Re: [Elecraft] Spurs on 6 meters on FT8 Barney K3LA

- From: Keith Trinity WE6R [mailto:ke...@elecraft.com] Sent: Wednesday, June 17, 2020 11:15 AM To: elecraft@mailman.qth.net; sch...@scholl.org Subject: Re: [Elecraft] Spurs on 6 meters on FT8 Barney K3LA Did you re-set the Bias after changing finals and working on the KPA3 and LPA? 1. The 8W vs 12W

Re: [Elecraft] Spurs on 6 meters on FT8 Barney K3LA

Did you re-set the Bias after changing finals and working on the KPA3 and LPA? 1. The 8W vs 12W switch-over point on 6m is normal. 2. If the 6 pins for KPA3 DC power were darkened and you replaced with gold, you *MUST* also replace the corresponding KPAIO3 Riser-Board SOCKET!! The socket gets

Re: [Elecraft] Spurs on 6 meters on FT8

I have an older K3 ( under 3000) so I do not have the newer KPA3A. Several yeas ago I had to replace at least one of the driver transistors. At that time I also changed some transformers either on the driver or final board. I do not remember without looking but the nature of the wire change was

Re: [Elecraft] Spurs on 6 meters on FT8

If you have a K3S (or late K3, with the KPA3A type 100w amp). Please see the recent FW notes in the K3 Utility about setting the 6m Atn6 attenuator switch to prevent 6m oscillations. Also, what rev of KLPA3A and KPA3A are you at? There have been improvements. Keith WE6R, Elecraft K3 Tech.

Re: [Elecraft] Spurs on 6 meters on FT8

Yes this was a K3. I had been running the audio gain at about that point. But when the pictures were taken I had backed off to try to help the situation. Barney -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing

Re: [Elecraft] Spurs on 6 meters on FT8

This is a picture of my signal on a 7851 about 6 miles away. At another point I had the KPA500 and it looked like this. I also saw a similar view on a 7300 in the

Re: [Elecraft] Spurs on 6 meters on FT8

Barney, I assume you are talking about a K3/K3S or KX3. For those you need to increase the audio drive so you have 4 bars solid showing on the ALC meter with the 5th flashing. That is the NO ALC point on those radios. It is required for proper power control. See the article on my website

Re: [Elecraft] Spurs on 6 meters on FT8

Hi Barney, Please share some details about the nature of the spurious signals you're trying to solve Thanks 73 Frank W3LPL - Original Message - From: "cbscholl" To: elecraft@mailman.qth.net Sent: Friday, June 12, 2020 3:25:12 PM Subject: [Elecraft] Spurs o

[Elecraft] Spurs on 6 meters on FT8

I am having a problem only on 6 meters with spurs being generated while using FT8. I have the audio level turned down so no alc reading appears or even lower and that does not eliminate them. The other point that I noticed is that only on 6 meters the 100 final turns on above 8 watts rather than