Date   

Re: Problem - Solved

Alan Baker
 

Hi Bob.

I have already pm'd Bob (the other one <g>) regarding Anderson Power Poles.

When we were testing his K3 there were no issues moving it around or flexing my power cable, so I presume that there are no faults in the rig itself. The issue is most likely to be badly installed pins/shells on Bob's cable. To be clear - Bob did not make up that cable.

Most of the issues with Power Poles seem to be because installers use the incorrect crimp tool. It's imperative to use an 'official' crimp tool, otherwise the pins can get distorted and they don't fit the shell with the correct spring tension behind the pin, to ensure that it makes solid contact with its opposing receptacle pin.

I've always found slight difficulty in getting the pin to enter the shell correctly (I've sworn at them more than once <g>) but that's how it should be. When the pin is installed it needs reasonable force and there's a distinctive 'click' when it's correctly positioned. With the correct pressure from the backing spring, the pin should not move. If the pins get distorted, the previous conditions are often not met.

I suspect that if Bob re-makes the cable with new pins (using the correct crimp tool) all will be fully resolved.

73,

Alan. G4GNX

-----Original Message-----
From: Bob McGraw - K4TAX
Sent: Tuesday, June 11, 2019 4:02 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Problem - Solved

Many have used these radios and their power connections successfully for
years. Many have used them under rugged conditions at DXpeditions
successfully. I have other brands of radios that use the exact
configuration of PowerPole mounting. There is not issue in my experience.

As to the power cable, mine that came with the radio purchased new from
Elecraft, is quite flexible and sized correct for the current
demands. I would then question if someone / previous owner has "made"
their own power cables. Would seem likely so.

As to a learning curve, reading the manual several times is an absolute
must. As to the noise made by the radio when moving it around, the
solution is to turn the radio off before moving it. Mine is in a
position which I have to pull the radio forward and turn it to reach the
back. Again, correct cables and type are the solution to correct
movement and does not cause issues.

73

Bob, K4TAX



On 6/11/2019 4:13 AM, Bob G3REP via Groups.Io wrote:
I have taken the connectors apart and the crimp connections are solid and not an issue. There are two aspects of the power cable connections that caused the problem. The power poles do not "firmly" mate, which appears to be a design issue. It pushes in and has a slight locking resistance, but not rock solid. This is then aggravated by stiff connecting power cable that came with the set and would be capable of carrying much more than the max current required by the rig. Hence when working on the bench. plugging in other cables, etc; rotating the rig caused the connectors to loosen and hence the heart rendering ($$$$s) "crack" with the momentary power disconnection. This would not be a problem once the rig is settled in position.
(The fact the connector relies on a soldered joint straight onto the PCB and is not fixed to the chassis is a concern from a long term reliability aspect).
Great rig though, just has a steep learning curve. Have not tried Txing yet !

73s
Bob
G3REP




Re: Problem - Solved

Bob McGraw - K4TAX
 

Smart man!

73

Bob, K4TAX

On 6/11/2019 7:56 AM, NW0M wrote:
Greg,

When I move my K3 or connect/disconnect cables on the back, I always first power OFF the K3.  You may need to do the same.

73, Mitch
NWØM 


Re: Problem - Solved

Mitch NW0M
 

Greg,

When I move my K3 or connect/disconnect cables on the back, I always first power OFF the K3.  You may need to do the same.

73, Mitch
NWØM 


Re: Problem - Solved

Bob McGraw - K4TAX
 

Many have used these radios and their power connections successfully for years.   Many have used them under rugged conditions at DXpeditions successfully.  I have other brands of radios that use the exact configuration of PowerPole mounting. There is not issue in my experience.

As to the power cable, mine that came with the radio purchased new from Elecraft, is quite flexible and sized correct for the current demands.    I would then question if someone / previous owner has "made" their own power cables.   Would seem likely so.

As to a learning curve, reading the manual several times is an absolute must.    As to the noise made by the radio when moving it around, the solution is to turn the radio off before moving it.     Mine is in a position which I have to pull the radio forward and turn it to reach the back.  Again, correct cables and type are the solution to correct movement and does not cause issues.

73

Bob, K4TAX

On 6/11/2019 4:13 AM, Bob G3REP via Groups.Io wrote:
I have taken the connectors apart and the crimp connections are solid and not an issue. There are two aspects of the power cable connections that caused the problem. The power poles do not "firmly" mate, which appears to be a design issue. It pushes in and has a slight locking resistance, but not rock solid. This is then aggravated by stiff connecting power cable that came with the set and would be capable of carrying much more than the max current required by the rig. Hence when working on the bench. plugging in other cables, etc; rotating the rig caused the connectors to loosen and hence the heart rendering ($$$$s) "crack" with the momentary power disconnection. This would not be a problem once the rig is settled in position.
(The fact the connector relies on a soldered joint straight onto the PCB and is not fixed to the chassis is a concern from a long term reliability aspect).
Great rig though, just has a steep learning curve. Have not tried Txing yet !

73s
Bob
G3REP



Re: Problem - Solved

Bob G3REP
 

I have taken the connectors apart and the crimp connections are solid and not an issue. There are two aspects of the power cable connections that caused the problem. The power poles do not "firmly" mate, which appears to be a design issue. It pushes in and has a slight locking resistance, but not rock solid. This is then aggravated by stiff connecting power cable that came with the set and would be capable of carrying much more than the max current required by the rig. Hence when working on the bench. plugging in other cables, etc; rotating the rig caused the connectors to loosen and hence the heart rendering ($$$$s) "crack" with the momentary power disconnection. This would not be a problem once the rig is settled in position.
(The fact the connector relies on a soldered joint straight onto the PCB and is not fixed to the chassis is a concern from a long term reliability aspect).
Great rig though, just has a steep learning curve. Have not tried Txing yet !

73s
Bob
G3REP


Re: Problem - Solved

Bob McGraw - K4TAX
 

Sounds as though your power pole connectors on the power cable are in poor condition.   I strongly suggest one crimp and solder the terminals on to the wire before they are inserted into the red and black sleeves.     A loose connection on the DC power source can reek havoc with the radio.

73

Bob, K4TAX

On 6/10/2019 11:56 AM, Bob G3REP via Groups.Io wrote:
Hi Bob,
when Alan and I were finishing off the other day, he did warn me to switch the rig off by the power switch before switching the supply off as this can upset the config.
I had wondered how the problem had come about until today when I went to plug the 2nd Ant into the Aux Rx socket and I had exactly the same ear deafening click in the headphones. I had just touched the power connector.
I don't appear to have lost any setting.

Earlier I had suspected the problem was all a result of my construction skills fitting the new Aux Rx antenna socket, but thank goodness not!

73s
Bob
G3REP



Re: Power output fluctuation

Larry
 

I think you have a newer radio, mine is #763 but has mostly been good to me.  Funny, there thousands of the K3 out there that you never hear about.  
I bought a KX3 at Visalia in April.  Not the same as a K3 by any means but it is a nice radio and will do what is designed for.  Have only done some receiving with it so far.  Just took it out of the box on Saturday! Still a lot to learn about how to work the controls, multi purpose buttons.
Larry



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Jim AC0E <ham@...>
Date: 6/4/19 8:19 AM (GMT-07:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Power output fluctuation

Goat -
I've been fortunate that my K3 has given me zero problems so far....
Sorry I missed you this last trip... Was on the Dayton run...
Try the NCCC RTTY Sprint on Thursday evenings. Check out Ken, k6mr, on QRZ
for details.
73
Jim AC0E

On June 4, 2019 09:58:43 "Larry" <telegrapher@q.com> wrote:

> Back in April i had to go away for a while for family business. When i
> left i turned off the radio (K3), unplugged the power, turned off the AC
> and disconnected the antennas.  Everything was shutdown or off.
>
> When i got back in May i found that the power output on the K3, even
> though it was set for 25W was showing 35 or so on the Wattmeter, a Drake
> W-4.  Changing bands the problem was still there.  Running into a dummy
> load, the same indication.  I also noticed that when operating on 20M i
> have some kind of tone (noise?) coming from the radio.  That along with
> adjusting the power knob cause a variation or fluctuation in output
> power.  I run mostly FT8 with CW operation when necessary.  Seems like
> the fluctuation of output power has occurred to another list member
> previously or is that my imagination?  My hearing is directional so
> turning my head can eliminate noise and if it's above 1800 cycles i may
> not hear it at all.
>
> Thoughts?
>
> Larry
>
> W0OGH
>
>
>







Help with WJST-X, MicroKeyerII and K3

Eric Rosenberg W3DQ
 

I'm able to decode FT8 without any issues, but am having no luck transmitting. I can key the rig, but no tones are sent. I know tones are being generated, as when I set the output to the radio to SPEAKER, I can hear the tone through the computer speaker when I click on WSJT's TUNE button.

I'm stumped.

Any help is appreciated!

73,
Eric W3DQ


Re: Problem - Solved

Alan Baker
 

Bob.

By 'touched the power connector' do you mean disturbed the power connector by moving it?

If that's the case, perhaps you need to check the power pole connectors on the end of your cable. I have spares if you need to re-make them.

I didn't notice anything untoward whilst we were moving the rig around whilst still connected, using my cable, so if there is anything loose it's not likely to be inside the rig.
There also wasn't any issue apparent when I did the equivalent of a drop test, so I presume that there's nothing loose within the rig.

73,

Alan. G4GNX

-----Original Message-----
From: Bob McGraw - K4TAX
Sent: Monday, June 10, 2019 9:59 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Problem - Solved

Yes and by all means, always power the radio down / turn off by the POWER button before shutting the power supply down.

There is a circuit which saves the configuration when the radio is shut down by the POWER switch.

73
Bob, K4TAX
On Jun 10, 2019, at 11:56 AM, Bob G3REP via Groups.Io <rparkes197=aol.com@groups.io> wrote:

Hi Bob,
when Alan and I were finishing off the other day, he did warn me to switch the rig off by the power switch before switching the supply off as this can upset the config.
I had wondered how the problem had come about until today when I went to plug the 2nd Ant into the Aux Rx socket and I had exactly the same ear deafening click in the headphones. I had just touched the power connector.
I don't appear to have lost any setting.

Earlier I had suspected the problem was all a result of my construction skills fitting the new Aux Rx antenna socket, but thank goodness not!

73s
Bob
G3REP


Re: Problem - Solved

Bob McGraw - K4TAX
 

Yes and by all means, always power the radio down / turn off by the POWER button before shutting the power supply down.

There is a circuit which saves the configuration when the radio is shut down by the POWER switch.

73
Bob, K4TAX

On Jun 10, 2019, at 11:56 AM, Bob G3REP via Groups.Io <rparkes197=aol.com@groups.io> wrote:

Hi Bob,
when Alan and I were finishing off the other day, he did warn me to switch the rig off by the power switch before switching the supply off as this can upset the config.
I had wondered how the problem had come about until today when I went to plug the 2nd Ant into the Aux Rx socket and I had exactly the same ear deafening click in the headphones. I had just touched the power connector.
I don't appear to have lost any setting.

Earlier I had suspected the problem was all a result of my construction skills fitting the new Aux Rx antenna socket, but thank goodness not!

73s
Bob
G3REP




Re: Problem - Solved

Bob G3REP
 

Hi Bob,
when Alan and I were finishing off the other day, he did warn me to switch the rig off by the power switch before switching the supply off as this can upset the config.
I had wondered how the problem had come about until today when I went to plug the 2nd Ant into the Aux Rx socket and I had exactly the same ear deafening click in the headphones. I had just touched the power connector.
I don't appear to have lost any setting.

Earlier I had suspected the problem was all a result of my construction skills fitting the new Aux Rx antenna socket, but thank goodness not!

73s
Bob
G3REP


Re: Problem - Solved

Bob McGraw - K4TAX
 

Thanks for your update and reporting your findings.

73

Bob, K4TAX

On 6/10/2019 10:58 AM, Bob G3REP via Groups.Io wrote:
Thanks to Alan G4GNX (who lives 5miles away) he went through all the settings and it resolved all the issues that existed.

Later I did however find the cause of the problem when Anderson Power Pole connectors were touched. This explains the ear deafening clicks when I first had the problem and why a lot of the config settings went berserk.
Whether the problem is internal to the set or the connector itself is something to be investigated.

73s
Bob G3REP


Re: Problem - Solved

Bob G3REP
 

Thanks to Alan G4GNX (who lives 5miles away) he went through all the settings and it resolved all the issues that existed.

Later I did however find the cause of the problem when Anderson Power Pole connectors were touched. This explains the ear deafening clicks when I first had the problem and why a lot of the config settings went berserk.
Whether the problem is internal to the set or the connector itself is something to be investigated.

73s
Bob G3REP


Re: Problem - KANT3 Ant Selection

Bob McGraw - K4TAX
 

When these issues arise, has anyone though about reading the manual?   All of the settings one may use very in-frequently are there.

See pages 55 and 56 for the MENU items.

See pages 57 through 68 for the CONFIG items.

And pages 69 through 76 for ERROR messages.

Also using the K3 Utility, perform a back-up of the current WORKing configuration.    It is very easy to restore.

Seems the programming folks have gone to a lot of trouble to make life simple, yet we seem to prefer to take the complex route.

73

Bob, K4TAX


Re: Problem - KANT3 Ant selection

Alan Baker
 

Bob.

Just a word of warning. You absolutely should not poke around inside the rig without adequate anti-static precautions. Even Elecraft's suggestion of touching a ground point before you start may not be sufficient, and is only suggested as a last resort.

The problems static (at many thousands of volts) may cause, may not surface until many months later.

73,

Alan. G4GNX

-----Original Message-----
From: Bob G3REP via Groups.Io
Sent: Tuesday, June 4, 2019 8:12 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Problem - KANT3 Ant selection
Thanks Jim,
while trying to find out how to >> Select and monitor the voltage display setting in the K3<< I found the comments on the LCD Adj/Brt. I did not appreciate you could dim the illumination to zero as well as the display digits. So as per usual in a number of instances - Finger trouble ;-( Too many options to screw up on the way.

So I am now back at square 1 (I think) where the antenna selection display only shows Ant and not Ant1 or Ant2 so I will now start looking around the KANT3.

These problems are a very good, but hard way to learn about the rig though and it is a very hard learning curve for a BOF!
Just as well I have not measured the blood pressure recently.

73s
Bob
G3REP


Re: Problem - KANT3 Ant Selection

Bob G3REP
 

Thanks Jim,
while trying to find out how to >> Select and monitor the voltage display setting in the K3<< I found the comments on the LCD Adj/Brt. I did not appreciate you could dim the illumination to zero as well as the display digits. So as per usual in a number of instances - Finger trouble ;-( Too many options to screw up on the way.

So I am now back at square 1 (I think) where the antenna selection display only shows Ant and not Ant1 or Ant2 so I will now start looking around the KANT3.

These problems are a very good, but hard way to learn about the rig though and it is a very hard learning curve for a BOF!
Just as well I have not measured the blood pressure recently.

73s
Bob
G3REP


Re: Problem - KAT3 power drops out

Jim Miller
 

I have learned to always start with the basics. Try the fast and easy stuff first. Select and monitor the voltage display setting in the K3. Attach an external meter at the input power pole to the K33 if you can get the probes or a small wire into it or on the output of the power supply if not. Get serious on twisting and bending/pulling all the power connections. Try a different power supply. Try a different power cable. Make sure you are working on the right piece of equipment before you have a panic attack. Do the fast and easy and you will be surprised how often these types of things will find the problem. 73, Jim KG0KP

-----Original Message-----
From: Elecraft-K3@groups.io [mailto:Elecraft-K3@groups.io] On Behalf Of Bob G3REP via Groups.Io
Sent: Tuesday, June 04, 2019 2:12 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Problem - KAT3 power drops out

Following on from earlier post not so sure it is the KAT3 but could be a front panel problem as Alan G4GNX suggests could be related to the front panel, although where is not obvious.

Initially the rig powers up the screen lights up then goes black (off) and the relays can be heard dropping out. earlier when the screen was working I could spin the dial, the relays would chatter and the red Tx light below the power switch would come on momentarily. Although the 12v holds up all this time as does the 5v and 8v from the regulators U12 and U13.

Any suggestions gratefully received.
73s
Bob G3REP


Re: Power output fluctuation

Jim AC0E
 

Goat -
I've been fortunate that my K3 has given me zero problems so far....
Sorry I missed you this last trip... Was on the Dayton run...
Try the NCCC RTTY Sprint on Thursday evenings. Check out Ken, k6mr, on QRZ for details.
73
Jim AC0E

On June 4, 2019 09:58:43 "Larry" <telegrapher@q.com> wrote:

Back in April i had to go away for a while for family business. When i
left i turned off the radio (K3), unplugged the power, turned off the AC
and disconnected the antennas. Everything was shutdown or off.

When i got back in May i found that the power output on the K3, even
though it was set for 25W was showing 35 or so on the Wattmeter, a Drake
W-4. Changing bands the problem was still there. Running into a dummy
load, the same indication. I also noticed that when operating on 20M i
have some kind of tone (noise?) coming from the radio. That along with
adjusting the power knob cause a variation or fluctuation in output
power. I run mostly FT8 with CW operation when necessary. Seems like
the fluctuation of output power has occurred to another list member
previously or is that my imagination? My hearing is directional so
turning my head can eliminate noise and if it's above 1800 cycles i may
not hear it at all.

Thoughts?

Larry

W0OGH



Re: Problem - KAT3 power drops out

Bob G3REP
 

Following on from earlier post not so sure it is the KAT3 but could be a front panel problem as Alan G4GNX suggests could be related to the front panel, although where is not obvious.

Initially the rig powers up the screen lights up then goes black (off) and the relays can be heard dropping out. earlier when the screen was working I could spin the dial, the relays would chatter and the red Tx light below the power switch would come on momentarily. Although the 12v holds up all this time as does the 5v and 8v from the regulators U12 and U13.

Any suggestions gratefully received.
73s
Bob G3REP


Re: Power output fluctuation

Wes Stewart
 

Larry,

First thought is quit using FT-8 :-).  Second is to run a TX Gain cal.  I don't know the vintage of your K3 so maybe you don't have the gold-pin fix. You might try to R&R the HPA first to scrape off the crud on the pins, then do the gain cal.  Make sure your power supply isn't the culprit.

Erratic variation in power while adjusting it isn't unheard of when the control loop is trying to fix a gain problem.

Also inspect the board-mounted TMP connector sockets.  I've seem them corrode and cause head-scratching intermittent problems.  Look under my call in the group photos section to see the evidence.

Wes

On Tuesday, June 4, 2019, 7:58:41 AM MST, Larry <telegrapher@q.com> wrote:


Back in April i had to go away for a while for family business. When i
left i turned off the radio (K3), unplugged the power, turned off the AC
and disconnected the antennas.  Everything was shutdown or off.

When i got back in May i found that the power output on the K3, even
though it was set for 25W was showing 35 or so on the Wattmeter, a Drake
W-4.  Changing bands the problem was still there.  Running into a dummy
load, the same indication.  I also noticed that when operating on 20M i
have some kind of tone (noise?) coming from the radio.  That along with
adjusting the power knob cause a variation or fluctuation in output
power.  I run mostly FT8 with CW operation when necessary.  Seems like
the fluctuation of output power has occurred to another list member
previously or is that my imagination?  My hearing is directional so
turning my head can eliminate noise and if it's above 1800 cycles i may
not hear it at all.

Thoughts?

Larry

W0OGH



4101 - 4120 of 35078