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Questions tagged [safety]

Questions about safely installing and operating ham radio equipment in homes or vehicles.

2
votes
0answers
110 views

How to supply high voltage to an amplifier in a safe way?

The grounded-grid amplifier that I am looking at requires 1100 volts Max. How do I safely deliver this rated voltage without getting hurt? Should I consider a alternative amplifier? By request here ...
3
votes
2answers
91 views

Antenna installation for a base station

I have a detached garage that is approximately 15 feet high. The garage is approximately 20 feet from my home I will be using a Kenwood D-710GA radio, a Grandmaster SWR Meter and a 6 foot comet GP-3 ...
1
vote
3answers
143 views

Can the tip of an antenna burn insulation/drywall?

In my house, I’ve got a mag mount antenna mounted on a piece of sheet metal on top of rubber and the tip of the antenna goes into my ceiling and possibly contacts or is near to home insulation. I was ...
1
vote
4answers
484 views

Is it safe to live close to cellular antenna?

I saw some apartment in my county in a very good location (quite close to the beach), however, the rent is very cheap. The apartment is the highest on that building, on top of this building there is a ...
3
votes
1answer
259 views

why do some radios have two fuses in the power leads

On a number of fairly modern rigs I've seen that both power leads are fused: Why is this still so? Does this have something to do with some vehicles having a ground-positive system or is this simply ...
2
votes
2answers
84 views

How to safely listen to my transmitted signal with a second receiver

I would like to listen to my own transmitted signal using a second receiver and connecting one into the other could possibly be a bad idea ;-) so How can I safely tap into my transmitted signal ...
2
votes
2answers
179 views

How much EMF does a typical scanner put out?

I am not terribly interested in hearing about whether or not EMF/RF is hazardous to ones health (as this is frequently discussed in my house). What I would like to know is; how much EMF/RF does an ...
11
votes
2answers
2k views

If I install a G5RV in my attic how could I be certain there are not harmful levels of RF in the shack, or my kids bedroom?

I assume that anyone who has a G5RV or G5RV junior in their attic has done so with ceramic spacers, and has zigzag or dog-leg installations, or otherwise has contorted the antenna to fit up there. My ...
6
votes
2answers
734 views

How to keep a disconnected coaxial connector weatherproof?

The advice I have seen on lightning safety is that if you don't have high-quality lightning protection (and associated grounding) installed on your feed line, it is advisable to, during a storm and ...
4
votes
1answer
1k views

DIY lightning arrester - gap size?

I have an antenna that's well above the treeline, and I've heard I can add some small amount of protection by placing two bolt heads a short distance from each other, one connected to the antenna, the ...
7
votes
3answers
4k views

What is the electrical shock risk of an antenna?

I've seen people refer to avoiding touching an antenna or bare transmission line that might be transmitting. What voltage potentials and currents are commonly found on typical ham radio antennas? Do ...
11
votes
4answers
1k views

How can RF exposure hurt you?

In studying for the exam, one question came up about RF Exposure. G0A 07 What effect does transmitter duty cycle have when evaluating RF exposure? My ...
7
votes
4answers
1k views

Has a vehicle magnetic antenna mount ever caused a road accident?

Some people believe that mag mount magnets lose their effectiveness over time, eventually causing a dangerous situation as the antenna could rip loose from the vehicle and become a projectile or ...
14
votes
5answers
5k views

How can I protect equipment against a lightning strike?

A lot of aerials (almost by design) would be rather good attractors of lightning. What steps do I need to take in the field to keep my gear safe against a lightning strike? I'm presuming the obvious ...