A systematic approach is to start at 100 watts using the amplifier and ATU. Allow the ATU to resolve a match and note the SWR value. Then start increasing the drive from the transceiver in increments

Hi Dick, What does the K3 report as its input VDC during TX on these bands? I had some issues and when I checked that voltage it was low, so I removed some lossy DC supply line connectors and

I have an old K3 which has low power on 30, 40 and 60 meters. See chart below. Other bands are OK. The TX Gain calibration did not fix it. The K3 PWR knob was at full clockwise with display

This is an interesting thread from a sociological standpoint more than technological one :) But an “appliance operator” is saying it’s not my feedline, not my connectors, not my antennas, but

Jeff take your KPA500 and see if it works any better. Wou;d be a check on the 1500s’ ATU, and Might show any arc faults. Paul NS2N Sent from Mail for Windows 10

Some more information : This amp was purchased new as a factory built unit in August 2019. When we hooked it up back then the ATU in the KPA1500 seemed to lower the SWR of all his antennas when it was

The K-Board is sold. Thanks, Jim – WS6X

Thought I’d try here before “going public” to the ham classifieds. I have for sale an essentially unused smart keyboard interface for a K3/K3s: QRP Works - K-Board K3/K3S Package 2. See the

I'm looking for 2 2.8KHz filters to replace the 2.7KHz's in my K3S. In addition to just buying them outright, I can offer a partial trade by throwing in my 2 2.7KHz's plus cash, or swapping some

By default, Windows is set to power down USB ports to save power after a certain time of "inactivity". Inactivity is NOT measured by whether the USB port itself is being used; Windows simply looks for

I occasionally hear my windows system play the USB disconnect/connect sound when nothing has been plugged in or removed. Using USBDeview, I found it seems the K3s Audio Codec disconnecting and

I do not know if this works with all radio / KPA1500 combinations however with my K3S/KP1500 I do the following.Hopefully it i something as simple as this. I do not use the ATU in the K3S. Tune the

What is the SWR with the amp on but in the SSB part of the band? Does the SWR jump there too, or does it provide a good match? I don't know if the TH6 uses traps but it could be the amp heating up

The first thing that occurs to me is that something is going wrong with the antennas or feedlines at high power. Does the SWR go high in the OPER position at 100 W, or only at higher

A friend of mine has a KPA1500 that's having strange issues with the ATU. The SWR on his Hygain TH6 tri-bander is kind of high in the CW band because it's tuned for SSB. When he goes down to CW on 20

Excellent Thanks The remote on/off of power at 120vac level is next. 73 W5AJ

Thank you Klaas. Sherm w8hi

That was exactly the fix, Mike...per N1MM support...logger doesn't know "length" of message...so add 5 sec to recorded length of message...works fine now... 73, Neil AE1P

I had a similar issue when wishing to power up the K3 at the remote station every time the 12V power supply was switched on. My solution was an 8 pin PIC, see

Hi Guys. Not had these issue with my line up, however had issues with flashing software. (K3 Bricked) As Engineer having updated software "all my life" and having experience over here with the K3 -