Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-02 Thread Wes
If it was easy, then anyone could do it. On 1/2/2024 8:52 AM, G4GNX wrote: Why battle against the inevitable, rather than use a band that’s more appropriate for the time of day? Unless of course, all bands are dead - then we’re all screwed. 😀 73, Alan - G4GNX South Coast UK Elecraft K4D / KPA

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-02 Thread G4GNX
Why battle against the inevitable, rather than use a band that’s more appropriate for the time of day? Unless of course, all bands are dead - then we’re all screwed. 😀 73, Alan - G4GNX South Coast UK Elecraft K4D / KPA500 / KAT500 / IC-9700 > On 2 Jan 2024, at 15:12, Andy Durbin wrote: > >

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-02 Thread G4GNX
I did not say that you can’t train in manual mode. I said AUTO should only be used for training - not for normal operation. I really hope that your one button push takes account of other users on the band when you’re training. Presumably it has some very sophisticated detection that can tell if

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jim Brown
On 1/1/2024 8:33 PM, Jeff Wandling wrote: TL;DR; Situation is resolved. Bad RF due to crap elbow connector and lack of diligence in ferrite application on AUX serial cabling. Thanks for posting. Two points. First, NEVER use JUNK connectors, defined as anything that isn't stamped Amphenol, or

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Mike Dodd
On 1/1/2024 11:15 PM, Andy Durbin wrote: "Do you have a K-Pod button programmed to do all this?" No, it's code in an Arduino Mega 256 than sequences a couple of state machines Very interesting. I'm sure I could program something similar, but given how infrequently I need to re-train my K

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jeff Wandling
This reply is going back in the thread, on purpose because I've settled the matter. The follow on discussion in the other thread was informative (thanks) and I'll store it in a note for the station. TL;DR; Situation is resolved. Bad RF due to crap elbow connector and lack of diligence in ferr

[Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Andy Durbin
"Do you have a K-Pod button programmed to do all this?" No, it's code in an Arduino Mega 256 than sequences a couple of state machines. One state machine controls putting KAT500 in full search tune, powering the exciter, waiting for completion of auto tune, returning exciter to RX mode. The o

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Mike Dodd
On 1/1/2024 9:33 PM, Andy Durbin wrote: ...I can auto train a complete band with one button push. What button is that, Andy? I set up a spreadsheet that shows the frequency steps for the bands, and programmed a K-Pod button to bump the VFO by the correct delta, but I still need to tap the TUN

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Andy Durbin
"One thing I forgot. The KAT500 should only be in AUTO mode when you’re actually training it." Training a KAT500 does not require it to be in AUTO mode. I NEVER put my KAT500 in AUTO mode and I can auto train a complete band with one button push. Andy, k3wyc ___

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread G4GNX
Jeff, One thing I forgot. The KAT500 should only be in AUTO mode when you’re actually training it. i.e. You tune the radio to a frequency, then TX (in TUNE mode) and wait for the KAT500 to stop clicking. ISTR that when a solution is found, the KAT500 TUNE light goes off and the solution is stor

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Andy Durbin
"AFAICR the manual says that if an AUX cable is connected between the KAT500 and the radio, the KAT500 will follow any frequency/band change and if a tuning solution has already been stored for that frequency/band it will be employed before the radio goes into TX. In other words, whilst the radi

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jack Brindle via Elecraft
KPA inhibit SWR? The KPA500 uses Reflected Power for all of its protections except for one item - if the SWR is above 18:1, it will throw an immediate fault. There is no adjustment for these thresholds. As far as the Auxbus, the KPA does not listen but only talks on it, conveying band, mode and

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jeff Wandling
Thanks. That's good detail. I'll recheck the manual once more. I made a common mistake of assuming too much and not reading enough. I have tremendous respect and faith in the engineering put into the system of the Elecraft line.. That's a long way of saying, It works brilliantly. I just

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread G4GNX
AFAICR the manual says that if an AUX cable is connected between the KAT500 and the radio, the KAT500 will follow any frequency/band change and if a tuning solution has already been stored for that frequency/band it will be employed before the radio goes into TX. In other words, whilst the radio

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Andy Durbin
"> How does your KAT500 know what frequency to use? Does it have a serial data interface or does it depend only on the internal RF counter? >  W7BRS>  AUX cable between K3 to KAT-500 and KAT-500 to KPA-500.  They are in serial communication per Elecraft protcol(s), whatever those are. > What KA

Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jeff Wandling
W7BRS> comments in-line below. --- 73, Jeff  W7BRS https://blog.w7brs.com On Monday, January 1st, 2024 at 1:21 PM, Andy Durbin wrote: > "Actual Results: The ATU-500 clicks between Bypass and MAN (by "clicks", I > mean only what I can infer from the behavior -- it is as if the ATU-500 is

[Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Andy Durbin
"Actual Results: The ATU-500 clicks between Bypass and MAN (by "clicks", I mean only what I can infer from the behavior -- it is as if the ATU-500 is either using the memory-based ATU settings of the previously tuned settings and switching between that and what seems like a Bypass mode) -- the c

[Elecraft] KAT-500 + KPA-500 / SWR Thresholds

2024-01-01 Thread Jeff Wandling
Scenario: K3 + KAT-500 + KPA-500 All with latest firmware as of 1/1/2024 Prerequisites: K3 ATU in Bypass. Loop (wire) antenna tuned via KAT-500 "MAN" to 1.1 SWR. Leave the KAT-500 in MAN not AUTO. Goal: To observe the KAT-500 and KPA-500 remain in a MAN (manual) tune configuration without attemp