the people that told me to connect the cable directly to the 
 K3. Mark Griffin, KB3Z
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Re: [Elecraft] K3 Problem Solved!!!!

[Alan]

On 08/22/2015 02:49 AM, Vic Rosenthal wrote:

Glad it works, but this is strange. I always do firmware updates with the P3 in 
line.


The one time that doesn't work is if the K3 is in manual 
firmware-download mode, perhaps due to a failure of a previous download. 
 For that, the P3 should be bypassed.  The easiest way to ensure that 
is to unplug its power connector.


Alan N1AL

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Re: [Elecraft] K3 Problem Solved!!!!

[Lyle Johnson]

You can also try turning the P3 OFF, then loading.  This will confirm 
the wiring/cables/etc.


73,

Lyle KK7P

...The connection with the serial adapter cable to the P3 *should* 
have worked.  That means you may have to do some additional 
investigation.


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[Elecraft] K3 Problem Solved!!!!

[pastormg2]

Well, it seems that the prolific cables do work with windows 10 and the K3. 
Evidently you can't connect the cable to the P3 and then to the K3. It must be 
connected directly to the K3. Once I did that the firmware loaded and 
everything is back to normal. Hopefully Howard at Elecraft will read this. 
Thanks to all the people that told me to connect the cable directly to the K3. 
Mark Griffin, KB3Z
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Re: [Elecraft] K3 Problem Solved!!!!

[Don Wilhelm]

Mark,

I am glad to hear that you now have resolved the problem.  Sorry to hear 
of your frustration, but those computer COM port issues can indeed be 
frustrating at times.


The connection with the serial adapter cable to the P3 *should* have 
worked.  That means you may have to do some additional investigation.  I 
would first suspect the K3 to P3 RS-232 cable, or the connectors - make 
sure the jackscrews are properly fastened. Now that the crisis has 
passed, connect the K3 to P3 serial cable and connect your P3 to the USB 
to serial cable - then see if K3 Utility can find and connect with the 
K3.  If not, then troubleshoot that particular problem.


I would also suggest that you obtain another USB to serial adapter - 
preferably one with an FTDI chipset.  You should have a couple of USB to 
serial adapters on hand to use.  It is always good to have a spare to 
use just as a check - they are not that expensive and serve as good 
insurance when you can try an alternate.
I recall that you initially tried loading the firmware through a 
Microham device - that is a NO-NO, disconnect the Microham and connect 
directly through a proper working USB to serial adapter when loading 
firmware.


I do not know anything about Windows 10 yet, but I recall reading 
somewhere that it is not always consistent in the COM port assignments 
when using USB to serial adapters - perhaps that was part of your 
problem - determining the correct COM port to be used in K3Utility.  
Yes, K3Utility can *usually* detect the correct COM port, but there are 
some occasions for 'false positive responses that can occur when it 
does a port search, so it is best to determine which COM port your 
operating system has assigned for your USB to serial adapter and tell K3 
Utility to use that COM port.
In prior versions of Windows, it was as simple as going into Device 
Manager and looking at the Ports - unplug the adapter to see which port 
goes away, and then plug it back in and see which COM port is assigned 
to that adapter.  Windows 10 may be a bit different, but something 
similar should exist.


Howard may or may not see your post to the reflector - I don't know if 
he monitors the reflector in his off hours.  It would be best to send 
him a direct email.  At this hour, he should be off enjoying his 
weekend, but I don't think he would not leave a customer hanging if 
you have had prior communications with him.


73,
Don W3FPR

On 8/21/2015 7:46 PM, pastor...@verizon.net wrote:

Well, it seems that the prolific cables do work with windows 10 and the K3. 
Evidently you can't connect the cable to the P3 and then to the K3. It must be 
connected directly to the K3. Once I did that the firmware loaded and 
everything is back to normal. Hopefully Howard at Elecraft will read this. 
Thanks to all the people that told me to connect the cable directly to the K3. 
Mark Griffin, KB3Z



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[Elecraft] K3 problem

[Jim Bobo]

Just got my antenna up after 3 years of the air and tried the K3. It 
just shuts down when keyed. Was back to the factory several months ago 
and not been turned on since. Have a manual somewhere but can't put my 
hands on it. Any help would be appreciated.


73, Jim, W5ODD
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Re: [Elecraft] K3 problem

[Mike Reublin]

Jim -
You can download the manual. http://www.elecraft.com/K2_Manual_Download_Page.htm

73, Mike NF4L

 On Oct 25, 2014, at 1:06 PM, Jim Bobo jrb3...@gmail.com wrote:
 
 Just got my antenna up after 3 years of the air and tried the K3. It just 
 shuts down when keyed. Was back to the factory several months ago and not 
 been turned on since. Have a manual somewhere but can't put my hands on it. 
 Any help would be appreciated.
 
 73, Jim, W5ODD
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Re: [Elecraft] K3 problem

[Vic Rosenthal 4X6GP/K2VCO]

Could the power supply be shutting down for some reason? Measure the PS 
voltage when this happens.


Also, try transmitting into a dummy load to eliminate possible 
RF-in-the-shack issues.


On 25 Oct 2014 20:06, Jim Bobo wrote:

Just got my antenna up after 3 years of the air and tried the K3. It
just shuts down when keyed. Was back to the factory several months ago
and not been turned on since. Have a manual somewhere but can't put my
hands on it. Any help would be appreciated.

73, Jim, W5ODD



--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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Re: [Elecraft] K3 problem

[Don Wilhelm]

Jim,

Check the power supply to see if it is shutting off - if it not that, 
try the K3 into a dummy load.  If the problem goes away with the dummy 
load, the most likely reason is RF in the shack.


I did not think I had a problem with RF in the shack until I recently 
tried working on 10 meters.  At power levels above 75 watts, the K3 
would turn off all by itself - but no problem into a dummy load, so I 
have to get some ferrite on that antenna.


If RF is causing it, take heed of the wealth of information for 
attacking it in K9YC's paper on dealing with RFI at 
http://audiosystemsgroup.com/RFI-Ham.pdf


73,
Don W3FPR

On 10/25/2014 1:06 PM, Jim Bobo wrote:
Just got my antenna up after 3 years of the air and tried the K3. It 
just shuts down when keyed. Was back to the factory several months ago 
and not been turned on since.


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[Elecraft] K3: Problem with CM500 plugged into front panel through AD1K

[Jim Leder (Hotmail)]

I discovered the same thing. I still use the front connector, but now I have a 
stereo to mono adapter in the mic line plugged into the AD-1K. Works perfect.


 Jim Bob Buckeye 
AKA
   Jim Leder
K8CXM since 1961
 IBM retiree since 1999
  
There are 10 types of people in this world -- those who understand binary
and those who don't.

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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Jim Brown]

This is really a VERY simple problem with a very simple solution. You 
buy a mic connector that mates with the K3 mic connector. You buy a 
cable-mount female 1/8-in RTS jack. May make a short adapter cable using 
a short piece of single conductor-shielded cable, like RG58. On one end, 
you solder the tip of the RTS jack to the center conductor and the 
sleeve of the RTS jack to the cable shield. On the other end, you wire 
the center conductor to the mic input pin of the K3, and you wire the 
cable shield to the shell of the mic connector. That's it!  Two 
connectors, a short piece of coax, and a soldering iron.


Another simple solution is a pre-made cable from R/S or equivalent with 
a female TRS jack on one end. Cut the cable, wire the end from the TRS 
jack to a connector that mates with the K3 mic jack. Ham stores sell 
these connectors.  The Power Point on my website about Ham Interfacing 
lists the part numbers of good TRS jacks and a good place to buy them.


This is ham radio, not CB radio or high futility A/V.  Hams study 
equipment manuals to learn connector pin-out, they have soldering irons 
and make their own cables.


73, Jim K9YC




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[Elecraft] K3: Problem with CM500 plugged into front panel through AD1K

[Stan Rowe]

Thanks to all that replied to my query.  Don, W3FPR, hit the nail on the
head that the adapter has a mono jack and the CM500 has a stereo plug.  The
tip and the ring of the CM500 mic plug are connected together, so when
plugged into a mono jack, the audio is shorted to the shell.  For now, at
least, I will keep the CM500 plugged into the rear phone and mic jack on the
K3.

 

I appreciate the expertise on this reflector.

Stan - K6VWE

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Re: [Elecraft] K3: Problem with CM-500 plugged into frontpanel through AD1K

[barry whittemore]

I do not understand the need or desire to use the front port. 

I use CM-500 but plug into the rear ports.  One of the features of the really 
like about the K3 is the clean look with nothing plugged into the front.

I converted an old hand mike into a K3 pinout so i could use it if i ever 
wanted to use a hand mike.  so far other than when i tested it the connector 
has been vacant.

GL 

 

Barry

NF1O

  
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[Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Stan Rowe]

Does anyone have any ideas why my Yamaha CM-500 microphone won't work when
plugged into the front of the K3.  I am using the Kenwood AD1K adapter and I
have the firmware set to select the front panel, low gain, with bias on
(FP.L bIAS).  The CM-500 headphones are plugged into the Phones jack on the
front of the K3 and work fine.  The CM-500 mic plug (grey) is plugged into
the corresponding jack on the AD1K.   When I press my footswitch, the K3
goes into transmit but there is no audio when I speak into the CM-500's
microphone.  I have tried the footswitch plugged in both on the back of the
K3 and into the AD1K footswitch jack and it works fine (puts the K3 into
transit) in both cases.

 

When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works
like it should.  In that case I have the firmware set to RP.L bIAS.and both
the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500
is not the culprit.

 

It almost seems like the AD1K is the problem.

 

This must be something simple, but I am stuck.  Any suggestions much
appreciated.

Thanks

Stan - K6VWE

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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Jim Brown]

On 1/21/2014 1:14 PM, Stan Rowe wrote:

It almost seems like the AD1K is the problem.


My guess is that the adapter is not wired properly.

73, Jim K9YC
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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Joe Subich, W4TV]

Use an Ohm meter and see if pin of the Foster plug is connected
to the center pin of the 3.5mm jack on the AD1-K (DC connection).
It is entirely possible that the adapter has a blocking capacitor
as the AD1-K was designed for use with Heil's dynamic microphones
which do not want DC on the mic element.

73,

   ... Joe, W4TV


On 1/21/2014 4:14 PM, Stan Rowe wrote:

Does anyone have any ideas why my Yamaha CM-500 microphone won't work when
plugged into the front of the K3.  I am using the Kenwood AD1K adapter and I
have the firmware set to select the front panel, low gain, with bias on
(FP.L bIAS).  The CM-500 headphones are plugged into the Phones jack on the
front of the K3 and work fine.  The CM-500 mic plug (grey) is plugged into
the corresponding jack on the AD1K.   When I press my footswitch, the K3
goes into transmit but there is no audio when I speak into the CM-500's
microphone.  I have tried the footswitch plugged in both on the back of the
K3 and into the AD1K footswitch jack and it works fine (puts the K3 into
transit) in both cases.



When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works
like it should.  In that case I have the firmware set to RP.L bIAS.and both
the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500
is not the culprit.



It almost seems like the AD1K is the problem.



This must be something simple, but I am stuck.  Any suggestions much
appreciated.

Thanks

Stan - K6VWE

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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Don Wilhelm]

Stan,

Try a test - put a bare stereo plug into the adapter and check with your 
ohmmeter to see if there is continuity between the ring and the shell of 
the plug.
If so, that is the reason - the adapter is using a mono jack and the 
CM500 has a stereo plug.  The tip and ring of the CM500 mic plug are 
connected together, so when plugged into a mono jack, the audio is 
shorted to the shell.


73,
Don W3FPR

On 1/21/2014 4:14 PM, Stan Rowe wrote:

Does anyone have any ideas why my Yamaha CM-500 microphone won't work when
plugged into the front of the K3.  I am using the Kenwood AD1K adapter and I
have the firmware set to select the front panel, low gain, with bias on
(FP.L bIAS).  The CM-500 headphones are plugged into the Phones jack on the
front of the K3 and work fine.  The CM-500 mic plug (grey) is plugged into
the corresponding jack on the AD1K.   When I press my footswitch, the K3
goes into transmit but there is no audio when I speak into the CM-500's
microphone.  I have tried the footswitch plugged in both on the back of the
K3 and into the AD1K footswitch jack and it works fine (puts the K3 into
transit) in both cases.

  


When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works
like it should.  In that case I have the firmware set to RP.L bIAS.and both
the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500
is not the culprit.

  





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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Joe Subich, W4TV]

Make pin in the first sentence pin 1 ...


73,

   ... Joe, W4TV


On 1/21/2014 5:07 PM, Joe Subich, W4TV wrote:


Use an Ohm meter and see if pin of the Foster plug is connected
to the center pin of the 3.5mm jack on the AD1-K (DC connection).
It is entirely possible that the adapter has a blocking capacitor
as the AD1-K was designed for use with Heil's dynamic microphones
which do not want DC on the mic element.

73,

... Joe, W4TV


On 1/21/2014 4:14 PM, Stan Rowe wrote:

Does anyone have any ideas why my Yamaha CM-500 microphone won't work
when
plugged into the front of the K3.  I am using the Kenwood AD1K adapter
and I
have the firmware set to select the front panel, low gain, with bias on
(FP.L bIAS).  The CM-500 headphones are plugged into the Phones jack
on the
front of the K3 and work fine.  The CM-500 mic plug (grey) is plugged
into
the corresponding jack on the AD1K.   When I press my footswitch, the K3
goes into transmit but there is no audio when I speak into the CM-500's
microphone.  I have tried the footswitch plugged in both on the back
of the
K3 and into the AD1K footswitch jack and it works fine (puts the K3 into
transit) in both cases.



When plugged into the rear Phone and Mic jacks on the K3, the CM-500
works
like it should.  In that case I have the firmware set to RP.L bIAS.and
both
the CM-500 microphone and headphones work fine, so I'm quite sure the
CM-500
is not the culprit.



It almost seems like the AD1K is the problem.



This must be something simple, but I am stuck.  Any suggestions much
appreciated.

Thanks

Stan - K6VWE

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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[bill conkling]

The AD1K has a DC blocking cap built in.  Plug it in the rear jack or use the 
battery box provided with the CM500 to provide bias.

...bill nr4c

Sent from my Verizon Wireless 4G LTE DROID

Stan Rowe shrt...@chartermi.net wrote:

Does anyone have any ideas why my Yamaha CM-500 microphone won't work when
plugged into the front of the K3.  I am using the Kenwood AD1K adapter and I
have the firmware set to select the front panel, low gain, with bias on
(FP.L bIAS).  The CM-500 headphones are plugged into the Phones jack on the
front of the K3 and work fine.  The CM-500 mic plug (grey) is plugged into
the corresponding jack on the AD1K.   When I press my footswitch, the K3
goes into transmit but there is no audio when I speak into the CM-500's
microphone.  I have tried the footswitch plugged in both on the back of the
K3 and into the AD1K footswitch jack and it works fine (puts the K3 into
transit) in both cases.

 

When plugged into the rear Phone and Mic jacks on the K3, the CM-500 works
like it should.  In that case I have the firmware set to RP.L bIAS.and both
the CM-500 microphone and headphones work fine, so I'm quite sure the CM-500
is not the culprit.

 

It almost seems like the AD1K is the problem.

 

This must be something simple, but I am stuck.  Any suggestions much
appreciated.

Thanks

Stan - K6VWE

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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[Don Wilhelm]

Bill,

Are you certain about that?  Bob Heil has told me in the past that none 
of his adapters have blocking capacitors.


73,
Don W3FPR

On 1/21/2014 7:50 PM, bill conkling wrote:

The AD1K has a DC blocking cap built in.  Plug it in the rear jack or use the 
battery box provided with the CM500 to provide bias.

...bill nr4c




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Re: [Elecraft] K3: Problem with CM-500 plugged into front panel through AD1K

[bill conkling]

Well, I sure thought I read it.

Mind isn't what it used to be.  I'll go back to sleep.

...bc

Sent from my Verizon Wireless 4G LTE DROID

Don Wilhelm w3...@embarqmail.com wrote:

Bill,

Are you certain about that?  Bob Heil has told me in the past that none 
of his adapters have blocking capacitors.

73,
Don W3FPR

On 1/21/2014 7:50 PM, bill conkling wrote:
 The AD1K has a DC blocking cap built in.  Plug it in the rear jack or use 
 the battery box provided with the CM500 to provide bias.

 ...bill nr4c



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[Elecraft] K3 Problem: Blank display Won't turn OFF

[K8RS]

Need help with my K3 S/N 280.

While loading new firmware into the KPA500, something happened to my K3.  The 
firmware load to the KPA500 appears to have succeeded, but now the K3 is ON 
with a blank display, the K3 won’t turn OFF and the K3 Utility says that “COM3 
is being used by another application”.  It looks like I’ve lost my K3 firmware 
and cannot access the K3 in any way.  Wow, what a mess!  I tried turning things 
OFF and , then, ON again to no avail.

What happened?  And what can I do to get the K3 to identify itself and work 
again.

Roger K8RS
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Re: [Elecraft] K3 Problem: Blank display Won't turn OFF

[Rick Bates]

Roger, 

Do you have a KAT500?  It must be ON before booting the K3.

Does it say MCU LD on the display (may be unlit, use a flashlight)?  Then
reload the firmware.

The COM3 busy may (probably does) require a reboot of the computer.

Try disconnecting the serial port.  Since the computer hung that port out to
dry, it may be toggling something that denies the K3 the ability to boot.

73,
Rick wa6nhc

-Original Message-
From: K8RS

While loading new firmware into the KPA500, something happened to my K3.
The firmware load to the KPA500 appears to have succeeded, but now the K3 is
ON with a blank display, the K3 won't turn OFF and the K3 Utility says that
COM3 is being used by another application.  It looks like I've lost my K3
firmware and cannot access the K3 in any way.  Wow, what a mess!  I tried
turning things OFF and , then, ON again to no avail.

What happened?  And what can I do to get the K3 to identify itself and work
again.

Roger K8RS

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Re: [Elecraft] K3 Problem: Blank display Won't turn OFF

[Matt Zilmer]

To put your K3 back into a usable state:

0.  Kill the KPA500 utility program.  This should leave your COM3 free
for the K3 utility.  If it doesn't then reboot the computer.

1.  Remove the K3 power and leave it disconnected for 15 seconds or
so.

2.  Re-connect K3 power and hold the K3's power switch down for 10
seconds, then release (might take a little longer).  To be sure the K3
is in a force-load state, look at the display.  It should have the
backlight off and MCU LD showing.

3.  The K3 is in a force-load mode now.  Bring up your utility and
reload firmware.  

Best to contact Elecraft support so that they can help figure out what
happened.

73,
matt W6NIA

On Thu, 30 May 2013 16:06:46 -0400, you wrote:

Need help with my K3 S/N 280.

While loading new firmware into the KPA500, something happened to my K3.  The 
firmware load to the KPA500 appears to have succeeded, but now the K3 is ON 
with a blank display, the K3 won’t turn OFF and the K3 Utility says that “COM3 
is being used by another application”.  It looks like I’ve lost my K3 firmware 
and cannot access the K3 in any way.  Wow, what a mess!  I tried turning 
things OFF and , then, ON again to no avail.

What happened?  And what can I do to get the K3 to identify itself and work 
again.

Roger K8RS
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[Elecraft] K3: Problem Solved with K3 S/N 280

[K8RS]

Group,
 Problem Solved!  Many thanks for all the suggestions.  It turns 
out that the issue was much more simple than I imagined.  I had no power t 
going to the KAT500.  We  had Severe Thunderstorm Warnings on Tuesday and I 
unplugged everything.  Did not notice that the KAT500 was still without power 
when I started downloading the firmware to the KPA500.  The result:  The K3 
wouldn’t turn ON properly when I tried to get on the air.  Plugging the power 
plug back into the KAT500 rectified the issue.  All is well with K3 S/N 280!  
The KPA500 has its new firmware. Thanks again for the help.
 Roger Stimson K8RS
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[Elecraft] K3 Problem in Assembly, need advice

[Brian F. Wruble]

I am assembling K3 s/n 7394.  I have come to the step on page 45, DMM
resistance measurements.  The resistance between a terminal on U12 and
ground measures 445 ohms.  It is supposed to be 500 ohms.  I am using an
accurate Fluke DMM.

What am I looking for?

73 de Brian W3BW


*Brian F. Wruble, C.F.A.

*70 is the new 40.*
*
Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077
Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930
eFax  305.768.0278
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Re: [Elecraft] K3 Problem in Assembly, need advice

[Twan at pa0kv.nl]

Hi Brian,

this measure point is the output terminal of a 5V voltage regulator (U12 
MC7805ACT).
A value of 445 ohms is not alarming. A matter of tolerances in all parts 
connected to this point.

But I expect Elecraft will react too.

73s,   Twan - PA0KV


Message: 14
Date: Sat, 18 May 2013 10:32:20 -0400
From: Brian F. Wrublebwru...@gmail.com
To: Elecraft Reflectorelecraft@mailman.qth.net
Subject: [Elecraft] K3 Problem in Assembly, need advice
Message-ID:
CA+8EV6oR9kWMZMMLvX=vRaULbOE8Q+WYqs0iNjC0TyMDeR8R=q...@mail.gmail.com
Content-Type: text/plain; charset=ISO-8859-1

I am assembling K3 s/n 7394.  I have come to the step on page 45, DMM
resistance measurements.  The resistance between a terminal on U12 and
ground measures 445 ohms.  It is supposed to be 500 ohms.  I am using an
accurate Fluke DMM.

What am I looking for?

73 de Brian W3BW


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Re: [Elecraft] K3 Problem

[Lu Romero]

Yes, I also agree that CMP 30 is a bit much.  On my rig, the
open ragchew wide dynamic range setting is 18 and the in
your face contest compression punch setting is 24.  Any
more than 25, and you start to reach the point of
diminishing returns in inteligibility.  I use the Yamaha
Boomset here, so other mike's milage may vary.

Also, pay attention to the mic level setting, which is also
important. Both settings interact grately. Set the mic level
first, then add CMP to the mix.  Not the other way around.

You shouldnt be afraid to light up all the lights on the
right side of the meter consistently with the last light
flickering with mod peaks.  This is really an amazingly
clean audio chain we are working with. But as in everything,
too much of a good thing is often detrimental.

IMO, K3's audio processing chain seems to like consistent
input levels (still wish we could have attack and decay
handles for CMP, Lyle!).  The more consistent the input, by
close talking, by keeping control of your voice, even if it
is a P5 pileup, by managing the overall gain of your audio
chain, and by keeping external noise down, the more
modulation density you will get from this radio without
sounding like something from Guns and Roses record.

Lu - W4LT (currently /HK3)
K3, K1, P3  

==

Message: 3
Date: Sat, 27 Oct 2012 09:43:29 -0700
From: David Gilbert xda...@cis-broadband.com
Subject: Re: [Elecraft] K3 Problem
To: elecraft@mailman.qth.net
Message-ID: 508c0f31.9060...@cis-broadband.com
Content-Type: text/plain; charset=ISO-8859-1; format=flowed


Include me in that sentiment.  I have several times
monitored my audio 
while adjusting the compression.  CMP=20 gives great audio
quality and 
CMP=25 gives great contest audio.   CMP=30 generates
significant audio 
artifacts without any better intelligibility.   In my
opinion, CMP above 
30 merely adds trash to the bands.

73,
Dave   AB7E


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Re: [Elecraft] K3 Problem

[Edward R Cole]

I run COMP=20 on my K3 with a Heil HM10-5 desk mic (older model I 
bought in 1998 with wide freq element).  Get great audio reports on 
SSB on either HF or 2m-SSB.  I have only modified Tx equalization for 
three lowest audio freq bands as mainly running conversational 
operating on a couple HF Nets and most operating is VHF+.

I checked my COMP on the KX3 and it is only set to 8 with the MH3 
hand-mic.  On FM I had reports of overdeviation so lowered mic gain 
to 15.  SSB mic level appears to work at that level without complaint.

73, Ed - KL7UW, WD2XSH/45 (500-KHz)

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Re: [Elecraft] K3 Problem

[Bill W4ZV]

Dick, WN3R wrote
 With compression above 30

Wow!  The max I ever use is 24.  Microphones may vary but CMP=30 seems
awfully high.  

73,  Bill  W4ZV



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Re: [Elecraft] K3 Problem

[Jim]

I was thinking the same thing. I never go above 15 CMP. Mic is set to 30 and I 
easily get 100 watts PEP.

I would think a CMP set to 30 the receiving station could hear spiders crawling 
in your room.

KE4WY Jim



Sent from my iPod

On Oct 27, 2012, at 5:37 AM, Bill W4ZV btipp...@alum.mit.edu wrote:

 Dick, WN3R wrote
 With compression above 30
 
 Wow!  The max I ever use is 24.  Microphones may vary but CMP=30 seems
 awfully high.  
 
 73,  Bill  W4ZV
 
 
 
 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/K3-Problem-tp7564622p7564650.html
 Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3 Problem

[Nate Bargmann]

* On 2012 27 Oct 05:25 -0500, Jim wrote:
 I was thinking the same thing. I never go above 15 CMP. Mic is set to
 30 and I easily get 100 watts PEP.

I agree and have my cmp set to 13 and mic to 30 and I get good audio
reports which I consider something of a miracle!

Last night I tuned across 15m for a bit and there were some signals with
very bad audio.  One was so poor that after a couple of minutes I still
didn't know what his call was.  He wasn't getting any answers which
should have been a clue.

A little is good.  More is not always better!

73, de Nate, N0NB 

-- 

The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true.

Ham radio, Linux, bikes, and more: http://www.n0nb.us
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Re: [Elecraft] K3 Problem

[Fred Jensen]

I don't do much SSB but when I do I get 10 dB peak compression with the 
CMP set at 12.  I use a Heil Proset with the electret mic I got from 
Elecraft.  I regularly get unsolicited comments of really good audio. 
  My TX equalizer is set to the K9YC recommendations.  I can't imagine 
what it would sound like at CMP=30, but I bet it wouldn't be good.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

On 10/27/2012 3:24 AM, Jim wrote:
 I was thinking the same thing. I never go above 15 CMP. Mic is set to
 30 and I easily get 100 watts PEP.

 I would think a CMP set to 30 the receiving station could hear
 spiders crawling in your room.

 KE4WY Jim



 Sent from my iPod

 On Oct 27, 2012, at 5:37 AM, Bill W4ZV btipp...@alum.mit.edu
 wrote:

 Dick, WN3R wrote
 With compression above 30

 Wow!  The max I ever use is 24.  Microphones may vary but CMP=30
 seems awfully high.

 73,  Bill  W4ZV

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Re: [Elecraft] K3 Problem

[David Gilbert]

Include me in that sentiment.  I have several times monitored my audio 
while adjusting the compression.  CMP=20 gives great audio quality and 
CMP=25 gives great contest audio.   CMP=30 generates significant audio 
artifacts without any better intelligibility.   In my opinion, CMP above 
30 merely adds trash to the bands.

73,
Dave   AB7E



On 10/27/2012 2:37 AM, Bill W4ZV wrote:
 Dick, WN3R wrote
 With compression above 30
 Wow!  The max I ever use is 24.  Microphones may vary but CMP=30 seems
 awfully high.

 73,  Bill  W4ZV



 --
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Re: [Elecraft] K3 Problem

[Keith Heimbold]

I operate my K3 with compression of 14 and mic gain at 34-38 depending on 
conditions and environment (contesting, DXing or ragchewing). With the Yamaha 
MDE-100 microphone I get good audio reports. Guess each microphone has slightly 
different settings for optimum Audio quality.

Keith 
AG6AZ

Sent from my iPhone please excuse typos

On Oct 27, 2012, at 9:45 AM, David Gilbert xda...@cis-broadband.com wrote:

 
 Include me in that sentiment.  I have several times monitored my audio 
 while adjusting the compression.  CMP=20 gives great audio quality and 
 CMP=25 gives great contest audio.   CMP=30 generates significant audio 
 artifacts without any better intelligibility.   In my opinion, CMP above 
 30 merely adds trash to the bands.
 
 73,
 Dave   AB7E
 
 
 
 On 10/27/2012 2:37 AM, Bill W4ZV wrote:
 Dick, WN3R wrote
 With compression above 30
 Wow!  The max I ever use is 24.  Microphones may vary but CMP=30 seems
 awfully high.
 
 73,  Bill  W4ZV
 
 
 
 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/K3-Problem-tp7564622p7564650.html
 Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3 Problem

[Joe Subich, W4TV]

 CMP=20 gives great audio quality and CMP=25 gives great contest
 audio. CMP=30 generates significant audio artifacts without any
 better intelligibility.

My threshold for crap is a little lower.  CMP=20 is fine, the
audio gets rough much above that and by CMP=25 it is badly
distorted (even with PWR=0 so it's not RF feedback).

73,

... Joe, W4TV


On 10/27/2012 12:43 PM, David Gilbert wrote:

 Include me in that sentiment.  I have several times monitored my audio
 while adjusting the compression.  CMP=20 gives great audio quality and
 CMP=25 gives great contest audio.   CMP=30 generates significant audio
 artifacts without any better intelligibility.   In my opinion, CMP above
 30 merely adds trash to the bands.

 73,
 Dave   AB7E



 On 10/27/2012 2:37 AM, Bill W4ZV wrote:
 Dick, WN3R wrote
 With compression above 30
 Wow!  The max I ever use is 24.  Microphones may vary but CMP=30 seems
 awfully high.

 73,  Bill  W4ZV



 --
 View this message in context: 
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[Elecraft] K3 Problem

[Dick, WN3R]

I actually sent my rig back for this problem, but I didn't analyze 
properly so it came back to me with no problem found.  I now 
understand where my distortion is coming from.

With compression above 30, I seem to be getting some RF feedback when 
MIC+LIN is ON.  When it is OFF, audio is clean.  Thinking RF was being 
picked up by a cable, I removed them all.

It made no difference. In the TEST mode, tx audio is clean.

I am anxious to get this fixed before the contest so I can use voice 
recordings in N1MM.

Thanks

Dick, WN3R


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[Elecraft] [K3] problem with Transmitter Gain Calibration

[kj4raq]

Problem: 

  

The transmitter gain will not calibrate.  Receive an error code: 

  

Starting 5 watt calibration 

Calibrating at 1.900 MHz 

Calibration power settled at  0.0 W ; 

Elapsed time: 6 seconds 

Tx Gain calibration failed because transmit power did not reach the expected 
value 

5 watt calibration failed 

    

Radio is a new build.  Checking out at low power.  Installed the 100 watt power 
amplifier, then removed the amplifier to test at low power per book 
instructions.  I have reinstalled the PA jumper block for all test runs.  

  

The radio will not receive Hz filter and it is properly configured. 

  

Is there anything else I need to do to get back to low power configuration?   


Warren, KJ4RAQ
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Re: [Elecraft] [K3] problem with Transmitter Gain Calibration

[Wes Stewart]

I've had this happen several times after the output power disappeared.

It appears to be that the RF ground return to the output connector is completed 
through the 2D block at the upper rear of the K3 (as viewed from the front.)  

If I'm wrong about this I'm sure a response will be forthcoming, but my 
experience has been that loosening the screw(s) and scrubbing the interface 
to the output board (no ATU in my K3) and retightening will fix the problem.  
Until calling the next DX station that I need for a new one, that is.

Wes  N7WS

--- On Mon, 9/3/12, kj4...@comcast.net kj4...@comcast.net wrote:

Problem: 

  

The transmitter gain will not calibrate.  Receive an error code: 

  

Starting 5 watt calibration 

Calibrating at 1.900 MHz 

Calibration power settled at  0.0 W ; 

Elapsed time: 6 seconds 

Tx Gain calibration failed because transmit power did not reach the expected 
value 

5 watt calibration failed 

    

Radio is a new build.  Checking out at low power.  Installed the 100 watt power 
amplifier, then removed the amplifier to test at low power per book 
instructions.  I have reinstalled the PA jumper block for all test runs.  

  

The radio will not receive Hz filter and it is properly configured. 

  

Is there anything else I need to do to get back to low power configuration?   


Warren, KJ4RAQ
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[Elecraft] [K3] problem with Transmitter Gain Calibration

[kj4raq]

Problem: 

  



The transmitter gain will not calibrate. Receive an error code: 

  



Starting 5 watt calibration 

Calibrating at 1.900 MHz 

Calibration power settled at  0.0 W ; 

Elapsed time: 6 seconds 

Tx Gain calibration failed because transmit power did not reach the expected 
value 

5 watt calibration failed 



Radio is a new build. Checking out at low power. Installed the 100 watt power 
amplifier, then removed the amplifier to test at low power per book 
instructions. I have reinstalled the PA jumper block for all test runs. 



The radio will not receive Hz filter and it is properly configured. 



Is there anything else I need to do to get back to low power configuration? 


Warren, KJ4RAQ
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Re: [Elecraft] [K3] problem with Transmitter Gain Calibration

[Don Wilhelm]

You could try doing it manually to  jump-start it.  You have to do 
each band separately.
At least you could try that, and if still not successful, call support 
tomorrow (after 8AM California time) and they will walk you through the 
setup and/or assist with your problem.

73,
Don W3FPR

On 9/3/2012 2:43 PM, kj4...@comcast.net wrote:



 Problem:





 The transmitter gain will not calibrate. Receive an error code:





 Starting 5 watt calibration

 Calibrating at 1.900 MHz

 Calibration power settled at  0.0 W ;

 Elapsed time: 6 seconds

 Tx Gain calibration failed because transmit power did not reach the expected 
 value

 5 watt calibration failed



 Radio is a new build. Checking out at low power. Installed the 100 watt power 
 amplifier, then removed the amplifier to test at low power per book 
 instructions. I have reinstalled the PA jumper block for all test runs.



 The radio will not receive Hz filter and it is properly configured.



 Is there anything else I need to do to get back to low power configuration?


 Warren, KJ4RAQ
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Re: [Elecraft] [K3] Problem w/front panel switches

[hawley, charles j jr]

Get a roll of 3M super strength moulding tape at your local auto parts or farm 
store. Comes in a red package. Two different widths. It's a grey double sided 
sticky tape and leaves no residue if you remove it. It's intended for sticking 
mouldings onto the sides of cars.
 I cut a little square of about 3/8 ths inch and put under at least the two 
front feet on the K line stuff to keep everything from moving. It's good for 
sticking an outlet strip to the desk, etc. Won't hurt the paint and can be 
removed by rolling it off with your finger. Do not use too much like a whole 
strip of it, because it'll take a large force to break a large strip loose from 
say sticking an outlet strip to a formica desk. A little dot here and there 
does it.

Chuck, KE9UW
aka Jack, BMW Motorcycles BMWMOA #224


From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of Fred Jensen [k6...@foothill.net]
Sent: Sunday, August 26, 2012 9:55 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] Problem w/front panel switches

Well Phil's problem isn't mine, and I'm not even sure I have a problem,
but my K3 switches are a bit erratic.  They don't do things other than
what they should do, they just don't always do it reliably.  Going to TX
TEST, I'll often get a mode switch as if I tapped it instead.  Others
are sort of the same.

I have a hard time keeping the radio stable on the shelf, it really
isn't all that good for protection against gravity outages [like an
SX-28 was :-)], and it does move.  I think I need to figure out how to
get it really stable first.  Then we'll see.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

On 8/26/2012 9:39 AM, David Pratt wrote:
 Phil - Have you tried re-installing the Front Panel firmware?  Just a
 thought.

 73 de David G4DMP

 In a recent message, Phil  Debbie Salas dpsa...@tx.rr.com writes
 BTW - I can switch bands using the buttons on my KPA500, and it transmits
 fine.  Just front panel button problems.


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[Elecraft] [K3] Problem w/front panel switches

[Phil Debbie Salas]

Well - Thought I'd put this out here since it'll be tomorrow before I can 
contact Elecraft Support.

This morning my K3 (SN308) started having problems with the front panel 
controls.  I can't change bands with the BAND button, pressing the MODE 
button changes antennas, pressing the MV button plays my M1 CW message, 
etc.  I re-loaded all firmware, and I pulled the front panel loose and 
dabbed some DeOxit on the connector (I've heard of problems with the tin 
plated pins which I have).  Anyway, no joy.  Anyone see anything familiar, 
and know of a solution?

BTW - I can switch bands using the buttons on my KPA500, and it transmits 
fine.  Just front panel button problems.

Thanks,
Phil - AD5X 

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Re: [Elecraft] [K3] Problem w/front panel switches

[David Pratt]

Phil - Have you tried re-installing the Front Panel firmware?  Just a
thought.

73 de David G4DMP

In a recent message, Phil  Debbie Salas dpsa...@tx.rr.com writes
BTW - I can switch bands using the buttons on my KPA500, and it transmits
fine.  Just front panel button problems.
-- 
 + - - - - - - - - - - - - - - - - +
 | David M Pratt, Kippax, Leeds.   |
 | Website: http://www.g4dmp.co.uk |
 + - - - - - - - - - - - - - - - - +

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