Questions tagged [repeater-coverage]
10 questions
18
votes
2 answers
How do I make a RF propagation map for a repeater?
Let's say I have a repeater. Knowing all of the information about antenna height and gain in each direction, as well as power, how can I create a map similar to this map I saw of a repeater in Illinois?
Free options are always better!
Skyler 440
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12
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How to do APRS in real wilderness?
I'm a relatively new ham (licensed a couple of years ago, occasional activity on 70cm and 2m, mostly repeaters). I'm looking to extend my ham experience and am interested in digital and packet modes.
I'm interested in APRS. The main reason is to…
hamster
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6
votes
3 answers
Is it possible to have 2 FM transmitters on the same frequency?
Has there been any success in transmitting two simultaneous FM signals? I am assuming if the phase is correct, and the signals are identical, it would be possible.
That would be really nice if newer repeaters could find a way to broadcast two…
Skyler 440
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5
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2 answers
Beginner listening to a repeater - only hearing one station
This morning I tuned in to a repeater about 12km from me (in the UK). I could hear activity, but from only one station. I could tell that there were other stations using that repeater from the comments of the station that I could hear. Why couldn't…
Adam
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5
votes
4 answers
How can I be sure I'm actually hitting the repeater?
I'm just starting to use 2m and 70cm bands, which normally use repeaters to extend range beyond a mile or two (limited mostly by line of sight, as I understand it).
When I'm at home, however, I'm not at all sure I have line of sight to any of the…
Zeiss Ikon
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4
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3 answers
Line of sight from geographic/map data?
I have line of sight issues with repeaters I want/need to use (it's a repeater network my club uses). One of the options that might be available to me is to install a "passive repeater" in a location that has line of sight both to my home and to…
Zeiss Ikon
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3
votes
2 answers
70cm antenna for an apartment
I have a blind friend who can't put anything outside, and is restricted to antennas near the window in his apartment. Luckily he lives closer to the top, which helps with range a little bit. He has a VoIP linked repeater at his apartment and while I…
Skyler 440
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2
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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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vote
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How to calculate passive repeater gain?
An active club in my area moved its repeater to a new location behind a big hill, and we can't join the regular social nets anymore. I'm not holding my breath that anyone in the gated HOA at the top of said hill would let me install any sort of…
natevw - AF7TB
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How to plot transmitter coverage area?
As an Extra class licensee, I should probably know this... I am working on a web application for repeater owners. I would like to include an estimated coverage area, provided they have entered all of the necessary information (power, DBi/Dbd,…
Joshua
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