Additional response to OP jo9s8as at yahoo.com:

Using an MFJ259B with a #14 AWG (.064 dia) copper wire 19.4 inchs long stuck
into the antenna connector, I measured the following...

f = 146.5 MHz
R = 64 ohms, X = 65 ohms
both hands holding the MFJ

f = 146.5
R = 43 ohms, X = 60 ohms
one hand holding the MFJ

Sat the MFJ down on a brick wall about 3.5 feet high and moved away from it.

f = 146.5
R = 34, X = 44

Same location, adjusted for minimum SWR

f = 153 MHz
R = 61, X = 25

This last reading was a bit difficult as the readings changed with my body
location.

I could never determine the sign of the reactance for sure and I was never
able to adjust the frequency so that the reactance reading was lower than
about 25 ohms.

The MFJ enclosure is about 6.75 x 2.375 x 4 inches.

Cheers,
John