Date   
K3 upgrade

Larry
 

My Old K3 is in for repair and upgrade.  I'm replacing the K3io board
with the new "B" model.  Apparently from what i read i will no longer
need the line in and line out cables.  Am i reading that correctly?  It
will then use a regular USB cable from the radio as a replacement as i
understand it.  Is there a new firmware release that will address this
or is the latest that has been published going to work?  I'm wondering
what different settings will have to be changed.  I use it mainly on CW
& FT8 modes.

larry
W0OGH

Re: K3 not operating properly

Mal
 

Check to see if you didn’t accidently change the antenna on the front panel.

 

From: Elecraft-K3@groups.io [mailto:Elecraft-K3@groups.io] On Behalf Of Bill Ellis - WB9CAC via Groups.Io
Sent: Saturday, August 25, 2018 8:46 PM
To: Elecraft K3
Cc: Elecraft K3 Group
Subject: [Elecraft-K3] K3 not operating properly

 

On receive, I hear no signals. Antenna is connected.

 

On transmit, when I key the transmitter, the s-meter goes up two bars. When I hold the key down, I get one bar in the middle of the display. 

 

 

Thanks for any help

 

73's

 

Bill Ellis, WB9CAC

K3 - help

Bill Ellis - WB9CAC
 

Can hear noise on K3, but no signals.  Antenna is connected,

When I key the transmitter, the s-meter kicks up two(2) bars and when the key is held down there is one bar in the middle of the display. Can't figure this out. 


Bill Ellis, WB9CAC

K3 not operating properly

Bill Ellis - WB9CAC
 

On receive, all I hear is noise, no signals. Antenna is connected. On  transmit when I key the transmitter, the s-meter goes up only two bars. If I bold the key down, I get one bar in the middle of the display. 

Any help is appreciated.


73

Bill Ellis, WB9CAC

K3 not operating properly

Bill Ellis - WB9CAC
 

On receive, I hear no signals. Antenna is connected.

On transmit, when I key the transmitter, the s-meter goes up two bars. When I hold the key down, I get one bar in the middle of the display. 


Thanks for any help

73's

Bill Ellis, WB9CAC

Re: Load VSWR spec for K3?

Bob McGraw - K4TAX
 

From Fred Cady's book "the K3S output will begin to cut back when SWR reaches about 2.5:1 when running 100 watts.  Higher SWRs can be tolerated at lower power."

Bob, K4TAX



On Aug 24, 2018, at 10:31 AM, Joe N9OK <n9ok@...> wrote:

I know the K3 output power is specified at 100W into 50 ohms. Am I safe running 100W into 2:1? 3:1? It would be nice to see some kind of curves showing safe output power levels into non-optimal loads.
73 Joe N9OK

Load VSWR spec for K3?

Joe N9OK
 

I know the K3 output power is specified at 100W into 50 ohms. Am I safe running 100W into 2:1? 3:1? It would be nice to see some kind of curves showing safe output power levels into non-optimal loads.
73 Joe N9OK

Re: sequence of installation

Jason ONeill <gm7vsb@...>
 

Hi Todd,

 

I recently installed a whole bundle of additions at the same time, in two identical K3s, I found myself going backwards and forwards a lot with no guidance on which order to do it.

 

I’d recommend striping it down to install the KAT3A first as it’s the most mechanical of the 3 items to install. Then prior to re-assembly add the filter, then complete the mechanical rebuild leaving out the stiffener and 2nd RX until the end if you have it, then add the KXV3B.

 

  • Disassemble per KAT3A instructions
  • Add KAT3A
  • Add Filter
  • Partial assemble leaving out 2nd RX and Chassis Stiffener
  • Add KXV3B
  • Finish reassembly

 

Regards

Jason

GM7VSB

Re: sequence of installation

Jim - WS6X
 

Elecrafters
I am installing a KAT3, KXVB3 and a 1.8 kHz roofing filter. Can anyone suggest what to install 1st, 2nd and 3rd?
tnx
todd
WB2ZAB

 

>>>> 

Hi Todd,

Unless you are concerned about verifying correct function of each module individually, I’d install all three while the radio is belly up on the operating table. In any case, I can’t see any reason for a particular order of installation.

GL es 73,

Jim – WS6X  

Re: sequence of installation

Charles N2SO
 

Hi Todd,

Once you have the top off, it's pretty easy to see what you have access to. Each instruction manual will tell you what if anything you have to move out of the way. I have done several installations and found them to be mostly straightforward with little guess work. Dig in and enjoy!


On Wed, Aug 22, 2018 at 4:06 PM todd ruby <todd@...> wrote:
Elecrafters
I am installing a KAT3, KXVB3 and a 1.8 kHz roofing filter. Can anyone suggest what to install 1st, 2nd and 3rd?

tnx

todd
WB2ZAB



--
73, Charles N2SO
 Treasurer, Quarter Century Wireless Association, Inc.

Re: K3/WSJTX

Bob Patten
 

On 8/21/2018 5:41 PM, harry latterman via Groups.Io wrote:
I don't have microkeyer...Sorry, however I have run WSJT-X and FlDigi for years with just two cheap stereo jumper cables that are sold atmany places for cheap.  Computer MIC to LIne OUT. and Headphone OUTPUT at the computer to Line IN.  The K3 is buffered and that is all you need to run any and all digital modes...Hope that info helps for now so you can run WSJT-X until you can figure out how to get the more complicated MicroKeyer working
Same basic setup here with the K3. Can't beat the simplicity and the cost of the interface - two shielded audio cables.

--
73, Bob Patten, N4BP Plantation, FL

E-Mail : n4bp@... Website: http://www.qsl.net/n4bp
SOC #1 ARS #799 QRP ARCI #3412 FISTS #7871
FP #1491 10-10 #3268 SMIRK #6625

sequence of installation

todd ruby
 

Elecrafters
I am installing a KAT3, KXVB3 and a 1.8 kHz roofing filter. Can anyone suggest what to install 1st, 2nd and 3rd?

tnx

todd
WB2ZAB

Re: K3/WSJTX

KE1F Lou
 

Thanks Joe.
Lou



Sent from my Galaxy Tab® A

-------- Original message --------
From: "Joe Subich, W4TV" <lists@...>
Date: 8/21/18 6:35 PM (GMT-05:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] K3/WSJTX


Simply follow the instructions in the K3 Users Manual for audio based
data modes.

set Mode = DATA | Submode = DATA A
Select MENU:MIC SEL = LINE IN
Select MENU:MIC+LIN = OFF
Set MIC GAIN = 20

Perform the "Setting Audio Level" procedure in the microKEYER II
Users Manual *EXACTLY AS WRITTEN*.  Do not proceed from one step
to the next step until you achieve the results called out in the
procedure.

73,

    ... Joe, W4TV


On 2018-08-21 5:00 PM, KE1F Lou wrote:
> I have a k3 line and using it with microKeyerII.
> I followed the set up on microKeyer website for WSJT-X.
> I can copy but I can't transmit.
> Is there anybody on this site who is using the same hardware and willing
> to share the setting?
> I would greatly appreciate it.
> My direct e-mail:  KE1F@...
> Lou KE1F.
>
>





Re: K3/WSJTX

Joe Subich, W4TV
 

Simply follow the instructions in the K3 Users Manual for audio based
data modes.

set Mode = DATA | Submode = DATA A
Select MENU:MIC SEL = LINE IN
Select MENU:MIC+LIN = OFF
Set MIC GAIN = 20

Perform the "Setting Audio Level" procedure in the microKEYER II
Users Manual *EXACTLY AS WRITTEN*. Do not proceed from one step
to the next step until you achieve the results called out in the
procedure.

73,

... Joe, W4TV

On 2018-08-21 5:00 PM, KE1F Lou wrote:
I have a k3 line and using it with microKeyerII.
I followed the set up on microKeyer website for WSJT-X.
I can copy but I can't transmit.
Is there anybody on this site who is using the same hardware and willing to share the setting?
I would greatly appreciate it.
My direct e-mail:  KE1F@...
Lou KE1F.

Re: K3/WSJTX

KE1F Lou
 

Thanks Harry, I will try it.
Lou



Sent from my Galaxy Tab® A

-------- Original message --------
From: "harry latterman via Groups.Io" <harrylatterman@...>
Date: 8/21/18 5:41 PM (GMT-05:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] K3/WSJTX

I don't have microkeyer...Sorry, however I have run WSJT-X and FlDigi for years with just two cheap stereo jumper cables that are sold atmany places for cheap.  Computer MIC to LIne OUT. and Headphone OUTPUT at the computer to Line IN.  The K3 is buffered and that is all you need to run any and all digital modes...Hope that info helps for now so you can run WSJT-X until you can figure out how to get the more complicated MicroKeyer working

73 Harry K7ZOV


On Tuesday, August 21, 2018, 2:00:53 PM MST, KE1F Lou <lmecseri@...> wrote:


I have a k3 line and using it with microKeyerII.
I followed the set up on microKeyer website for WSJT-X.
I can copy but I can't transmit.
Is there anybody on this site who is using the same hardware and willing
to share the setting?
I would greatly appreciate it.
My direct e-mail:  KE1F@...
Lou KE1F.





Re: K3/WSJTX

harry latterman <harrylatterman@...>
 

I don't have microkeyer...Sorry, however I have run WSJT-X and FlDigi for years with just two cheap stereo jumper cables that are sold atmany places for cheap.  Computer MIC to LIne OUT. and Headphone OUTPUT at the computer to Line IN.  The K3 is buffered and that is all you need to run any and all digital modes...Hope that info helps for now so you can run WSJT-X until you can figure out how to get the more complicated MicroKeyer working

73 Harry K7ZOV


On Tuesday, August 21, 2018, 2:00:53 PM MST, KE1F Lou <lmecseri@...> wrote:


I have a k3 line and using it with microKeyerII.
I followed the set up on microKeyer website for WSJT-X.
I can copy but I can't transmit.
Is there anybody on this site who is using the same hardware and willing
to share the setting?
I would greatly appreciate it.
My direct e-mail:  KE1F@...
Lou KE1F.





K3/WSJTX

KE1F Lou
 

I have a k3 line and using it with microKeyerII.
I followed the set up on microKeyer website for WSJT-X.
I can copy but I can't transmit.
Is there anybody on this site who is using the same hardware and willing to share the setting?
I would greatly appreciate it.
My direct e-mail: KE1F@...
Lou KE1F.

Re: KAT3A

 

Yes. It should be there, but I'll check.

tnx
Wayne
N6KR

On Aug 20, 2018, at 8:32 AM, todd ruby <todd@...> wrote:

Is it still possible to buy a KAT3A from Elecraft? I do not see it listed for sale on the website. Maybe I'm missing it?

tnx

todd
WB2ZAB

KAT3A

todd ruby
 

Is it still possible to buy a KAT3A from Elecraft? I do not see it listed for sale on the website. Maybe I'm missing it?

tnx

todd
WB2ZAB

Re: KPA-1500 sonics

 

Note that at this power level, especially in locations with high ambient temperatures, you don't just have to cool the heat sink -- you also have to cool the components on the PC board. This is why the KPA1500's fans blow about 25% of their air through the area below the heat sink. It's also the reason you can't just put a supplemental fan on the top side. That keeps the heat sink cool, but delays onset of the amp's own fans, thus allowing everything besides the PA devices to get too hot.

While the idea of liquid cooling is indeed cool, it would not eliminate the need for fans.

Wayne
N6KR

On Aug 19, 2018, at 3:20 PM, Mike via Groups.Io <prcradio=yahoo.com@groups.io> wrote:

[Edited Message Follows]

Its not a big deal to liquid cool an amp using the same little radiators and muffin fans in gaming PCs. Here is an amplifier using a pair of similar transistors as the KPA1500 and its water cooled and quiet putting out 2400w. I've built a single transistor version of Victor's (R3KR) amp with a large tunnel type heatsink/fan and I'm considering building a dual transistor liquid cooled version similar to this video. https://www.youtube.com/watch?v=fVJVmm1R-fE

As Victor explained at Dayton a few years back, there is a reason cars are water cooled after a certain displacement as the cylinder fins would be enormous on a 5.7L air cooled gas engine.
Mike