Andrew Cornwall's
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cornwaab@yahoo.com


Economist - IT Manager
Electronics Experimenter
Digital Photographer
RV Traveller

Amateur Radio Callsign -
VE1COR

Economics and IT Consultant
Click for more information

Index of Articles on this Site
(* Click Below or Scroll Down)
* NEW! Password Generator Program
Produces passwords, and is a GUI front end for ccrypt, the popular, strong encryption program.
* RECENT! Wave-missile 'Portable', Vertical Antenna Project
Another variant on the popular amateur radio, HF multiband, quarter-wave vertical antenna. This one is 'Portable' and free-standing.
* Nova Scotia RV Parking Ban
Lastest News and Economic Impact Study on Nova Sctotia's RV unfriendly past.
* NEW UPDATE! Storing medicines, etc. at a safe temperatures.
A device for storing medicines and other materieals at safe temperatures.
* Digital Relative Field Strength Meter.
Inexpensive and simple to make meter for measuring comparative RF field signal strengths.
* Experimental Tuning Assistant Design for Amateur Radio
Low cost, easy to build tuning assistant (aid) for Yeasu FT-897 / FT-857 transceivers.

It may be useful for other radios too.

* Assembling the VK5JST Aerial Analyser Kit
How I put together the VK5JST Aerial Analyser kit. The VK5JST is a low cost, high quality, antenna analyzer in kit form sold by the South Coast Amateur Radio Club of Australia.
* Eratic Cursor Problem with Dell 1501 Laptop
Description of the 'erratic' cursor problem of my Dell 1501 laptop computer when powered by a DC to AC inverter.
* Curing Honda Generator Hash
The cure for reception interference (hash) when operating some amateur radio equipment with a Honda EU1000i (maybe others) generator.
Other Information:

* 1999 Supermarket Pricing

* Portable Computer Laptop Electricity Usage

* Cost of the Alaska RV Trip

* Real RVers Guide to Seeing Nova Scotia

* Tekonsha Brake Controller Temperature Problem



Nova Scotia RV Parking Ban
* * * NEWS FLASH: June 25, 2010 * * *
GOVERNMENT: RV PARKING BAN REMOVED

Previously, Nova Scotia was the only Provincial or State jurisdiction in Canada and the United States that officially baned RVers from parking overnight everywhere except in public and private campgrounds, regardless of the RVer's situation. This was inconvenient - even dangerous - for RVers. The existence of the ban gave Nova Scotia a reputation of being 'RV-Unfriendly', deterring many RVers from coming here and costing the Province millions of dollars in private and tax revenues and thousands of jobs. Provincial Government authorities have been telling RVers that they were not breaking the law when parking overnight away from authorized campgrounds. This was not the issue, because it was illegal for the property owners to allow RVers to park overnight. This RV parking situation has now been clarified for both private property owners and RVers. As far as the Provincial Government is concerned it is legal for an RVer to park overnight on any private property with the permission of the property owner to do so. Further, a private private property owner may permit an RVer to park overnight on his/her property without fear of prosecution.

Click Here for More Information

The RV Tourism Impact Study (accessed below) analyzes the economic consequences of the ban on Nova Scotia. For those not concerned with the Nova Scotia's previous treatment of RVers, the impact study includes a unique analysis of the North American RVing market which may be of wider interest.


Click on Image for
Information
Study of the Effect on RV Tourism
of the Overnight Parking Ban
in Nova Scotia, 2005

An Economic Case Study
of Banning RV Parking

Click Here for Report Summary and
Download Options



Click on Image to Download

Link to 'ccrypt Website:
http://ccrypt.sourceforge.net/

Password Generator Project
Windows Program to Produce a Password and
be a GUI Front End to 'ccrypt',
the Popular, Strong Encryption Program

This project started as a simple GUI programming exercise, but with the ability to Front End the command line encryption program 'ccrypt', by Peter Selinger, it turned into a useful utility.

Warning:
This link has a download program called Password Generator, including instructions in a Readme file. The program has been virus checked and is believed to run safely. Never the less, you run the program at your own risk.

Click Here or On Image to Download
a ZIP file of the Program and Instructions (193 KB)



Click on Image
for Article

Wave-Missile Antenna Project
Multi-Band, Quarter-Wave, Vertical,
Amateur Radio Antenna


Covers Most HF Amateur Radio Bands
Portable enough for RVing and Field Day Operation

Free-standing
Built-in Counterpoise
Easy to Construct
Fairly Inexpensive
Rugged

** THE CURRENT VERSION OF THIS ARTCICLE IS A DRAFT **
There will likely be changes based on any comments received

Click Here or On Image for
PDF Download of Article (2.0 MB)


Cooler-Heater Device for Safe Temperature Storage of
Medicines and Other Temperature Sensitive Materials


An Effective Way for Safe Storage
At 'Room' and Other Temperature Ranges.

Use in Mobile or Fixed Locations
Cold to Hot Climates
Energy Conserving

The description of this project is in three parts
Click on the images below to download the corresponding part

Overview of the Project
and Early Testing

Click on Image for Article
Improved Cooler-Heater
Insert

Click on Image for Article
Controller Circuit
and Program

Article Not Yet Available



Click on Image for Article
My Dell Inspiron 1501 Notebook Computer

Waveform Analysis of Problem of
Erratic Cursor by the Touchpad
When the Notebook Is Powered by a
12 volt DC to AC Inverter.

Click Here or On Image for
PDF Download of Article (873 K bytes)

Dell Inspiron 1501 Erratic Cursor Update August 17, 2008

After posting the article on the erratic cursor of my Dell Inspiron 1501 laptop I've received several responses by Dell Inspiron 1501 owners asking if I had found a way to fix the problem. Unfortunately, I have not. Recently, Ted Hughes contacted me about his solution. Dell gave Ted a new 65 watt power adaptor with a 3-prong AC power plug (Item # F7970 Asy ADPT; AC; 65W; ULD; LTON and Item# K2596 KIT; CORD; FLAT; D3W/3P; P65; US plug) and updated his drivers and BIOS. Here is what Ted reports:

Well I want to give you more feedback on the cursor problem we share with the 1501 when using an inverter. While the 3 prong adaptor did make the cursor 70% better it is still not what I would call a success, but worth doing. I have since been in contact with Dell for a follow up to resolve this, and just a few hours ago they called me back and remotely loaded the latest drivers and the newest BIOS (2.6.3), and it seems as if this has totally fixed the issue. Now I don't want to be hasty ... so I would prefer to use it a few days. It probably won't get any serious mobile (inverter) use until I return to work on Monday, but today I sat in my vehicle and switched back and forth between both power adaptors and I admit it really seems that the latest drivers along with latest BIOS did make the problem go away while using the new power adaptor.
--- Ted



Click on Image for Article
Curing Generator 'Hash'
(received noise)
from My Honda EU1000i

Adding a Simple Common Mode Filter to the
Power Cord of My Honda EU1000i Generator
Solves a Problem of Generator Hash
Received by My Yaesu FT-897D Transceivers.

Click Here or On Image for
PDF Download of Article (412 K bytes)



Click on Image for Article
Assembling the VK5JST Aerial Analyser Kit
The VK5JST is a high quality yet low cost
Antenna Analyzer

Link: This kit is sold by the South Coast Amateur Radio Club (Australia)

Click Here or On Image for
PDF Download of Article (3.8 Mb)



Click on Image for Article
Experimental Tuning Assistant (Aid)
for Yaesu FT-897 / 857

Amateur Radio:
Low cost, easy to assemble Antenna Tuning Assistant

Intended for Yaesu FT-897 / 857 transceivers
- may work with other transceivers

This is an experimental design (for me)
Please send me your comments.

Click Here or On Image for
PDF Download of Article (2.3 Mb)



Click on Image for Article
Digital Relative Field Strength Meter

Amateur Radio:
Inexpensive but Effective
Relative Field Strength Meter

for HF, VHF, and UHF Bands.
Nothing Could Be Simpler
Please send me your comments.

Click Here or On Image for
PDF Download of Article (441 KB)




Other Studies Click Below Other Studies

- 1999 Pilot Study of Supermarket Prices in the United States and Canada

- Electrical Requirements of Portable Computing: Update 2003

- Cost of RVing: Case Study of the Alaska Trip

- RVers Instant, Real Guide to Nova Scotia

- Thermal Instability of My Tekonsha Brake Controller (and description of how it operates in general)