Hi again,
The Tuf Duck comes in two models, the EXE is the coaxial dipole and the EXP is the end fed half wave. As near as I can tell by the pictures the dipole is pretty obvious by the thick bottom half that encloses the sleeve while the end fed I would guess has a 1/4 wave helical delay line buried in the base. That makes it an electrical 3/4 wave which has a 52 ohm feed impedance while the dipole being center fed half wave would be 75 ohms. Either way the transmitter doesn't care, good enough for government work as they say.
Now if you tell us which one you use we can tie the ribbons on this thread and readers can draw their own conclusions.
I can understand why the Max 70cM and 2M ground planes were discontinued, not only big and clumsy but the MSRP vs. zero cost would make them rather unpopular. I say zero because I can slap one together with a couple of junk box connectors and 14ga solid copper wire in a few minutes. The only reason the 800MHz one sells is because the average scanner enthusiast is anything but technically knowledgeable. Yeah, that's why they ask questions here and if they all get together and ask me at once how to build one we'll put Max out of business. (;->)
Packet eh? There are several BBS nodes in the NYC metro area and being critically located they link to NNY, CT, LI WNJ and CNJ, then NJ2AR links to SNJ and SEPA. Yeah, I know NEBBS, I've been active since 1995 and NJ2AR is my home BBS. Oh, for the non amateur packet is our radio internet and a BBS is what you're posing on right here.