1. Elecraft-K3@groups.io
   Date   
Re: Elecraft K3S (RJ45) and SPE Expert PA

OZ0J Joe
 

John

 

Thanks for the reply.

 

It is the K3S end, I am not sure what to do.

I did find a RS232 -> RJ45 cable for my K3S, so I expect that I can use that.

 

- Joe OZ0J

 

 

Fra: Elecraft-K3@groups.io <Elecraft-K3@groups.io> På vegne af john ni0k
Sendt: 16. marts 2019 03:11
Til: Elecraft-K3@groups.io
Emne: Re: [Elecraft-K3] Elecraft K3S (RJ45) and SPE Expert PA

 

You have to use the DB15 acc jack.

-John NI0K


Friday, March 15, 2019 3:15 PM

Hi

 

 

I do have an Elecraft K3S with a RJ45 plug for the RS232.

 

I would like to connect my SPE Expert 1,3K FA so the K3S sends band data to the Expert PA.

 

I will connect the K3S to my laptop via the USB cable.

 

If it is possible, how do I connect to the SPE Expert PA to send band data to the SPE PA?

 

 

73, Joe OZ0J

 

 

 

 
Re: Remote On/Off KPA1500

Rick Tavan
 

KPA1500 Remote will indeed turn the amp on and off. Yes, it takes some screen space but that is well worth it to avoid “flying blind” running 1500 watts with no indication of what’s going on except transient fault and warning messages in the K3 VFO B area that you may not be watching full time! Or completely blind if you’re not using a K3. I need a secondary monitor to run N1MM logger anyway, so there’s plenty of room for KPA Remote.

73,

Rick N6XI
--
--

Rick Tavan
Truckee, CA
Re: Remote On/Off KPA1500

Bob Patten
 

There are times I prefer to operate without the amp when operating remote. Since my eight channel relay switcher can accommodate the function, makes sense to me to use it for powering the amp on/off independent of the K3. If I used the K3's 12V jack, then I would have to use the KPA1500 Remote software to switch between OPER/STBY. Why make it more complicated than it needs to be?

On 3/15/2019 9:40 AM, Jerry wrote:
Bob,
Use the 12v switched 1.0A Max RCA phono jack on the back of the K3
and connect it to the Rem phono jack on the KPA1500. You will need a
male - male cable. With this setup, whenever you turn on or off the
K3, the KPA-1500 will follow suit. Look at the last paragraph on page
19 of the 1500 manual. It describes the operation better
Best regards,
Jerry, W1IE
-----Original Message----- From: Elecraft-K3@groups.io
<Elecraft-K3@groups.io> On Behalf Of Bob Patten Sent: Friday, March
15, 2019 06:30 AM To: Elecraft-K3@groups.io Subject: Re:
[Elecraft-K3] Remote On/Off KPA1500
On 3/14/2019 9:11 PM, Charlie Wirth wrote:
I was wondering what others are using to apply 12 volts to the REM jack for remote on/off operation.
I use a Velleman K8090 relay controller to switch the amp on/off. TeamViewer and N-Button Lite for remote control.
--
73, Bob Patten, N4BP Plantation, FL

E-Mail : n4bp@arrl.net Website: http://www.qsl.net/n4bp
SOC #1 ARS #799 QRP ARCI #3412 FISTS #7871
FP #1491 10-10 #3268 SMIRK #6625
Re: Elecraft K3S (RJ45) and SPE Expert PA

john ni0k
 

You have to use the DB15 acc jack.

-John NI0K

Friday, March 15, 2019 3:15 PM

Hi

 

 

I do have an Elecraft K3S with a RJ45 plug for the RS232.

 

I would like to connect my SPE Expert 1,3K FA so the K3S sends band data to the Expert PA.

 

I will connect the K3S to my laptop via the USB cable.

 

If it is possible, how do I connect to the SPE Expert PA to send band data to the SPE PA?

 

 

73, Joe OZ0J

 

 

 
Re: Remote On/Off KPA1500

Paul K9NU
 

Using the USB connection, you can turn the KPA1500 off and on as well has control most functions. Used it over the last 6 weeks running remote from Florida back to my station in Illinois. Haven't played with the Ethernet connection yet.

73,
Paul K9NU
Elecraft K3S (RJ45) and SPE Expert PA

OZ0J Joe
 

Hi

 

 

I do have an Elecraft K3S with a RJ45 plug for the RS232.

 

I would like to connect my SPE Expert 1,3K FA so the K3S sends band data to the Expert PA.

 

I will connect the K3S to my laptop via the USB cable.

 

If it is possible, how do I connect to the SPE Expert PA to send band data to the SPE PA?

 

 

73, Joe OZ0J

 

 

 
Re: Remote On/Off KPA1500

Jerry
 

Bob,

Use the 12v switched 1.0A Max RCA phono jack on the back of the K3 and connect it to the Rem phono jack on the KPA1500. You will need a male - male cable. With this setup, whenever you turn on or off the K3, the KPA-1500 will follow suit. Look at the last paragraph on page 19 of the 1500 manual. It describes the operation better

Best regards,

Jerry, W1IE

-----Original Message-----
From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Bob Patten
Sent: Friday, March 15, 2019 06:30 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Remote On/Off KPA1500

On 3/14/2019 9:11 PM, Charlie Wirth wrote:
I was wondering what others are using to apply 12 volts to the REM
jack for remote on/off operation.
I use a Velleman K8090 relay controller to switch the amp on/off.
TeamViewer and N-Button Lite for remote control.

--
73, Bob Patten, N4BP Plantation, FL

E-Mail : n4bp@arrl.net Website: http://www.qsl.net/n4bp
SOC #1 ARS #799 QRP ARCI #3412 FISTS #7871
FP #1491 10-10 #3268 SMIRK #6625
Re: Remote On/Off KPA1500

Charlie Wirth
 

As far as I understand it the remote software will not turn on the amplifier.  I am not using a K3 therefore I cannot use the 12v jack to connect to the remote jack on the 1500.

What I thought I would do is use a 12vdc, 500mA wall wart connected to a web enabled power strip.  I can use the remote software once the amp is powered up.

Charlie W3DDF

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> on behalf of Paul K9NU <k9nu@...>
Sent: Friday, March 15, 2019 7:59 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Remote On/Off KPA1500
 
I must be missing something here. Why not use the Elecraft KPA1500 remote software?

73 Paul K9NU

OT: For sale Elecraft P3, P3TXMON & DCHF-2000

Keith KV5J
 

Elecraft P3, P3TXMON & DCHF-2000 
Excellent condition.
Elecraft has this listed at $1022.90 plus shipping.
Selling for $725 with free shipping.
Cleared check or MO. Can take PayPal if you want to pay.

73

Keith, KV5J
Re: Remote On/Off KPA1500

Bob Patten
 

On 3/15/2019 7:59 AM, Paul K9NU wrote:
I must be missing something here. Why not use the Elecraft KPA1500 remote software?
In my case: The K8090 has eight channels, one to switch on the K3, one for the KPA1500, and six for antenna switching. Don't need the Elecraft Remote software taking up more screen space.

--
73, Bob Patten, N4BP Plantation, FL

E-Mail : n4bp@arrl.net Website: http://www.qsl.net/n4bp
SOC #1 ARS #799 QRP ARCI #3412 FISTS #7871
FP #1491 10-10 #3268 SMIRK #6625
Re: Remote On/Off KPA1500

Paul K9NU
 

I must be missing something here. Why not use the Elecraft KPA1500 remote software?

73 Paul K9NU
Re: Remote On/Off KPA1500

Bob Patten
 

On 3/14/2019 9:11 PM, Charlie Wirth wrote:
I was wondering what others are using to apply 12 volts to the REM jack for remote on/off operation.
I use a Velleman K8090 relay controller to switch the amp on/off.
TeamViewer and N-Button Lite for remote control.

--
73, Bob Patten, N4BP Plantation, FL

E-Mail : n4bp@arrl.net Website: http://www.qsl.net/n4bp
SOC #1 ARS #799 QRP ARCI #3412 FISTS #7871
FP #1491 10-10 #3268 SMIRK #6625
Remote On/Off KPA1500

Charlie Wirth
 

I was wondering what others are using to apply 12 volts to the REM jack for remote on/off operation. 

Thanks,

Charlie W3DDF
Re: WTB: KPA500 KAT500

southdaleus
 

Lou, 

If you get too many offers send over a few to me as I am also looking for another KPA500.  

I have one already, they are a great amp….

Dale, K9VUJ



On 13, Mar 2019, at 7:14, Lou Laderman W0FK <lladerman@...> wrote:

I’m looking for a KPA500 and KAT500 combo. Please contact me off the group at lladerman AT EarthLink DOT net if you have a set to sell. 

73, Lou, W0FK 

Re: George Dobbs, G3RJV (SK)

g4abx
 

George was one of the reasons I even tried QRP -- and now thats mostly the way I operate.
He will be missed by many.
May he rest in peace.

73
Bruce G4ABX
Audio Logic Issue

Bud Trench
 

I have been using the rear panel PHONES jack to feed audio from my K3S to the mk2R+ I use in my SO2R configuration.  Several days ago, I started to only hear audio in the left side of the headphones connected to the mk2R+ and the right-side audio was heard from the K3S speaker.

 

My configuration settings are as follows:

 

SPKRS = 1

SPKR+PH = NO

SPKR+PH Secondary function = PH.R SW--

 

I did some troubleshooting and here is what I observe:

 

  • When I plug my headphones into the front panel of the K3S, I hear audio on both channels and the K3S speaker is muted.

 

  • When I plug my headphones into the K3S PHONES rear panel connector, I only hear audio on the left side.  Right side audio is heard from the K3S speaker.

 

  • When I plug my headphones into the K3S SPEAKERS rear panel connector, I only hear audio on the left side.  The K3S speaker is muted.

 

  • The final observation is that if I set the SPRK+PH secondary function to PH.R SW+, I get the proper audio on both sides from the K3S PHONES rear panel connector.  However, the K3S speaker does not work when I unplug the headphones from the K3S PHONES rear panel connector.   The description of the SPKR+PH secondary function in the CONFIG Menu section of the manual leads me to believe that the SPRK+PH secondary function should be set to PH.R SW—, so I don’t understand this behavior.

 

I suspect a misconfiguration or failure of the KI03B audio board.  Any advice?

 

Bud, AA3B

 
Looking to purchase a KPA3 100W PA assembly

Bob Marchese
 

My K3 (Ser. #  01755) is currently running QRP and I would like to upgrade it to 100 Watts.  If you currently have a KPA3 assembly that you would like to part with I can be reached at k1nok@... .
Thank you,
 
Bob, K1NOK
George Dobbs, G3RJV (SK)

Jim Stafford W4QO
 

FYI.  Huge loss to amateur radio!
 
From Southgate News:
 
Rev. George Dobbs G3RJV Silent Key

We have just heard that the Rev. George Dobbs, G3RJV died early
today from pneumonia that wouldn’t respond to antibiotics.

de Jim/W4QO
Re: Sub RX Failure or some config change I haven't figured out yet?

John K3TN
 

The denouement: After trying every possible configuration setting and conferring with Rob of Elecraft support over email, the conclusion was there must be a hardware failure. Local PVRCer Rick N1RM has retired and started up a repair business and he said to bring the K3 down and we could start tracing some signal paths.

Connected the K3 to his power supply and signal analyzer, pure tone comes out the speaker. To check the sub RX plug in Rick's headphones - and the second channel of audio works fine! Turns out there was a hardware failure, just not in the K3 - the 1/4" phono plug on my Shure headphones had solder connection that had gone bad - the one thing I hadn't tried was swapping out headphones!

Kinda reminded me of the old Steve Martin routine of spending thousands to fix bad sound in his stereo and then finding out it was the 89 cent needle on his record player... (younger hams can Google "needle" and "record player" - maybe even "stereo")

So, no fault in the K3 and thanks to Rob for all the time he spent suggesting diagnostic paths.

73 John K3TN
Re: K3 BCB Harmonics When Power is 12W or Less

Ray Maxfield
 

I would try a Hi-Pass filter Tuned for 1650 Khz.
I looked at the Local B-Cast band stations in your area.
the Highest in the band I see is 1570 Khz.
Up 80 kc should help with Attenuation on the Lo side
and have less effect on the Low end of 160 meters.
Here is a Web page with an Design App to Help
with a Butterworth Pi Hi-Pass.  73
 
 
  de WA6VAB  - Ray
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