The information in this thread has been really useful to me as I refine usage of PS.

Thanks very much, Scott, for responding to my question.

I have yet to hear the song of our people though.

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I know this is an old thread, but what is the best signal to use for tuning loading of the amp for maximum linearity with AmpView as shown in the second image of the last post? Two tone?

Thanks,
Chris, NU6C

Here's an update. As noted here by ea3aqr and also noted by someone who responded to a thread on this subject I created elsewhere, the use of noise blanker (NB, NB2) with very strong signals leads to artifacts that wipe out the band. The very strong, dirty signal still remains after turning off nois...

I definitely have NB on. The video is from a few days back. I saw your comment above about NB, and I'm looking forward to turning it off the next time the interference happens. It can be a daily event, but not always. Your comment about the Yaesu is interesting and ominous. It would be good to hear ...

w-u-2-o wrote:I wonder what sort of radio and amplifier that station uses.

Assuming I've identified the station correctly, and I have no reason to doubt that, the choices are either a Yaesu 991A into a Tentec Centurion or a Kenwood TS-440S into an Ameritron AL-811H.

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It's hard to tell from still images what's being done to the band dynamics by the one signal. Accordingly, below is a link to a .mov video file looking at the other side of the signal relative to the images above. In the video the red line furthest to the right is the end of 40m band, about 75kHz aw...

I'm not familiar with that video. Perhaps you could post a link? I suspect whatever Flex is discussing it's not relevant to this problem. Co-channel is co-channel and, if it is bad enough, will cause small signal suppression and non-linearities in nearby receivers. Here's the video, in particular n...

Classic co-channel interference. There's not a lot to be done about it. Cranking some step attenuator in on receive will help a little, but at the expense of weaker signal reception. Thanks, this is what I was thinking in terms of interference. I wanted to see what others thought though. I will say...

I'd like to ask for advice and possible solutions with regard to a problem that came up over the past few weeks. There is a 1.5kW station not that far down the road from me that operates on a frequency in the 40m about 45 kHz up from me regularly. His signal is causing artifacts across the entire ph...

Not seeing anything wrong. I recommend that the MAP option be unchecked unless it is absolutely necessary for the amp behavior. It would be safer to use the VK Amps coupler. Any time an adjustable coupler is used there is a danger that damaging levels might be accidentally achieved. Before going an...

Of course I do the critical troubleshooting control right after sending a help request: Going to PureSignal with the 8000dle alone by putting the external jumper back in place on the rear of the 8000dle between PS feedback and PS input, and then running pure signal with that configuration leads to S...

Thanks for the link to the code. I was able to find what I needed there.

I was able to diminish the effects of the EBS on the Alpha 91b by increasing the value of C56, increasing the time constant. This has allowed pure signal to give a better result. A significant separate problem I'm seeing is that the step attenuator is not outwardly functioning based on what S-ATT is...

On page 8 of the 8000DLE manual it notes: "The front panel Display uses a dedicated microprocessor. Various parameters such as Forward and Reflected Power, SWR, Current, Voltage, Temperature are clearly displayed for ease of visual reference. The microprocessor also provides real time protectio...

I found this thread that mentions the Alpha 91b uses EBS, here: https://community.apache-labs.com/viewtopic.php?f=20&t=2398&p=2659&hilit=alpha+91b#p2659 It would seem that the way forward is to bypass the EBS on the Alpha 91b. If anyone has done this and has some pointers, that would be ...

I'm trying to get pure signal functioning using Thetis, an 8000 die and an Alpha 91b with 1500W output using the -55 db RF sampler from VK-amps. To date pure signal increases IMD when routing the signal after the Alpha 91b from the RF sampler into the 8000 die pure signal input port. In contrast, pu...