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Questions tagged [range]

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

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3answers
236 views

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:...
2
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3answers
159 views

Radio Range vs. Frequency [closed]

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 ...
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1answer
48 views

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 ...
1
vote
1answer
67 views

What does an antenna range really mean?

When I hear that a base camp antenna has a range of 15-50 Miles does that mean it could reach a radio with a small antenna within that range, or that it would need to reach a radio with the same ...
2
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2answers
89 views

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 ...
0
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1answer
64 views

RF Coverage range doesn't improve inspite of increased Tx power

I built an RF power amplifier with about 10 to 13 dB gain operating at about 100 MHz. It amplifies signal from about 50 to 100mW to about 1W. Inspite of the amplification, I don't see a real ...
2
votes
2answers
171 views

Distance of Received Signals

I received two UV5R plus radios a couple of years ago as a gift to use for hunting. I've never used them, but I now have time on my hands due to some medical issues so figured I'd play around with ...
3
votes
1answer
67 views

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 ...
0
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1answer
759 views

LoRa Radio RFM96/98 SX1276/8 configuration settings for Longest Range

I have a pair of HopeRF LoRa RFM98 Radio Modems(based on Semtech SX1278) and I want to configure them for the longest range possible, without taking care about any second factor like transmission time ...
2
votes
2answers
1k views

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.
1
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3answers
683 views

Better antenna for 433 MHz

I am using a FS1000a Transmitter and a MX-RM-5V Reciever for transmitting Sensor Data inside my flat to an Arduino Device. (13 Chars every 10 Seconds) The same Transmitter type is also used for ...
5
votes
3answers
3k views

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 ...
1
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1answer
40 views

Can I always see the other module?

I am planning to set up an ESP8266 mesh network. If node A receives beacons from node B, does this mean node B can receive beacons from node A? Assume they are the same (same antenna, ...)
3
votes
2answers
177 views

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 ...
2
votes
0answers
106 views

Transmitting to and from low earth orbit? [duplicate]

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 ...
0
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1answer
85 views

What does the current signal look like just south of Las Vegas? [closed]

I was wondering if it would be worth it to engage some of the hotels south of the strip to see if they would allow us to put a repeater on one of the buildings there. Just wondering as the Marriott, ...
4
votes
1answer
8k views

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 ...
14
votes
4answers
13k views

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 ...
22
votes
4answers
2k views

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?
1
vote
2answers
174 views

What are amateur radio bands? [closed]

I'm new to radio and would like to know what amateur radio bands are. I'm also wondering about the range of these bands/how many there are.
4
votes
1answer
71 views

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 ...