Search found 29 matches

by ki3u
Sat Feb 20, 2021 6:53 pm
Forum: General Discussion
Topic: Using a Satellite Finder as a WiFi Sniffer
Replies: 0
Views: 2553

Using a Satellite Finder as a WiFi Sniffer

It's very quick and easy to use a Satellite Finder to detect WiFI signals and more :

http://ki3u.byethost3.com/Radio-Physics ... iffer.html

Berj / KI3U
by ki3u
Wed Dec 02, 2020 12:08 pm
Forum: General Discussion
Topic: Radar Speed Gun experiments
Replies: 1
Views: 3765

Re: Radar Speed Gun experiments

I've added more experimental results, including with a BB gun.

Berj / KI3U
by ki3u
Tue Nov 10, 2020 7:34 pm
Forum: General Discussion
Topic: Radar Speed Gun experiments
Replies: 1
Views: 3765

Radar Speed Gun experiments

Anybody have any interesting ideas for experiments with radar speed guns ?

I describe a few using the Bushnell Speed Radar Gun, here :

http://ki3u.byethost3.com/Instruments_e ... 20Gun.html

Berj / KI3U
by ki3u
Wed Jun 03, 2020 7:20 pm
Forum: General Discussion
Topic: Improving the Image Quality of the GardePro A3 Trail Camera
Replies: 0
Views: 6835

Improving the Image Quality of the GardePro A3 Trail Camera

I recently acquired a GardePro A3 Trail Camera, which except for the positioning of the light sensor and motion-test LED appears to be identical to the Agitato A323. I was not satisfied with the quality of the images from the GardePro A3 and did a considerable amount of experimenting to find ways to...
by ki3u
Wed May 27, 2020 1:06 pm
Forum: General Discussion
Topic: Gauss field shielding the Laptop computer - for health
Replies: 0
Views: 5791

Gauss field shielding the Laptop computer - for health

Some data, from the point of view of health physics, on the EMF fields radiated by three different laptops, and the effect of simple magnetic shielding : http://ki3u.byethost3.com/Garden-Kitchen-Health/Laptop%20Gauss%20shielding/Laptop%20Gauss%20shielding.html If anyone has similar data, please shar...
by ki3u
Wed Apr 08, 2020 8:31 pm
Forum: General Discussion
Topic: analog indicator for the Teknetics Patriot Metal Detector
Replies: 0
Views: 8392

analog indicator for the Teknetics Patriot Metal Detector

I've added a simple analog output circuit to my Teknetics Patriot metal detector. It feeds a micro-ammeter which is mounted at the Patriot's control / display head. Aside from the immediate benefit of overcoming the Patriot's LCD display's lack of backlighting, the analog circuit has its own semi-in...
by ki3u
Mon Dec 09, 2019 7:25 am
Forum: General Discussion
Topic: Pancake GM Probe with CDV-700 : simple BNC adapter
Replies: 0
Views: 22940

Pancake GM Probe with CDV-700 : simple BNC adapter

The 6993 GM tube in the CDV-700 Geiger Counter / Survey Meter operates at 900 Volts. There are many GM tubes and radiation detectors which include 900 Volts within their operating range, and some are housed in probes with a female BNC connector. I was interested in trying my CDV-700 with other tubes...
by ki3u
Thu Jul 11, 2019 7:02 am
Forum: General Discussion
Topic: Ammeter shunts
Replies: 0
Views: 21510

Ammeter shunts

Some results using brass shim stock to double the range of an analog ammeter :

http://ki3u.byethost3.com/Radio-Physics ... hunts.html

Berj / KI3U
by ki3u
Mon Feb 11, 2019 4:41 pm
Forum: General Discussion
Topic: A simple ballpark check of a Gaussmeter's accuracy
Replies: 0
Views: 20364

A simple ballpark check of a Gaussmeter's accuracy

I describe a very simple test setup for checking the accuracy of the SJ200 Gaussmeter,
an instrument typical of those in the hundred dollars or so price range :

http://ki3u.byethost3.com/Instruments_e ... check.html

Berj / KI3U
by ki3u
Wed Nov 21, 2018 7:59 pm
Forum: General Discussion
Topic: Adafruit Metro M4 Express Arduino with Windows XP
Replies: 3
Views: 15566

Re: Adafruit Metro M4 Express Arduino with Windows XP

I now have a reliable procedure for the Arduino IDE Serial Monitor working with the M4 board under Windows XP.

I've put the procedure steps as an Addendum in the original webpage :

http://ki3u.byethost3.com/Instruments_e ... in-XP.html

Berj / KI3U