"Cecil Moore" wrote in message
.. .
Sal M. Onella wrote:
I have very few ideas for correcting the original sleeve design.

What are the resonant frequencies and feedpoint
resistances for the two types of feeds?

I will need to re-borrow my buddy and his analyzer. We just took readings
but no notes. (Yes, I know better.)

There's no rule that says the antenna must be
50 ohms at resonance. A 2.8:1 SWR could just be
an indication that the feedpoint impedance at
resonance is 18 + j0 ohms.

Agree. However, the venerable Kenwood TS-120 says to keep the VSWR under
1.5:1. So, my first attempt is a bad antenna for the intended purpose.

Did you do anything to choke the common-mode
currents on the feedline? If not, those currents
can upset the SWR meter reading.

No. That was careless of me. Four turns of the coax if I remember
correctly from an earlier discussion here. Thus, the first attempt may not
be a bad antenna but a bad measurement.