ARMER Coverage Maps
This is an attempt to provide an approximate coverage map for the various ARMER
systems for a scanner listener using the stock antenna. It is
assumed that an actual transceiver will have far greater sensitivity so range
pictured on the maps should not be inferred as actual system user
coverage.
The maps were created using the freeware program Radio
Mobile, version 8.05. Many, many thanks to the author of
the program Roger Coudé VE2DBE. Merci!
Comments on accuracy are requested. Email to: [email protected]
Please let me know your location, type of scanner, antenna type, system
monitored, indoor/outdoor, and estimated signal strength.
Technical details are included at the bottom of the page, any tweaks or
suggestions from radio techs or system experts would also be greatly
appreciated!
COLOR KEY 
Red:
Indoor: Strong, clear signal in all levels of average house, including basement.
Outdoor: strong
Green
Indoor - Slight degradation of signal, especially in lower levels of house or
thicker building materials.
Outdoor - Strong signal
Purple
Indoor - Weaker, choppy signal. No coverage in below grade or thicker
building materials
Outdoor - Some degradation, generally ok, some signal loss depending on
location.
Yellow
Indoor - Signal barely receivable with stock antenna, requires height and
directional antenna for reception.
Outdoor - Degraded signal, occasional coverage, improved with height or
antennal.
DOWNLOADS
T101 - MN
Metro
T102 - Anoka
County
T103 - Dakota
County
T104 - Carver
County
T106 - Isanti
County
T107 - Washington
County
T109 - Minneapolis
T125 - Goodhue/Rice
County
T201 - Hennepin
East
T202 - Hennepin
West
T203 - Ramsey
County
T219 - St
Cloud
T220 - Rochester
/ Olmstead County
(Note: Map file sizes are large, approximately 450kb in
size, not recommended for dial-up!)
Technical Details
Tower information including Lat/Long, Elevation, Tower Height, and TX power
from FCC online database.
Reception threshold & colors (Signal range: -67 to -107 dBm)
Red: -67 to -79 dBm
Green: -83 to -91 dBm
Purple: -95 to -99 dBm
Yellow: -103 to -107 dBm
Tower & Transmitter settings:
Transmit power: 22 watts / 43.4 dBm
Antenna type: Omni
Gain: 5 dBi / 2.85 dBd
Additional cable loss (dB/m): 0
Other
Antenna polarization: Vertical
Additional Loss: City / 20%
Surface refractivity: 301 N-Units
Ground Conductivity: 0.005 (S/m)
Relative ground permittivity: 15
Scanner receiver threshold: 1.78 microvolts
Copyright & Use Notice: Information contained on this website
is protected by copyright law. Copying this information to your own
website is STEALING! And charging $20 for it in book form is just
downright pathetic. This information is presented for personal use only
and may not be reposted, reprinted, or retransmitted without permission from the
Website author. Small sections of text may be reposed under FAIR USE laws
if appropriate attribution is given. In other words, please
respect the amount of work it takes to gather, organize, analyze, and post all
this stuff! Don't pass it off as your own work please.
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Corrections, additions, questions,
comments? Drop a line: [email protected]
