apache-labs.com

Hi,
in my Thetis x64 latest release and protocol 2 (2.0b) setup, as soon as I send the 2 tones to linear amplifier, it is making a lot of beeps and on display it writes that I am trying to emit on a not permitted frequency and switches off power (0 W out to antenna).
I tried in 10 and 6 m and same result. I used low power setting and output from 100 to 500 W.
With single tone it is perfect; with two tones and consequent odd IMD signals, the linear amplifier always writes that I am transmitting in a wrong frequency.
I tried with and without feedback from linear amplifier

So it is impossible to use and setup PureSignal 2 with linear amplifier ON.

Any suggestion?

Sounds like RF in the shack, what is the antenna system, the matcher, feedline and antenna?

What kind of amp is it? Acom amps have a known problem with two tone.

Scott,

Per the thread title it's a SPE Expert 1.5K V2

Mark

Hi Mark,

please try Two Tone Test with 700 Hz and the second Tone with 890 Hz.
May be that the Frequency-Counter in the Amp has a Problem with the regular Test.

73 Erwin

Edit: Level at 0.000 db

No problems with my 2kFA. Or my earlier 1.3kFA. Seems a bit odd for sure.
Doug

With 700 and 890 Hz it works perfectly!
Many thanks for suggestion.