New Class E transmitter status

[kb3ouk]

High percentages (well beyond 100%) of positive peak modulation also make the effects of selective fading more severe.

High positive peaks will also wreak havoc with a fast AGC, and if you are running a receiver that doesn't allow manual RF gain control or the ability to switch to a slow AGC (some modern riceboxes are this way), it will render anyone running big peaks almost unintelligible. My FT-901 has a fast/slow AGC switch and I'm glad it does, since there are some guys that I would not be able to copy at all if it was fast only and had no way to slow it down.

[WA3VJB]

Maybe eventually we all will run sync detectors and the wavelet problem will go away.

Some wavelets are hi hi FB.

Otherwise, maybe eventually we will all turn slopbucket.

[WD5JKO]

Here are some wavelets, and without wavelets. I found it interesting that with a diode detector, the altered waveform via PNCL (Progressive Negative Cycle Loading) sounds quite good since the distortion is largely even order whereas a diode detector reacting to wavelets can make the most annoying sound. The waveforms depict positive peaks at about 150%.

The waveform and PNCL circuit are from a Central Electronics 20A using an E34L Power Pentode in the final. This rig can do about 45 watts PEP output.

Jim
WD5JKO

[K1JJ]

Otherwise, maybe eventually we will all turn slopbucket.

No shame in that. Heck, I turned "slob" bucket 40 years ago. I spend half my on-air time doing ssb DXing and love it.

Setting up a powerful, clean and effective ssb station is as difficult as doing the same thing on AM. I find it pays to have several modes and dives to hang out in to keep it fresh ... :-)

T