[Wswss] Epson HI-80 pens

[Jim Klitzing]

Bob Melvin (W6VSV) has a small antenna measurement setup that he spent the
last 10 years tweaking. For the past 2 years, a number of us here in the
Bay Area have been able to plot our 902, 1296 and 10 GHz antennas on his
range, it's been very helpful in determining whether the antennas really
perform (or not).

Problem is, he is using DOS and specialized hardware boards in an older
PC, and outputting the data to an old Epson HI-80 plotter; and now his
plotter pens are all worn out.

He does not want to recode his software for another output device (no
expertise or enthusiasm for this), so he's pretty much stuck with trying
to find some more pens somewhere. The usual Google searches turn up
nothing, anyone out there able to help locating these obsolete pens?

Thanks, Jim - W6PQL