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Amateur Radio

Amateur radio (also called ham radio) is the private and licensed use of selected radio bands for recreational purposes, experimentation, and emergency communication. Amateur radio operates under rules limiting the maximum power and technical characteristics of each transmission.

356 Questions

What equipment used in ham radio system?

Every ham radio station comprises, at an absolute minimum:

-- One (1) radio transmitter.

-- One (1) radio receiver.

-- One (1) antenna.

-- One (1) source of electrical power.

-- One (1) licensed operator, either in attendance

or responsible for the station's remote operation.

Any individual station may be enhanced, modified, embellished, or enlarged,

in virtually unlimited ways, from this absolute minimum list.

Is the 3G Rio's are negatively or positively grounded as I am going to be putting a ham radio in my car and it is one thing that the radio manual asked about.?

My suggestion is to take your voltmeter, measure the voltage between the center

pin and shell of the cigarette lighter socket in the car, and note the polarity there.

The shell is the grounded side of the lighter socket.

Why did Jason barr get fired?

Jason was let go on the request of Dean.They had a falling out in their personal life and Dean demanded Jason be fired. Something erupted at SausageFest and the team's vacation was extended to try and sort it out but in the end Dean threatend to walk away unless changes were made and Corus caved. Jason will be fine, he was given a large severance package, and already had offeres from other stations.

How do you make voltage probe?

To make a simple voltage probe, you can use an insulated wire connected to a multimeter. Strip one end of the wire and attach it to the positive terminal of the multimeter, while the other end will serve as the probe. For safety and accuracy, ensure the wire is insulated, and use a clip or a sharp point at the probe end to make contact with the circuit. Finally, connect the multimeter's negative terminal to a ground or reference point in the circuit.

What happened to all the bantan-tinytelephone plugs?

They're widely used for temporary interconnect on digital T1 DSX cross-connect patch-panels. Try searching for "bantam plug", "bantam jack", "bantam patch-cord", "T1 interconnect", etc.

Who decides when and where a test session will be held?

The VE team should agree on the location. This could also be left up to the VE liason.

Does cold weather effect wireless signals?

In general, normal cold weather does not affect wireless signals. However, extremely cold weather could cause issues for external antennae that are exposed to conditions.

Is optic predator dead?

I read that he died I'm not sure how tho.

Where can you get a manual for Micronta 22-206 FET VOM?

The part number 22-206 is a Radio Shack catalog number. You should be

contacting Radio Shack, or searching on their website.

What are the disadvantages of single sideband AM transmission?

An AM transmission, viewed on a spectrum analyser, has a carrier and two sidebands. AM transmissions are easy to generate, transmit and receive. This is the advantage of AM. AM is widely used for broadcast radio stations below 30MHz.

If a very high quality filter is used, the carrier and one sideband can be removed from an AM transmission. This is called single sideband (SSB). The main advantage of SSB is that it occupies less than half the spectrum space of an AM transmission so more than double the number of transmissions can fit into a given frequency band. This is the advantage of SSB. SSB is used by ships, aircraft and radio amateurs.

To receive SSB, the carrier has to be recreated in the receiver on exactly the right frequency. This makes SSB transmissions tricky to tune in. SSB has the nick name of "Donald Duck" because this is what it sounds like if the receiver tuning is not quite right. Also music is very difficult to tune in. This is the main disadvantage of SSB.

Is SWR the same as VSWR?

Yes, v stands for volts.Since the SWR (Standind Wave Ratio) is measured in volts is one and the same.

Was Mercury used in old radios?

Mercury would only appear an an old tube radio which uses a mercury-vapor rectifier.
These are pretty rare, and glow either green or blue, as opposed to a normal tube's orange/red color.

What are all the amateur bands between 1MHz and 1000MHz in amateur radio?

1.800 - 2.000 MHz.... 160 metres.

3.500 - 4.000.... 80 metres.

7.000 - 7.300.... 40 metres.

10.100 - 10.150.... 30 metres

14.000 - 14.350.... 20 metres.

18.068 - 18.168.... 17 metres.

21.000 - 21.450.... 15 metres

24.890 - 24.990....12 metres

28.000 - 29.700.... 10 metres.

50.000 - 54.000.... 6 metres.

144.000 - 148.000.... 2 metres.

219.000 - 220.000.... 1.25 metres

222.000 - 225.000.... 1.254 metres

420.000 - 450.000.... 70 cm

902.000 - 928.000.... 33 cm

Who invented the ham radio?

Radios are radios . . . some are used by broadcasters, some are used by the military, some are used by ordinary people, and some are used by amateur radio operators (Hams).

Guglielmo Marconi invented the radio. (Goo-LYEL-moe marr-CONE-ee)

Why did Austin leave the Candy and Potter show?

He left to "pursue other interests", but I've assumed that they couldn't afford to pay an extra person...

What elements does tungsten react with?

Tungsten primarily reacts with halogens, such as fluorine, chlorine, bromine, and iodine, forming various tungsten halides. It can also react with oxygen at high temperatures to form tungsten oxides. Additionally, tungsten may react with certain acids, such as hydrofluoric acid, and can form alloys with metals like nickel and iron under specific conditions. However, tungsten is generally considered to be a chemically resistant metal due to its high melting point and stability.

Difference between uhf and vhf?

The frequency. Oddly enough, uhf actually stands for Ultra High Frequency and vfh stands for Very High Frequency.

VHF for old TV covered the range 90Mhz to 150Mhz

UHF for modern TV covers the range 400Mhz to 800Mhz