Questions tagged [fox-hunt]

Questions about fox hunting - using radio direction finding to locate a hidden transmitter - including the rules and necessary equipment.

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62 views

Is there a practical way to triangulate a signal?

Around my location, there is an odd signal near 50.145MHz (at this moment it seems centered around 50.14735MHz but that changes as the day progresses). Other amateur radio operators in this city also ...
3
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0answers
75 views

Can anybody identify an appropriate radio for this game? [closed]

Complete radio ignoramous here. I've been playing a game called The Blackout Club, and I'd quite like to make a 3D model of a radio set for it. The game is set around 2007 and, as in the picture ...
5
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1answer
219 views

How to find something disrupting car key fobs across a parking lot?

Apparently there's a parking lot in which car key fobs are messing up: Key fobs that suddenly won't unlock vehicles. Cars that won't start. Alarms that go off for no reason and can't be quieted. ...
3
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2answers
500 views

How to make a “you're getting warm/cold”/“fox hunting” game based on RF signals

I would like to build a system in which the emitter emits omnidirectional RF signals, and the receiver gets a stronger signal (it does not have to be accurate) with a) closer distance from the emitter ...
3
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2answers
297 views

Fox Hunting w/o yagi to find a lost High altitude balloon payload

First off, very new to ham radio. I wanted to track my High altitude balloon using APRS, and after loosing that payload in a mature cornfield for 2 months, decided to add a micro-fox from Byonics to ...
4
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2answers
280 views

Audio tones and patterns used for fox-hunt transmitters?

Question: What are the most effective audio tone frequency(s) and pattern(s) used in direction finding in the world of amateur radio? Also: Is there a specification for the tones that amateur radio ...
6
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2answers
234 views

How do I keep the bomb squad from winning a foxhunt?

I want to hold a fox-hunt in a relatively public location, such as a park or college campus. The fox that I've built uses an ammo can with a rubber duck antenna. It occurred to me that this ...
7
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1answer
543 views

Is bending the tips of the antenna wires going to affect the effective length?

I'm looking at designs for low cost DIY yagi antennas for a fox hunt, and pondering coat hanger wire and PVC piping. I'd like them to be built by the youth who will be doing the fox hunt, but that ...
10
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1answer
205 views

What is body blocking, and does it work with a stock HT on a foxhunt?

I've heard that you might not need a special directional antenna to participate in a foxhunt, that some people are able to use their body to help determine the direction of a signal. How does this ...
7
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1answer
357 views

Is FM appropriate for foxhunting?

I'm thinking about an inexpensive way to create a foxhunt kit for youth groups, and am wondering if the cheap dual band HTs could be used. However, it occurs to me that FM doesn't provide any good ...
7
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1answer
301 views

Simple cheap foxhunting?

I'm currently looking to do a foxhunt for a youth group, and need to keep it inexpensive and easy enough that it won't be impossible for those new to foxhunting and ham radio, but difficult enough ...
7
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2answers
225 views

Is any licensing require to receive in the amateur radio bands?

I'm considering hosting a foxhunt for a local youth group (scouts, in this case), and one of the questions asked was whether those searching for the hidden transmitter need have a license of any sort. ...
6
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3answers
7k views

How can I construct a practical loop antenna for 2m band?

How can I construct a practical loop antenna for 2m band to use in a fox hunt? Is it even possible to construct a hand-held antenna for the 2m and 70 cm bands? I tried to calculate the dimensions ...
12
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2answers
991 views

Direction finding: How to find a stuck FM transmitter on 70cm?

There's a blank carrier on a 433 MHz FM voice frequency here. How should we go on about finding the transmitter's location? Practical procedure? Could be somewhere downtown.
1
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2answers
56 views

What are some fun activities hams participate in? [closed]

Yes, Amateur radio is a hobby. The general impression however is that it is a geeky/nerdy/kooky (I forget which carries a negative connotation!) hobby; either the ham sits at a transceiver, or is ...