Date   

For Sale are 73CNC weighted tuning knobs for K3, or K3S.

Everett N4CY
 

For Sale are a set of two weighted tuning knobs for K3, or K3S. One is for the main VFO and the other smaller one is for VFO B. This upgrade will allow for smother tuning on your K3, or K3S.

These are the Knobs offered by 73CNC and are $165 for the pair+ shipping. 
http://www.dtsohio.com/73cnc/elecraft-k3-black.html

Both knobs are in like new condition and I am asking $100 for the pair, which includes shipping and I will accept PayPal. If interested please contact me off list at everettsharp@...

Everett N4CY


For Sale Elecraft K3S SOLD

Everett N4CY
 

The K3S is sold....

Everett N4CY


For Sale is an Elecraft K3S/100-F Factory Built SN-10484. It comes with the standard 2.7kHz Filter, original instruction manual, USB, RJ-45 to RS232 and power cables.

Options Below:

KAT3A-F ATU

KBPF3A GEN. COV MODULE

KFL3-6K 6 kHz 8 POLE FILTER

KFL3-2.1K 8 POLE FILTER

MH4 Hand Mike

Fred Candy K3S Book


This K3S is in excellent condition and there are no scratches. I bought it new 12/1/15 and it has been only casually used, primarily on digital. The K3S has been updated to the current firmware. I have gone through and checked the receiver sensitivity, using the Elecraft XG3 RF Signal Source and I have also checked the power output on all bands and all looks to be normal. I did check with Elecraft technical support to see if there were any current mods, or updates and was told there were none.

Asking price is $2750, which includes shipping to anywhere in the lower 48 states. I do have the original shipping box, which will be used to ship the K3S.

If interested in buying the K3S please contact me off list at everettsharp@.... Also if there are questions and a potential buyer would like to discuss on phone please first contact me by email and I will pass along my phone number.

Everett N4CY


Re: For Sale Elecraft K3S

Larry
 

Ok.  Thanks Ev.

Larry

W0OGH

On 6/28/2019 3:12 PM, Everett N4CY via Groups.Io wrote:
Larry,

I have a KPA500 and KAT500, which are used when running digital, so K3S typical ran 10 to 20 watts depending on band and power needed to complete contact. 

Everett N4CY

On Jun 28, 2019, at 4:07 PM, Larry <telegrapher@q.com> wrote:

What kind of power did you run the radio at when using digital.

Larry

W0OGH

On 6/28/2019 6:13 AM, Everett N4CY via Groups.Io wrote:
For Sale is an Elecraft K3S/100-F Factory Built SN-10484. It comes with the standard 2.7kHz Filter, original instruction manual, USB, RJ-45 to RS232 and power cables.

Options Below:

KAT3A-F ATU

KBPF3A GEN. COV MODULE

KFL3-6K 6 kHz 8 POLE FILTER

KFL3-2.1K 8 POLE FILTER

MH4 Hand Mike

Fred Candy K3S Book


This K3S is in excellent condition and there are no scratches. I bought it new 12/1/15 and it has been only casually used, primarily on digital. The K3S has been updated to the current firmware. I have gone through and checked the receiver sensitivity, using the Elecraft XG3 RF Signal Source and I have also checked the power output on all bands and all looks to be normal. I did check with Elecraft technical support to see if there were any current mods, or updates and was told there were none.

Asking price is $2750, which includes shipping to anywhere in the lower 48 states. I do have the original shipping box, which will be used to ship the K3S.

If interested in buying the K3S please contact me off list at everettsharp@.... Also if there are questions and a potential buyer would like to discuss on phone please first contact me by email and I will pass along my phone number.

Everett N4CY


Re: For Sale Elecraft K3S

Everett N4CY
 

Larry,

I have a KPA500 and KAT500, which are used when running digital, so K3S typical ran 10 to 20 watts depending on band and power needed to complete contact. 

Everett N4CY

On Jun 28, 2019, at 4:07 PM, Larry <telegrapher@q.com> wrote:

What kind of power did you run the radio at when using digital.

Larry

W0OGH

On 6/28/2019 6:13 AM, Everett N4CY via Groups.Io wrote:
For Sale is an Elecraft K3S/100-F Factory Built SN-10484. It comes with the standard 2.7kHz Filter, original instruction manual, USB, RJ-45 to RS232 and power cables.

Options Below:

KAT3A-F ATU

KBPF3A GEN. COV MODULE

KFL3-6K 6 kHz 8 POLE FILTER

KFL3-2.1K 8 POLE FILTER

MH4 Hand Mike

Fred Candy K3S Book


This K3S is in excellent condition and there are no scratches. I bought it new 12/1/15 and it has been only casually used, primarily on digital. The K3S has been updated to the current firmware. I have gone through and checked the receiver sensitivity, using the Elecraft XG3 RF Signal Source and I have also checked the power output on all bands and all looks to be normal. I did check with Elecraft technical support to see if there were any current mods, or updates and was told there were none.

Asking price is $2750, which includes shipping to anywhere in the lower 48 states. I do have the original shipping box, which will be used to ship the K3S.

If interested in buying the K3S please contact me off list at everettsharp@.... Also if there are questions and a potential buyer would like to discuss on phone please first contact me by email and I will pass along my phone number.

Everett N4CY


Re: For Sale Elecraft K3S

Larry
 

What kind of power did you run the radio at when using digital.

Larry

W0OGH

On 6/28/2019 6:13 AM, Everett N4CY via Groups.Io wrote:
For Sale is an Elecraft K3S/100-F Factory Built SN-10484. It comes with the standard 2.7kHz Filter, original instruction manual, USB, RJ-45 to RS232 and power cables.

Options Below:

KAT3A-F ATU

KBPF3A GEN. COV MODULE

KFL3-6K 6 kHz 8 POLE FILTER

KFL3-2.1K 8 POLE FILTER

MH4 Hand Mike

Fred Candy K3S Book


This K3S is in excellent condition and there are no scratches. I bought it new 12/1/15 and it has been only casually used, primarily on digital. The K3S has been updated to the current firmware. I have gone through and checked the receiver sensitivity, using the Elecraft XG3 RF Signal Source and I have also checked the power output on all bands and all looks to be normal. I did check with Elecraft technical support to see if there were any current mods, or updates and was told there were none.

Asking price is $2750, which includes shipping to anywhere in the lower 48 states. I do have the original shipping box, which will be used to ship the K3S.

If interested in buying the K3S please contact me off list at everettsharp@.... Also if there are questions and a potential buyer would like to discuss on phone please first contact me by email and I will pass along my phone number.

Everett N4CY


KX3 FS

Larry
 

I bought a brand new KX3 while at the Visalia DX Convention back in
April.  The box it came is is still sitting here.  It is a factory built
unit unit and is configured as follows:

KX3-F 160-6M Transceiver

KXAT3-F Internal 20W ATU

KXBC3-F Internal NiMH charger with real time clock

MH3 Hand Mic

ES80 Carrying case

I just bought NiMH batteries a week ago.  It appears to perform as the
factory specs indicate.  I have put a couple of frequencies into memory
and done a lot of listening with it.  Not one second of transmit time
though.  I use my K3 relentlessly so i have put the KX3 into it's
carrying case and set it up on the shelf.  The batteries should be fully
charged so take it out of the Box/case and fire it up.  It also comes
with the DC power cord and the KXUSB  cable.

Not sure what shipping costs would be, cheaper with out the box for sure
but not as safe.   Nice little radio and would be great as a WSPR unit.
Immaculate and un-marked in any way.

$1400 plus shipping

Larry

W0OGH


For Sale Elecraft K3S

Everett N4CY
 

For Sale is an Elecraft K3S/100-F Factory Built SN-10484. It comes with the standard 2.7kHz Filter, original instruction manual, USB, RJ-45 to RS232 and power cables.

Options Below:

KAT3A-F ATU

KBPF3A GEN. COV MODULE

KFL3-6K 6 kHz 8 POLE FILTER

KFL3-2.1K 8 POLE FILTER

MH4 Hand Mike

Fred Candy K3S Book


This K3S is in excellent condition and there are no scratches. I bought it new 12/1/15 and it has been only casually used, primarily on digital. The K3S has been updated to the current firmware. I have gone through and checked the receiver sensitivity, using the Elecraft XG3 RF Signal Source and I have also checked the power output on all bands and all looks to be normal. I did check with Elecraft technical support to see if there were any current mods, or updates and was told there were none.

Asking price is $2750, which includes shipping to anywhere in the lower 48 states. I do have the original shipping box, which will be used to ship the K3S.

If interested in buying the K3S please contact me off list at everettsharp@.... Also if there are questions and a potential buyer would like to discuss on phone please first contact me by email and I will pass along my phone number.

Everett N4CY


ERR PLL2 message

Paul Booth
 

Hi all.  Hopefully someone can point me in the direction of where to look on my K3 with sub receiver.

1.        On power up I get ERR PLL2 message.

2.       Followed the troubleshooting guide and in CONFIG:VCO MD I went to calibrate option and get the following errors:

a.       ERR VCO  E 00005

b.      ERR VC4   E 00255

3.       I haven’t taken the next step switch with the sub synths yet.  Would this be the right step?  Anywhere else I should look?  Thanks.

 

Regards,

 

Paul, W6IBU


Re: VGA Capture Card with a P3

David Box
 

Mike I use DXLab also and Win4K3Suite, works really well together. The panadaptor feature in Win4K is nice. Using com0com to set the ports up and run DxCommander, Keeper, WSJT-X and an SDRPlay for panadaptor. Makes a nice setup.
Dave K5MWR


On June 21, 2019 8:37:22 AM CDT, Mike Flowers <mike.flowers@...> wrote:

Thank you, Bill.  I’ll check this out.

 

I’ a DXLab user, so I’m hoping for a compatible solution.

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of bill steffey NY9H
Sent: Friday, June 21, 2019 6:20 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] VGA Capture Card with a P3

 

TOM  AT    VA2FSQ    WIN4K3 SOFTWARE accommodates a  pc video IN card for the svga out from the P3 ...

avermedia  I think ./..

bill

On 6/20/2019 3:11 PM, Mike Flowers wrote:

Hi Gang,

 

Is anyone out there using a SVGA capture card/device to capture the SVGA from the P3 and present the display in a Windows 10 window?

 

I’ve got two large monitors with loads of screen real estate, and I’d like to eliminate the separate SVGA monitor attached to the

 

All guidance and suggestions will be much appreciated!

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 


--
Sent from my Android device with K-9 Mail. Please excuse my brevity.


Re: VGA Capture Card with a P3

Mike Flowers
 

Thank you, Bill.  I’ll check this out.

 

I’ a DXLab user, so I’m hoping for a compatible solution.

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of bill steffey NY9H
Sent: Friday, June 21, 2019 6:20 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] VGA Capture Card with a P3

 

TOM  AT    VA2FSQ    WIN4K3 SOFTWARE accommodates a  pc video IN card for the svga out from the P3 ...

avermedia  I think ./..

bill

On 6/20/2019 3:11 PM, Mike Flowers wrote:

Hi Gang,

 

Is anyone out there using a SVGA capture card/device to capture the SVGA from the P3 and present the display in a Windows 10 window?

 

I’ve got two large monitors with loads of screen real estate, and I’d like to eliminate the separate SVGA monitor attached to the

 

All guidance and suggestions will be much appreciated!

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 


Re: VGA Capture Card with a P3

bill steffey NY9H
 

TOM  AT    VA2FSQ    WIN4K3 SOFTWARE accommodates a  pc video IN card for the svga out from the P3 ...

avermedia  I think ./..

bill

On 6/20/2019 3:11 PM, Mike Flowers wrote:

Hi Gang,

 

Is anyone out there using a SVGA capture card/device to capture the SVGA from the P3 and present the display in a Windows 10 window?

 

I’ve got two large monitors with loads of screen real estate, and I’d like to eliminate the separate SVGA monitor attached to the

 

All guidance and suggestions will be much appreciated!

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 


Looking for a few options for my K3

kg9hfrank@gmail.com
 

Hi and good day all, hope I can post this here, de Frank KG9H

I am looking for the following for my K3

KBPF3 general coverage receiver bandpass module

KFL3B-FM-IR_13 kHz

KFL3A-1.0K-IR_1kHZ Filter for the K3/K3S (CW/DATA)


VGA Capture Card with a P3

Mike Flowers
 

Hi Gang,

 

Is anyone out there using a SVGA capture card/device to capture the SVGA from the P3 and present the display in a Windows 10 window?

 

I’ve got two large monitors with loads of screen real estate, and I’d like to eliminate the separate SVGA monitor attached to the P3.

 

All guidance and suggestions will be much appreciated!

 

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

 


Re: KAT500 AMP Key Interrupt Setting

Irwin Darack
 

Everyone Thanks for your responses.

Do you check the Amp Key Interrupt box in the KAT500 utility software or does this occur automatically when using the Elecraft recommended set up with an Icom 7300, KPA500 & KAT500?

My set up is:
Icom 7300 Tuner Control Plug to power and Tune KAT500.
ACC line from Icom 7300 to KAT500 PTT relay, RCA connection from KAT500 to KPA500 PA Key Plug.

Thanks, Irwin KD3TB 
--
Irwin KD3TB


P3TXMON Switch

Mark Erbaugh
 

I have a 200 W and a 2 KW sensor for my P3TXMON. I understand that I can use a manual RJ45 switch to switch between them. I contacted Elecraft support and they thought that it would work, but the one concern was if the switch would short out the power leads while switching, it could damage the P3TXMON.

I ordered a Cabelara 4 port switch from Amazon.

https://www.amazon.com/gp/product/B01648J80O/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

Does anyone know if this switch will work?

73,
Mark, N8ME


Re: KAT500 AMP Key Interrupt Setting

Rick NK7I
 

We're doing the same things (saying it a little differently); getting the same consistent results, except I take a peek at the KPA SWR readings when it steps back online (or hit TUNE again), before full power to confirm it's presented with what the KAT says it is.  So far, it's not been an issue with all Elecraft from mic to antenna, but previous other brand gear with low power 'perfect' SWR resulted in an immediate fault of high SWR; so I add the middle step.

The other (LDG) gear allowed me to experience the cost of blown KPA finals and a replaced KPA input circuit (pre-KAT days).  A lesson hard earned.  So I'm cautious.  I guess it was a fair trade injury, the KPA burned a hole through the circuit board of the tuner (QUITE the stench).

Rick nhc

On 6/19/2019 4:16 PM, Bob McGraw - K4TAX wrote:

In follow up to the question, I just checked my station configuration.  The KPA500 was in OPER mode, I activated the TUNE mode on my K3S, and then pressed the TUNE button on the KAT500.   Immediately the KPA500 switched off line, the KAT500 executed the routine to match the antenna and when completed the KPA500 came back on line.   I then pressed the TUNE button on my K3S to exit the tune mode. 

I saw no issues with the procedure or method. 

73

Bob, K4TAX


On 6/19/2019 4:01 PM, Rick WA6NHC wrote:
I use a K3, KAT500 and KPA500 currently.  The KPA is locked out during a KAT500 tune cycle.  Once that cycle is over, I hit the TUNE button again on the K3 to observe/confirm that the resulting tune is correct (watch the amp LEDs for SWR), THEN feel safe enough to run QRO. 

That intermediate step performs the verification at <200 watts.  It’s good to check with a bit more power as some matches vary on non-resonant antennas; what appears ‘good’ at 20 watts may be different at high power (also motivation to improve the antenna). 

A K3(S) key line lockout during tune isn’t needed but operational thinking changes may be.   In other words, Elecraft isn’t just another company, they thought it through and did it right. 

Rick WA6NHC

Smell Czech correction happens 

On Jun 19, 2019, at 11:32 AM, Michael Kopec via Groups.Io <michaelkopec1@...> wrote:

Thanks Bob (K4TAX).  I wonder why Elecraft never thought about this.  Any way I am operating the same way as u posted.  de Mike K8NS

On Wednesday, June 19, 2019, 10:39:09 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


I am not aware of any K3S menu value that will disable the PTT line to the amp when TUNE is active with the K3S. 

In my case, when I need to tune, I do so manually.  Thus when changing bands I have the amp set to automatically go to STBY.  Then I can use TUNE at the preset tune power value.  Once tuning has resolved a match, I then place the amp in OPER mode.

With each of my 3 antennas, I have trained the KAT500 to resolve a match for different frequencies.  For 160M it is trained every 25 kHz.  For other bands every 50 kHz.  With this method I can change frequencies via the K3S and bands and always have a matched condition.  Therefore I find no need to activate TUNE or place the amp in STBY when changing bands or frequencies.

73

Bob, K4TAX


On 6/19/2019 8:39 AM, Michael Kopec via Groups.Io wrote:
Bob K4TAX, is there any menu setting in the K3s that will break the key line to the KPA500 amplifier when the K3s TUNE button is engaged.  I do not hve a KAT5oo tuner but use a manual tuner and also a LDG AT-600 pro 11 auto tuner.  Now I hve to turn the amp to standby before tuning at low power as set in the K3s.  de Mike K8NS

On Wednesday, June 19, 2019, 09:16:25 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


The KAT500 interrupts the amplifier key line (sometimes called "PTT") during tuning. This is done to avoid damaging KAT500 relays by "hot switching" at high power and to protect your amplifier from wide SWR swings during the tuning process.

Some linear amplifiers, including the Elecraft KPA500, use solid state switching devices, and the amplifier key line may be interrupted at any time, even while transmitting at full power. For these amplifiers, set "Amplifier Key Interrupt Power" to its maximum value of 1500 watts, even if the amplifier cannot produce that power level. KAT500 firmware interprets 1500 as "unlimited". The KPA500 works much more smoothly if Amplifier Key Interrupt Power is set to 1500.


Other linear amplifiers use frame or vacuum relays, and often should not have their Transmit/Receive relay "hot switched" at high power. For these amplifiers, set the "Amplifier Key Interrupt Power" to a value that is within the capability of your amplifier's relay, often 30 to 100 watts. When your KAT500 starts to tune, because of a band or antenna switch, a TUNE button press, or auto tune based on VSWR threshold, it waits for the transmit power to drop below this "Amplifier Key Interrupt Power", then it interrupts the amplifier key line, waits for a tune-level signal from the transceiver, and selects the appropriate relay settings. When tune is complete and you stop transmitting, the amplifier key line is reconnected.


73
Bob, K4TAX



On 6/19/2019 7:06 AM, Irwin Darack wrote:
What is the function of the Amp Key Inerrupt Setting in the KAT500 Utility? 

Thanks, Irwin KD3TB 


Re: KAT500 AMP Key Interrupt Setting

Bob McGraw - K4TAX
 

In follow up to the question, I just checked my station configuration.  The KPA500 was in OPER mode, I activated the TUNE mode on my K3S, and then pressed the TUNE button on the KAT500.   Immediately the KPA500 switched off line, the KAT500 executed the routine to match the antenna and when completed the KPA500 came back on line.   I then pressed the TUNE button on my K3S to exit the tune mode. 

I saw no issues with the procedure or method. 

73

Bob, K4TAX


On 6/19/2019 4:01 PM, Rick WA6NHC wrote:
I use a K3, KAT500 and KPA500 currently.  The KPA is locked out during a KAT500 tune cycle.  Once that cycle is over, I hit the TUNE button again on the K3 to observe/confirm that the resulting tune is correct (watch the amp LEDs for SWR), THEN feel safe enough to run QRO. 

That intermediate step performs the verification at <200 watts.  It’s good to check with a bit more power as some matches vary on non-resonant antennas; what appears ‘good’ at 20 watts may be different at high power (also motivation to improve the antenna). 

A K3(S) key line lockout during tune isn’t needed but operational thinking changes may be.   In other words, Elecraft isn’t just another company, they thought it through and did it right. 

Rick WA6NHC

Smell Czech correction happens 

On Jun 19, 2019, at 11:32 AM, Michael Kopec via Groups.Io <michaelkopec1@...> wrote:

Thanks Bob (K4TAX).  I wonder why Elecraft never thought about this.  Any way I am operating the same way as u posted.  de Mike K8NS

On Wednesday, June 19, 2019, 10:39:09 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


I am not aware of any K3S menu value that will disable the PTT line to the amp when TUNE is active with the K3S. 

In my case, when I need to tune, I do so manually.  Thus when changing bands I have the amp set to automatically go to STBY.  Then I can use TUNE at the preset tune power value.  Once tuning has resolved a match, I then place the amp in OPER mode.

With each of my 3 antennas, I have trained the KAT500 to resolve a match for different frequencies.  For 160M it is trained every 25 kHz.  For other bands every 50 kHz.  With this method I can change frequencies via the K3S and bands and always have a matched condition.  Therefore I find no need to activate TUNE or place the amp in STBY when changing bands or frequencies.

73

Bob, K4TAX


On 6/19/2019 8:39 AM, Michael Kopec via Groups.Io wrote:
Bob K4TAX, is there any menu setting in the K3s that will break the key line to the KPA500 amplifier when the K3s TUNE button is engaged.  I do not hve a KAT5oo tuner but use a manual tuner and also a LDG AT-600 pro 11 auto tuner.  Now I hve to turn the amp to standby before tuning at low power as set in the K3s.  de Mike K8NS

On Wednesday, June 19, 2019, 09:16:25 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


The KAT500 interrupts the amplifier key line (sometimes called "PTT") during tuning. This is done to avoid damaging KAT500 relays by "hot switching" at high power and to protect your amplifier from wide SWR swings during the tuning process.

Some linear amplifiers, including the Elecraft KPA500, use solid state switching devices, and the amplifier key line may be interrupted at any time, even while transmitting at full power. For these amplifiers, set "Amplifier Key Interrupt Power" to its maximum value of 1500 watts, even if the amplifier cannot produce that power level. KAT500 firmware interprets 1500 as "unlimited". The KPA500 works much more smoothly if Amplifier Key Interrupt Power is set to 1500.


Other linear amplifiers use frame or vacuum relays, and often should not have their Transmit/Receive relay "hot switched" at high power. For these amplifiers, set the "Amplifier Key Interrupt Power" to a value that is within the capability of your amplifier's relay, often 30 to 100 watts. When your KAT500 starts to tune, because of a band or antenna switch, a TUNE button press, or auto tune based on VSWR threshold, it waits for the transmit power to drop below this "Amplifier Key Interrupt Power", then it interrupts the amplifier key line, waits for a tune-level signal from the transceiver, and selects the appropriate relay settings. When tune is complete and you stop transmitting, the amplifier key line is reconnected.


73
Bob, K4TAX



On 6/19/2019 7:06 AM, Irwin Darack wrote:
What is the function of the Amp Key Inerrupt Setting in the KAT500 Utility? 

Thanks, Irwin KD3TB 


Re: KAT500 AMP Key Interrupt Setting

Wes Stewart
 

Consider that the K3(S) might be driving an amplifier other than an Elecraft; a tube amp for instance.  Perhaps the op would like to tune his amplifier with reduced power from the K3.  He doesn't want the key line broken.

Wes  N7WS


Re: KAT500 AMP Key Interrupt Setting

Rick NK7I
 

I use a K3, KAT500 and KPA500 currently.  The KPA is locked out during a KAT500 tune cycle.  Once that cycle is over, I hit the TUNE button again on the K3 to observe/confirm that the resulting tune is correct (watch the amp LEDs for SWR), THEN feel safe enough to run QRO. 

That intermediate step performs the verification at <200 watts.  It’s good to check with a bit more power as some matches vary on non-resonant antennas; what appears ‘good’ at 20 watts may be different at high power (also motivation to improve the antenna). 

A K3(S) key line lockout during tune isn’t needed but operational thinking changes may be.   In other words, Elecraft isn’t just another company, they thought it through and did it right. 

Rick WA6NHC

Smell Czech correction happens 

On Jun 19, 2019, at 11:32 AM, Michael Kopec via Groups.Io <michaelkopec1@...> wrote:

Thanks Bob (K4TAX).  I wonder why Elecraft never thought about this.  Any way I am operating the same way as u posted.  de Mike K8NS

On Wednesday, June 19, 2019, 10:39:09 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


I am not aware of any K3S menu value that will disable the PTT line to the amp when TUNE is active with the K3S. 

In my case, when I need to tune, I do so manually.  Thus when changing bands I have the amp set to automatically go to STBY.  Then I can use TUNE at the preset tune power value.  Once tuning has resolved a match, I then place the amp in OPER mode.

With each of my 3 antennas, I have trained the KAT500 to resolve a match for different frequencies.  For 160M it is trained every 25 kHz.  For other bands every 50 kHz.  With this method I can change frequencies via the K3S and bands and always have a matched condition.  Therefore I find no need to activate TUNE or place the amp in STBY when changing bands or frequencies.

73

Bob, K4TAX


On 6/19/2019 8:39 AM, Michael Kopec via Groups.Io wrote:
Bob K4TAX, is there any menu setting in the K3s that will break the key line to the KPA500 amplifier when the K3s TUNE button is engaged.  I do not hve a KAT5oo tuner but use a manual tuner and also a LDG AT-600 pro 11 auto tuner.  Now I hve to turn the amp to standby before tuning at low power as set in the K3s.  de Mike K8NS

On Wednesday, June 19, 2019, 09:16:25 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


The KAT500 interrupts the amplifier key line (sometimes called "PTT") during tuning. This is done to avoid damaging KAT500 relays by "hot switching" at high power and to protect your amplifier from wide SWR swings during the tuning process.

Some linear amplifiers, including the Elecraft KPA500, use solid state switching devices, and the amplifier key line may be interrupted at any time, even while transmitting at full power. For these amplifiers, set "Amplifier Key Interrupt Power" to its maximum value of 1500 watts, even if the amplifier cannot produce that power level. KAT500 firmware interprets 1500 as "unlimited". The KPA500 works much more smoothly if Amplifier Key Interrupt Power is set to 1500.


Other linear amplifiers use frame or vacuum relays, and often should not have their Transmit/Receive relay "hot switched" at high power. For these amplifiers, set the "Amplifier Key Interrupt Power" to a value that is within the capability of your amplifier's relay, often 30 to 100 watts. When your KAT500 starts to tune, because of a band or antenna switch, a TUNE button press, or auto tune based on VSWR threshold, it waits for the transmit power to drop below this "Amplifier Key Interrupt Power", then it interrupts the amplifier key line, waits for a tune-level signal from the transceiver, and selects the appropriate relay settings. When tune is complete and you stop transmitting, the amplifier key line is reconnected.


73
Bob, K4TAX



On 6/19/2019 7:06 AM, Irwin Darack wrote:
What is the function of the Amp Key Inerrupt Setting in the KAT500 Utility? 

Thanks, Irwin KD3TB 


Re: KAT500 AMP Key Interrupt Setting

Michael Kopec
 

Thanks Bob (K4TAX).  I wonder why Elecraft never thought about this.  Any way I am operating the same way as u posted.  de Mike K8NS

On Wednesday, June 19, 2019, 10:39:09 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


I am not aware of any K3S menu value that will disable the PTT line to the amp when TUNE is active with the K3S. 

In my case, when I need to tune, I do so manually.  Thus when changing bands I have the amp set to automatically go to STBY.  Then I can use TUNE at the preset tune power value.  Once tuning has resolved a match, I then place the amp in OPER mode.

With each of my 3 antennas, I have trained the KAT500 to resolve a match for different frequencies.  For 160M it is trained every 25 kHz.  For other bands every 50 kHz.  With this method I can change frequencies via the K3S and bands and always have a matched condition.  Therefore I find no need to activate TUNE or place the amp in STBY when changing bands or frequencies.

73

Bob, K4TAX


On 6/19/2019 8:39 AM, Michael Kopec via Groups.Io wrote:
Bob K4TAX, is there any menu setting in the K3s that will break the key line to the KPA500 amplifier when the K3s TUNE button is engaged.  I do not hve a KAT5oo tuner but use a manual tuner and also a LDG AT-600 pro 11 auto tuner.  Now I hve to turn the amp to standby before tuning at low power as set in the K3s.  de Mike K8NS

On Wednesday, June 19, 2019, 09:16:25 AM EDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:


The KAT500 interrupts the amplifier key line (sometimes called "PTT") during tuning. This is done to avoid damaging KAT500 relays by "hot switching" at high power and to protect your amplifier from wide SWR swings during the tuning process.

Some linear amplifiers, including the Elecraft KPA500, use solid state switching devices, and the amplifier key line may be interrupted at any time, even while transmitting at full power. For these amplifiers, set "Amplifier Key Interrupt Power" to its maximum value of 1500 watts, even if the amplifier cannot produce that power level. KAT500 firmware interprets 1500 as "unlimited". The KPA500 works much more smoothly if Amplifier Key Interrupt Power is set to 1500.


Other linear amplifiers use frame or vacuum relays, and often should not have their Transmit/Receive relay "hot switched" at high power. For these amplifiers, set the "Amplifier Key Interrupt Power" to a value that is within the capability of your amplifier's relay, often 30 to 100 watts. When your KAT500 starts to tune, because of a band or antenna switch, a TUNE button press, or auto tune based on VSWR threshold, it waits for the transmit power to drop below this "Amplifier Key Interrupt Power", then it interrupts the amplifier key line, waits for a tune-level signal from the transceiver, and selects the appropriate relay settings. When tune is complete and you stop transmitting, the amplifier key line is reconnected.


73
Bob, K4TAX



On 6/19/2019 7:06 AM, Irwin Darack wrote:
What is the function of the Amp Key Inerrupt Setting in the KAT500 Utility? 

Thanks, Irwin KD3TB 

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