With all the 11 meter antenna's I have ever used, the ones that worked the best - with the crappy AM / SSB CB radios was the antenna's that was placed in a free space ( nothing in the first and second Fresnel Zone ) somewhere between 30 and 60' in height.
I don't have to quote the entire post, the radio you are using has nothing to do with it, that's why I said it is a constant.I will throw my 2 cents in.
Most CB radios are crappy compared to other options of transceivers.
Some 11 meter rigs are definitely better than others.
What is the use of understanding take off angles if the radio you are using can not hear the weak signals?
No one is dishing on CBers as most of the members here enjoy all types of communications.
You only quoted part of the post, the rest of the post he explained the general progression of antenna improvement and height vs operating requirements wither local or DX,
Any questions re read the post you quoted in its entirety.
The 29 doesn't have SSB to compare against but lets look at the 148GTL here: https://www.universal-radio.com/catalog/cb_radio/4634spec.htmlhttp://www.rigpix.com/kenwood/ts440s.htm
Kenwood specs old ts 440
cobra 29 specs
Sensitivity is different??
On SSB there is a big difference.
Once again comparing apples to oranges.
Flat top the CB vers Ham radio stuff never ends well.
Everyone is entitled to a opinion.
Sometimes on internet forums you need a little thicker skin to allow others to post there opinion with out getting butt hurt.
I guess I could point out that this is the Amateur section of the forum but most of us manage to get over it with out being too anal about it.
It has worked well over many years.....
Try to lighten up and just enjoy the forum.