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Resource List Handiham Radio Camp February,
2007
Tom Fowle, WA6IVG
Embedded Systems Developer/ Rehab Engineer
Rehabilitation Engineering Research Center
The Smith-Kettlewell Eye Research Institute
2318 Fillmore St.
San Francisco, CA 94115
415-345-2123 (Voice)
fowle@ski.org
http://www.ski.org/rerc/tfowle/
- The Smith-Kettlewell Rehabilitation
Engineering Research Center for blind low vision and deaf blind:
http://www.ski.org/rerc/
- The Smith-Kettlewell Technical file technical
journal for blind technicians and professionals including:
- soldering series
- from paper to project
- and many articles on adaptive devices and
electronic components.
http://www.ski.org/rerc/sktf/
- Talking Signs: Infrared Remote signage system
for building identification, intersection navigation etc.
http://www.talkingsigns.com
- QST February 2007 article: Audio output for
the MFJ209 antenna analyzer full text and audio demonstration file:
http://www.arrl.org/files/qst-binaries/fowle0207.zip
(I have the MFJ manual in text and with their
permission will send it to Handihams for web site inclusion.)
- The Mcount 500MHz Morse output frequency
counter kit available from the designer Chuck Olson:
http://home.att.net/~jacksonharbor/mcount.htm
Manuals available on that site in PDF, DOC, txt
and mp3
Completed Mcount unit in nice box with real loud
speaker and full input switching, for $45.00 U.S. from Chuck Carpenter W5USJ at:
http://www.w5usj.com/mcountbyw5usj.htm
Simple old-fashioned flexible continuity tester
easy to build in the Smith-Kettlewell Technical file "continuity testers
old and new."
Basic "probe type" tester (Not shown
at camp) for about $20.00 in a long square case with sharp metal probe at one
end, test lead at other end with clip. This tester works well for continuity
but is somewhat awkward to handle since the probe is part of the case.
http://www.productiondevices.com
- The TonTest, tester designed for automotive
work has both continuity (conductance) and voltage ranges with separate
buttons. Automatic off mode shuts down tester after 30 seconds of non-use.
Uses 6 volt battery. Has very heavy good quality test leads with heavy solid
copper clips and banana jack adaptors included. Two voltage ranges, 2 to 22
volts and 2 to 50 volts. Very durable and quality unit. Manual available in
text format. Made by Dave Reynolds, KE7QFI. The tester sells for $99 and is
in stock at Reynolds Equipment Co, Box 538, Evansville, WY 82636.
Website: http://www.tontest.com/
Email: tontestdave@msn.com
- Two devices to be made available in future as
kits from Rod Kreuter, WA3ENK:
1. Absorptive audible SWR bridge: This bridge
is connected between a 15 watt transmitter, or one whose power can be reduced,
and a manual tuner or adjustable antenna. When switched "in-line"
the internal bridge absorbs 3/4 of the transmitted power to reduce on air
interference. The bridge sounds a tone whose pitch reflects the VSWR so that a
manual tuner or other adjustments can be quickly made. Press of a button reads
SWR in slow Morse code. Requires 3 AA batteries and has auto power off. Kit to
be available upon publication of article in QST July or August 2007, expected
kit price not including box and connectors: $30.00
2. Audible meter reader, connects to any
varying voltage as in that found across any analog meter device. reads in
morse code 0-100 or between settable voltage limits. Input can be scaled to
almost any voltage range with simple resistor divider. Also can produce variable
pitch tone reflecting input voltage, and can compare that tone with one
reflecting the setting of an external pot which can have a tactile dial. This
allows for very quick adjustment of dynamic (changing) readings. Reader can
also interpret the meter position readings from Ham M. style antenna rotators
reading in degrees based on either north or south centered meters. Morse speed
and pitch can also be set via menus with a single push button. Kit to be
available pending publication of article in future, expected kit price $16.00
not including box.
Contact Rod at:
RAK@chem.psu.edu
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