Amateur Radio Direction Finding: Amateur Radio Direction Finding

Showing posts with label Amateur Radio Direction Finding. Show all posts

TORONTO CANADA Amateur Radio Jamming

TORONTO CANADA 🇨🇦 Amateur Radio Jamming

DMR Net CANADA 🇨🇦 Terminated ( abuse 2018 - 2020 )

https://dmrnet.blogspot.com/

READ all of Toronto’s abuse HERE:

http://torontorepeaters.blogspot.com/

Listen to Audio PROOF ::

🇨🇦 AUDIO of :: William Marquis VE3KUU aka former VA3HBO of SCARBOROUGH -Toronto

Toronto CANADA HAM Amateur Radio Jamming :   I Gotta Put Andres ID In My Radio
Toronto CANADA HAM Amateur Radio Jamming :   I Set The Beam Up To Jam DMR
Toronto CANADA HAM Amateur Radio Jamming :   I Wont Jam Any More On The DMR
Toronto CANADA HAM Amateur Radio Jamming :   There Will Be Noo Canada-Wide Sunday Night Nets

Search CANADIAN callsign 🇨🇦

www.bit.ly/callsigncan

KrakenSDR

A phase-coherent software-defined radio with five RTL-SDRs

Radio Direction Finding (RDF) refers to any technique used to determine the directional bearing toward an RF transmitter.

The simplest method is to use an antenna that only receives signals from the direction in which it is pointed, then manually sweeping through 360 degrees to identify the bearing angle that receives the strongest signal. You could then do this from multiple locations and make note of where your bearings intersect. Unfortunately, this "simple" method requires a tuned directional antenna and a manual, error-prone process.

https://youtube.com/playlist?list=PLfQ4WXRWu3hcAauljjL1Tkc-vqimuAy_Q

KrakenSDR videos

KrakenSDR

videos @ Youtube

www.youtube.com/@VE3WZW

Radio Direction Finding (RDF) refers to any technique used to determine the directional bearing toward an RF transmitter.

The simplest method is to use an antenna that only receives signals from the direction in which it is pointed, then manually sweeping through 360 degrees to identify the bearing angle that receives the strongest signal. You could then do this from multiple locations and make note of where your bearings intersect. Unfortunately, this "simple" method requires a tuned directional antenna and a manual, error-prone process.

Multipath

Multipath is the arrival of a transmitted signal at a receive antenna from multiple paths due to reflections. The reflections can occur from the ground, trees, buildings, people, or whatever is around. As an example, see Figure 1. The dominant signal is often the Line of Sight (LOS) signal, which is the direct path from the receiver to the transmitter. The other arriving signals (due to reflections) are known as multipath. In some situations (particularly in urban environments), there is no line of sight signal, and all received rays are from multipath. Multipath causes significant variation in received signal - sometimes the multipath reinforces the received signal, but often it subtracts from it (a phenomenon known as fading). See also diversity reception.

Fox Hunt Amateur Radio Attenuator

Contacted John for our City Group buy #10 / 20 ++

#va3yyz

🦊 - https://twitter.com/ve3wzw/status/1447252378437160960?s=21

🚫 🚷❌⛔️ - identify/terminate 🔫 the rabid dog(s) disrupting amateur radio 🦊 Toronto Canada

#attenuator 🦊 #foxhunt #jamming #Toronto #Canada #hamradio #amateurradio #ve3wzw #va3yyz

Amateur HAM Radio - Fox Hunt Offset Attenuator Kit on tindie*com

tindie.com

Fox Hunt Offset Attenuator Kit by 3rd Planet Solar / KC9ON on Tindie
Find hidden transmitters (fox) using this offset attenuator

BUY from tindie Fox Hunt Offset Attenuator Kit

$10.00

2 Meter Ham Radio Fox Hunt

Fox Hunting Offset Attenuator Kit

The Art and Science of Radio Direction Finding (RDF)

Radio direction finding is used to find sources of interference to any form of wireless electronic communications, including broadcast and two-way radio, television, and telephones. It is also used to track missing or stolen cars and other property. Search and rescue workers use it to find persons in distress. Emergency Locator Transmitters in downed aircraft are tracked with RDF techniques.

The Art and Science of Radio Direction Finding (RDF)

Ham (Amateur) Radio Direction Finding Canada

Introduction to Amateur Radio Direction Finding

Introduction to Amateur Radio Direction Finding

Radio direction finding is a set of skills used to find hidden radio transmitters. Amateur radio operators practice these skills in events called "foxhunts" or "t-hunts". With these skills, they are better prepared to serve their communities in a variety of emergency situations.

Amateur radio clubs worldwide sponsor foxhunts, where individuals and teams compete to find hidden transmitters. Most hunts are open, and clubs welcome new participants. On-the-hunt training and coaching are readily available.

Micro-Fox T-Hunt Transmitters

Byonics - MicroTrak

Micro-Fox T-Hunt Transmitters

Byonics carries these Micro-Fox transmitters for Hidden Transmitter Hunting, also called Fox Hunting, Bunny Hunting, or T-Hunting. These transmitters are small, self-contained, and easy to hide. They are great for on-foot or driving hunts, or as secondary transmitters after people find the primary T. Just conenct to any 2-meter SMA antenna, such as our V2 or V4 antenna, add a battery and configure with your callsign, and hide the transmitter.

Transmitter or Fox Hunting Class 101 by Byon Garrabrant

written by Todd Harrison

I attended the Arizona Repeater Association’s (ARA) February 2014 meeting. They had a guest speaker, Byon Garrabrant, presenting what could be called the definitive lecture on Transmitter Hunting. I have broken the lecture up into 4 parts based on content for easier viewing and reference. In general the 4 parts are:
1. What is Transmitter Hunting
2. Hiding
3. Hunting
4. Closing remarks and High Alt. Balloon Tracking.
There will be a large photo gallery after the videos below if you want to see some items in detail.
I want to thank Byon Garrabrant and the ARA for allowing this content to be distributed publicly for everyone to learn and enjoy.
You can find more about the ARA at their website: http://www.w7ara.org
You can contact Byon Garrabrant or purchase his APRS and Fox Hunting gear from his website: http://www.byonics.com
What is Transmitter Hunting or Fox Hunting All About

What is Transmitter Hunting or Fox Hunting All About

What is Transmitter Hunting or Fox Hunting All About (1 / 4)

You can find more details, links to all 4 videos and a large photo gallery on my blog posting here:
(1 / 4)
More (2 / 4)

Transmitter Hunting Basics

A look at Transmitter Hunting as if done like an old Newsreel.

ARDF (Fox Hunting)

Radio DF DDF2020T: GLOBAL TSCM GROUP, INC.

Radio DF DDF2020T: GLOBAL TSCM GROUP, INC.
kn2c.us/

Our new DDF2020T, you do not need to change the antenna to the receiver side even when the power is off. Now it has higher stability by fixing the problem of unstable connection of each base. In particular, the base of the antenna on the roof of the car is made with aluminum so that it does not become rusty. We hope you are satisfied with this product.

Update ::
We now have a GITHUB collaborative group
https://github.com/HAMradioCanada/RDF-Drone/issues

Doppler Systems Mobile Kit

mobile kit includes antennas for the bands to be covered, the mobile summer, the GPS receiver, the compass (optional), and all the cables necessary to setup and operate a mobile direction finder. All of the equipment is packaged in a foam lined Pelican case. Power cables are provided with cigar lighter plugs. All antenna elements and cables are carried in a custom Mighty Pouch accessory bag. If the processor suite contains a data radio the data radio antenna is also housed in the Pelican case. The figures below show typical a equipment complement. The mobile kit is available in a single, dual, or three-band antenna kit covering 100 MHz - 1000 MHz.
http://www.dopsys.com/products/suites/MobileKit.html

Mobile 100 - 500 MHz AOR SR2200 14 ft none none

To be ordered.

Radio Frequency Direction Finder

Radio Frequency Direction Finder

http://youtu.be/ZUqzdrB1o2U

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