Coaxial cable stretcher

I'm very skeptical. That is why I compared his work to that of 260 other technicians to see if anyone was capable of duplicating his results.

 

Best experiment is build a test bench for a single frequency with 180° phase angle between components. Have spare 90° jumpers handy. Test waveform with 180° jumpers then switch to 90° jumpers to see changes. That will be the most dramatic change.

 

He understands what I'm talking about but he thinks I'm crazy and he doesn't believe what I'm saying which is a pretty typical response.
David Bupp didn't even understand what he was seeing on his oscilloscope when I showed him one of Mark's radios. Dave said he can make that radio work much better. But since I had already had Dave do another one of those radios for me a couple years earlier I knew better. This goes Way Beyond textbook and classroom stuff which is what Dave specialized in. Like I said stock radios outperform textbook work which is what Ridgeline knows

 

A real good experiment is to buy two radios and start twisting screws and one of those radios and compare the performance of those two radios side by side after the misalignment and then let Ridgeline try to restore that radio back to stock condition and then do a side-by-side comparison afterwards and I think you would be shocked to see the stock radio outperforms the one that had the futile restoration attempt.
I've already done this from coast to coast and only one guy can restore a radio back to stock performance or better.
All the guys that do textbook work that recite passages from the ARRL antenna handbook are incapable of restoring a radio back to the same performance as it came from the factory.
It might look good on their bench but their bench is misaligned whether they want to admit it or not.

 

Generally the real proof is what you hear over the airwaves.

 

You should do a Google search for capacitive reactance and inductive reactance.
Those are two things that every technician likes to pretend does not exist on his test bench but then they recognize its existence when it's convenient for them when it comes to doing antenna work. The laws of physics apply 24 hours a day no matter how uncomfortable they make us feel at the present time

 

http://ve2azx.net/technical/CoaxialCableDelay.pdf

This is a pretty good thing to study and understand before you succumb to the cable length means nothing crowd.

Reactance varies with frequency Due to capacitance and inductance.
Capacitanceand inductance cause phase shiftwhich Alters what you see on an oscilloscope.

Chip from Ranger radios supposedly is the guy that designed the HR 2510 understands this very well unlike most ham radio operators