Amateur Radio Stack Exchange
Amateur Radio Stack Exchange

Questions tagged [range]

Questions related to determining and improving the transmission distance of radio communications

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What is a link budget, and how do I make one?

Like the question title says, what is a radio link budget? For what is it useful, and how do I make one?
user
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What bands and modes will give me voice at 3,000 miles?

I pursued Amateur Radio primarily for local emergency communications and as part of my electronics education. My only radio right now is an inexpensive 2m/70cm HT which is good for local weather spotting and emergency operations. I'm interested in…
Adam Davis
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What is the power increase required to double the range of RADAR?

Studying for a Pivate Pilot's Licence (PPL) and I've hit something in the study material that doesn't make sense to me. Typical of the PPL study material, it's quite shallow, so the full explanation may have been omitted. To double the range of a…
Matt
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How to determine antenna height for given HF frequency and coverage radius?

I'm planning on setting up a low-HF antenna for near to mid-range contacts. In my particular case, ideally I would like to be able to cover a radius of approximately 1000-1200 km with good reliability, operating on 3.5 MHz and possibly supplanted by…
user
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Yagi vs Parabolic Dish for 2.4GHz Campus Wifi from 1,800ft away?

My apt balcony is 1,812 feet exactly from my campus's Wifi access point behind a triple pane, brick, 4th floor building window. There is a clear line of sight. I was interested in seeing if I could use a Yagi or a Dish to connect to it. I ran this…
Gabriel Fair
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What factors (out of operator control) can affect the range?

Some factors, such as the antenna type and power output can be easily adjusted by an operator to manipulate the range of a radio signal. However, others (such as the weather) are out of operator control. What such factors can affect the range of a…
berry120
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Can I estimate range of a low power transmission based on power (in mW)?

I've read that radio range is influenced by a lot more than the power output of the transmitter. From what I've seen, line of sight and interference can be much more significant factors. Is that also true for really low power transmissions, or is…
just.another.programmer
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Signal Range Test With One Person

I would like to test the range of my two HTs by myself while still operating legally. Anyone have any ideas of how I can accomplish this? The only way I could come up with was feeding audio into one at a fixed location with loop of my call sign. It…
ignorantham
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How far does a watt equal in range in the FM band?

How many watts would be needed to cover a 10 mile radius with good sound for music on the 88-108 MHz FM broadcast band? I am an amateur and for fun only.
Muze
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Transmitting to and from low earth orbit?

I'm a hobbyist and I'm currently thinking about building a CubeSat. I'm currently designing PCBs, casing, etc. I was wondering what variables are involved with sending data to and from 250 km - 350 km orbit using a frequency of 2.4 GHz and how I…
user2395615
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Difference between antennas for Wi-Fi vs. ham repeaters

I understand that Wi-Fi transmits on 2.4 GHz or 5 GHz whereas local ham repeaters transmit around 147 MHz or 450 MHz. What differences would be needed in antennas tuning into either of these frequencies, to account for the difference in frequencies,…
cr0
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Amateur Radio Long Distance Data Communication

My friends and I are going off to college ~180 miles/290 kilometres apart. As a project, we are looking into creating a data communication connection between our two schools. Our requirements would be: 180 mile/290 km range ~1 Mb/s connection speed…
Geoffrey Smith
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Radio Range vs. Frequency

Let's say you have two mobile simplex transceivers running on (for example) SSB. Mobile means that the antenna height and TX power have limitations. Say if we limit the Antenna height to 2m and the TX power to 100w. In an urban environment the…
Autistic
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Improving coverage of AIS receiving station

I have just set up my first AIS receiving station with compliments of Marinetraffic.com. They have supplied me with a Comar SLR350Ni receiver and a http://www.sirioantenne.it/en/products/vhf/gp-3-e antenna. I have already upgraded the cable to a…
johnmw1
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Could I expect 12 mile range with the GXT1000VP4 radios?

I’m considering buying a Midland GXT1000VP4 radio set from amazon here: https://www.amazon.com/dp/B001WMFYH4/ref=cm_sw_r_cp_api_6BfmBbBQZ5VBY In Suburban Pennsylvania how much range could I expect from these walkie-talkies? Could I possibly open…
Mark Deven
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