This is the personal home page for Dave Platt .
The primary thing currently available via this page is a directory containing some Macintosh software. The files in this directory are the most recent reasonably-stable development versions of various Macintosh software products I wrote, co-wrote, or coordinate. They are either freeware or shareware - please see the documentation included with each.
Go here to find scanned images related to the stereo multiplex decoder project for the venerable Dynaco FM-5 tuner.
Go here to a bunch of miscellaneous stuff related to my relatively new interest in amateur radio. There are schematics of a few simple battery-charger/replacement circuits I've built, some interesting articles I've been given or have scanned, and some repeater listings which I build periodically using information retrieved from the Northern California repeater coordination council's website (www.narcc.org).
Go here for scanned copies of the instruction/service manuals for the Commtest Systems (CT Systems) 3000 and 5100S service monitors.
Go here to read about the set of loudspeakers I designed and built a few years ago.
Go here to reach the Jade Warrior home page.
Download this package if you want to do full-sizes scans of LP album covers, but only have a standard letter-sized flatbed scanner which can't scan the entire cover in a single operation.
This file lists a bunch of LPs (mostly ones never issued on CD) which I've rather laboriously transcribed to CD-R format for my own listening pleasure and that of my wife. It's a shame how much really excellent music from the 1970s and before still hasn't been issued on CD, either due to the perception that the fan market won't support a release or due to the loss or destruction of the master tapes.
This directory contains a collection of stuff I've gathered together in support of my interest in amateur radio operations.
Here is a writeup and pictures of some RF/analog prototyping PC boards I laid out and had manufactured for doing "ugly" construction of small circuits. Gerber files are included if you want to make some of these for your own use.
This link will bring up a scripted Web page which helps generate secure, random, unpredictable encryption keys for WEP-enabled 802.11b wireless access points. It's intended to serve as a secure substitute for the poorly-designed "passphrase" key generation systems used by some vendors.
I don't have a comprehensive link up for the interpretive Adventure compiler I wrote back in the 1970s, but if you have questions about it, send me some email. I've put high-resolution copies of Bruce Beaumont's excellent series of maps to the 550-point cave here.
After many years of procrastination, I finally acquired one of those famous "round tuits" and studied enough to qualify for an Amateur Radio license. My callsign is AE6EO, and I can sometimes be heard on (or am listening to) various of the 2-meter repeaters in the Silicon Valley area. I'm most likely to be on 145.23- (N6NFI, PL 100.0, Stanford) or 145.27- (W6ASH, PL 100.0, Mountain View). My home station includes a homebrew three-wire dipole (wires cut for 40, 20, and 10-meter operation) mounted as an inverted-V, and a homemade dual-feedline "Copper Cactus" J-pole for 2-meter and 70-cm operation. I'm not on HF much due to lack of time to operate when the bands are open, but I do make occasional SSB and PSK31 QSOs.
My GnuPG (OpenPGP) public keys are here. My key transition statement (dated 22 March 2010) can be found here.