Does a more powerful radio give more range than a better antenna?

Rarely. VHF and UHF radio signals travel roughly in straight lines, so range is set mostly by the radio horizon, which depends on antenna height. Raising an antenna from 6 feet to 25 feet roughly doubles its horizon distance. Doubling transmitter power adds 3 decibels, which is barely noticeable at the other end. For household radios, height and a quality antenna deliver more than watts.

What coax should I use for a GMRS or ham base antenna?

For UHF runs longer than about 25 feet, use a low-loss cable in the LMR-400 class. At 450 MHz, LMR-400 loses about 2.7 dB per 100 feet, RG-8X about 8.6 dB, and RG-58 about 10.6 dB. A 100-foot run of RG-58 at UHF would waste more than 90 percent of your power in the cable. Keep the run as short as possible and weatherproof every outdoor connector.

Can my HOA stop me from putting up a radio antenna?

Usually yes. The FCC's OTARD rule protects small satellite dishes and TV antennas, and it explicitly does not cover amateur, GMRS, or CB antennas. The FCC's PRB-1 policy limits what cities and counties can do to amateur antennas, but it does not override private covenants and HOA rules. Attic antennas, window-hung roll-up J-poles, and flagpole antennas are common lawful workarounds.

How do I ground an outdoor antenna?

The National Electrical Code, Article 810, requires the mast to be grounded, a listed antenna discharge unit on the coax where it enters the building, a grounding conductor no smaller than 10 AWG copper run as straight as practicable, and any separate ground rod bonded to the house's electrical grounding electrode system with at least 6 AWG. Grounding limits damage and reduces shock and fire risk. Disconnecting the coax and moving it away from equipment when storms approach adds a layer no arrestor provides.

What is the safest way to install a mobile radio in a vehicle?

Run both power leads directly to the battery with fuses in each lead near the battery, use the wire gauge the manual specifies, and never cut the fuse holders off. Mount the radio and route cables outside any air bag deployment area, which the vehicle owner's manual shows. Mount the antenna on the roof, check SWR before regular use, and keep occupants at least one to three feet from the antenna depending on power.

Home Self-reliance Communications Antennas and Radio Installs

Communications Preparedness

Antennas and installs. Height beats watts.

Most radio plans fail at the antenna, not the radio. This guide covers what actually extends your range, which cable to buy, what the rules and your HOA allow, and how to put it all up without touching a power line or inviting lightning indoors.

Choose your antenna Ground it right

The physics in one paragraph

Why height beats watts.

The radios in this section, from a $25 FRS pair to a GMRS base station to a ham handheld, all work on VHF or UHF frequencies. Signals at those frequencies travel in nearly straight lines. They do not follow the curve of the earth the way an AM broadcast station does at night. Your range is set by how far your antenna can "see" before the ground gets in the way, plus a small bonus from the atmosphere bending the signal slightly downward.

Engineers call that distance the radio horizon, and there is a simple rule for it: the horizon in miles is about 1.415 times the square root of the antenna height in feet.¹ Two stations add their horizons together. That single formula explains most of what people find surprising about radio range.

Here is what it says for the antenna heights a household actually has to work with.

Antenna height	Typical setup	Radio horizon	Two matching stations
6 ft	Handheld at head height	3.5 miles	7 miles
12 ft	Roll-up antenna in a second-floor window	4.9 miles	9.8 miles
25 ft	Base antenna on a short roof mast	7.1 miles	14.2 miles
40 ft	Mast on a two-story roof peak	8.9 miles	17.8 miles
500 ft	Repeater on a ridge	31.6 miles	Plus your own horizon

Flat terrain, clear path. Hills, buildings, and dense trees shorten every figure. The formula is a ceiling, not a promise.

Now compare that to power. Radio engineers measure changes in decibels, and doubling your transmitter power is a gain of 3 dB. At the receiving end, 3 dB is the smallest change most listeners can reliably notice. Going from a 5-watt handheld to a 50-watt mobile is 10 dB, a real improvement, but it does nothing to move the horizon. A signal that cannot see over a hill at 5 watts still cannot see over it at 50.

Height does two things at once. It pushes the horizon out, and it lifts the antenna above the houses, cars, and trees that absorb UHF signals near the ground. That is why the last row in the table matters most: a repeater on a ridge has a horizon of 30 miles or more, and any handheld within its footprint can use it. Reaching a repeater is the cheapest range upgrade available, and it costs nothing but a license and some programming, which the GMRS radio guide and ham radio guide both cover.

The practical order of upgrades, then, is not what the box suggests. Get the antenna higher. Get a better antenna. Get a better cable. Only after all three should you think about more power, and for many households that step never arrives.

Five rungs, from free to a Saturday's work

The antenna ladder.

Each rung adds real range. Stop at the one that covers the people you need to reach. Prices are for the antenna alone; cable and mounts are covered in the next two sections.

Rung 1 · Free

The stock antenna, used well

Hold the radio upright, not tilted like a phone. Get outside or to a window. Stand on the porch, the deck, or the top of the driveway. Move ten feet and try again; UHF signals have dead spots the size of a car. Most "my radios only reach two houses" complaints are solved on this rung.

Applies to every radio. FRS antennas are fixed to the radio by FCC rule and cannot be swapped.²

Rung 2 · $15 to $30

A longer handheld whip

GMRS and ham handhelds with removable antennas accept a 14 to 16 inch whip in place of the stubby one in the box. Expect a modest but real improvement in both directions, and much better performance when the radio is clipped to a belt or sitting in a cup holder. Buy one tuned for your band (GMRS at 462 to 467 MHz, or ham 2 m/70 cm dual band), with the connector your radio uses, usually SMA-female or SMA-male.

GMRS handhelds are limited by effective radiated power on channels 1 to 7 (5 W) and 8 to 14 (0.5 W), so a gain antenna on those channels can push a 5 W radio past the limit.³ Use channels 15 to 22 for the full benefit.

Rung 3 · $25 to $45

A roll-up J-pole

A J-pole made from flat ladder line rolls up to fit in a pocket, weighs a few ounces, and hangs from a curtain rod, a tree branch, or a hook in the attic. Connect it to your handheld with 10 to 25 feet of coax and the radio's horizon jumps from your hand to the top of the window. This is the single biggest range gain per dollar in the section, and it is the right answer for renters and apartments.

Hang it vertically, away from metal, with the coax dropping straight down. Buy one cut for your band.

Rung 4 · $40 to $120

A vehicle antenna

A quarter-wave or 5/8-wave antenna on a magnetic mount or a permanent NMO mount uses the vehicle's metal roof as half the antenna. Centered on the roof, it outperforms any handheld by a wide margin and turns a 15 to 50 watt mobile radio into a station that reaches repeaters from the next county. Roof center beats trunk lip beats fender, in that order.

Magnet mounts need a steel roof; aluminum and fiberglass roofs need a different mount. Installation safety is covered below.

Rung 5 · $80 to $250 plus mast

A base vertical on a mast

A fiberglass base antenna 5 to 8 feet long, on a 10 to 20 foot mast at the roof peak, puts the antenna 30 to 40 feet up. Fed with low-loss coax to a 25 to 50 watt base or mobile radio indoors, this is the neighborhood hub: it talks to every FRS radio on the block and reaches repeaters a handheld cannot. It is also the rung where grounding, lightning, and power line safety stop being optional reading.

Plan on a weekend, a helper, and reading the safety sections of this page first.

What gain figures mean

Reading the spec sheet

Antenna gain is quoted in dBi (relative to a theoretical point source) or dBd (relative to a simple dipole). Subtract 2.15 from a dBi figure to compare it to a dBd figure. A "5 dBi" base antenna is a fair, honest number. A "15 dBi" handheld whip is a fiction. Gain in a vertical antenna comes from squashing the signal toward the horizon, which is exactly what you want on flat ground and slightly less helpful in steep terrain.

Ignore any antenna that advertises range in miles. Range depends on height and terrain, not the antenna alone.

Where the watts go missing

Coax, connectors, and SWR.

The cable between the radio and the antenna is called coax, short for coaxial cable, and at UHF it eats power. The loss depends on the cable type, the frequency, and the length, and it applies to receiving as well as transmitting. Every 3 dB of cable loss cuts the power reaching your antenna in half and cuts the signal reaching your radio in half too.

The cheapest cable on the shelf is RG-58, the thin stuff that comes with magnet mounts. It is fine for the 12 feet inside a vehicle. It is a poor choice for a 75-foot run from an attic radio to a roof antenna. Here are the published figures at 450 MHz, the GMRS and 70 cm ham range.⁴⁵

Cable	Loss per 100 ft at 450 MHz	Power left after 50 ft	Sensible use
RG-58	10.6 dB	About 30%	Vehicle runs under 15 ft
RG-8X	8.6 dB	About 37%	Short jumpers, a J-pole in a window
RG-213	5.2 dB	About 55%	Acceptable base runs to 50 ft
LMR-400 class	2.7 dB	About 73%	Any base install; the default for roof antennas

Manufacturer typical values. "LMR-400 class" includes several brands built to the same 0.405-inch low-loss design; the loss figures are close across them.

Two rules follow from the table. First, keep the run short: put the radio near where the coax enters the house rather than across the basement. Second, for anything over about 25 feet at UHF, buy LMR-400 class cable. It costs roughly a dollar a foot with connectors and is the difference between a base station that works and one that disappoints.

Connectors

Handhelds use small SMA connectors. Mobile and base radios use the larger SO-239 socket, which takes a PL-259 plug. Base antennas often use an N connector, which is weatherproof by design. Buy adapters rather than forcing anything, and buy cable with factory-installed connectors until you have a reason to learn to solder them. Outdoors, wrap every joint with self-fusing silicone tape, then a layer of good electrical tape over that. Water inside coax is the most common cause of a base station that "used to work fine."

SWR, in plain English

SWR, or standing wave ratio, measures how well the antenna accepts the power the radio sends it. A perfect match is 1.0 to 1. Radio manufacturers typically ask for 1.5 to 1 or better; Yaesu's mobile manuals, for example, specify adjusting the antenna until SWR is 1.5 or less.⁶ Below 2.0 to 1 you are fine. Above 3.0 to 1 something is wrong: the wrong antenna for the band, a bad connector, water in the cable, or an antenna with no ground plane under it. Modern radios protect themselves by cutting power when SWR is high, so a bad match does not usually destroy the radio, but it does quietly destroy your range.

A basic SWR meter for VHF and UHF costs $40 to $60 and sits inline between radio and coax while you press the transmit button for a second or two. Check SWR when you install an antenna, after any storm that could have shifted it, and once a year regardless. Never transmit with no antenna connected; that is the one way a mismatch can actually damage the transmitter.

What is actually allowed

The FCC, your HOA, and your landlord.

Three different sets of rules, and people routinely confuse them. Here is who controls what.

1. The FCC sets the radio rules

FRS radios must have a fixed, non-removable antenna with no more gain than a dipole; that is what keeps them license-free.² GMRS has no federal antenna height limit of its own; the only federal constraint is the general Part 17 rule that applies to structures over 200 feet or near airports, which a household mast will never approach.⁷ CB antennas are capped at 60 feet above ground or 20 feet above the building or tree they sit on, whichever is higher.⁷ Amateur antennas have no federal height limit below the same 200-foot Part 17 threshold.

2. Cities and counties can regulate, within limits, for hams only

In 1985 the FCC issued a policy called PRB-1 that requires state and local governments to "reasonably accommodate" amateur radio antennas and apply the "minimum practicable regulation." Many towns still require a permit for a mast or tower, and that is legal; a flat ban is not. PRB-1 applies only to amateur radio, not to GMRS or CB, and it applies only to governments.⁸

3. HOAs and landlords can say no

This is where most people are misinformed. The FCC's OTARD rule, which protects your right to a satellite dish or TV antenna in an area you exclusively control, says in plain terms that it does not apply to amateur, CB, or AM/FM antennas.⁹ The FCC has also declined to extend PRB-1 to private covenants and HOA rules.⁸ If your deed restrictions prohibit exterior antennas, an outdoor mast is a violation regardless of what the FCC allows. Ask first, in writing. Many HOAs approve a modest antenna that is not visible from the street once someone explains it is for emergency communication.

Lawful workarounds that work

Attic antenna. A J-pole or small vertical hung from a rafter works well through asphalt shingles and wood. Expect roughly half the range of the same antenna outdoors. It does not work under a metal roof or foil-faced radiant barrier, which block UHF nearly completely.
Window J-pole. The roll-up J-pole from Rung 3 hangs inside a window facing the people you need to reach. Upper floors help. Nothing is visible outside.
Flagpole antenna. Several makers sell fiberglass flagpoles with a vertical antenna inside. HOAs that ban antennas almost never ban flagpoles. Performance is fair, not great, and the coax still needs the grounding treatment below.
Renters. Nothing that penetrates a wall or roof. A magnet-mount antenna sitting on a steel cookie sheet on a high shelf near a window is a real, if humble, base antenna. A vehicle install is fully portable and needs no permission.
Repeaters. If a repeater covers your area, a handheld with a good whip at a window may outperform any antenna you could legally erect. Check coverage before you fight the HOA.

The part that has killed people

Power lines and ladders.

In the late 1970s, home antennas were the leading cause of consumer product electrocutions in the United States. The Consumer Product Safety Commission counted roughly 220 deaths in 1975 and 275 in 1976, almost all from an antenna or mast touching an overhead power line while it was being raised or taken down.¹⁰ Between 1990 and 1998, after warning labels became mandatory, more than 300 people were still electrocuted holding an antenna or pole that touched a line, and about 150 more died when a ladder did.¹¹

The mechanism is simple. A 20-foot mast with an antenna on top is 25 to 30 feet of conductor that you are holding at the bottom while it sways. If it falls toward a service drop or a distribution line, you are the path to ground. Insulation on the line does not help; the CPSC's guidance is to assume every overhead line is lethal.¹¹

Every rule below comes from the CPSC's published guidance and the National Electrical Code. None of it is optional and none of it is difficult.

Before you buy a mast

Walk the yard and roof and find every overhead wire: the service drop to your house, the neighbor's drop, lines along the alley or road, and cable and phone lines, which can be hard to tell from power lines.
Measure. The CPSC's rule is that the distance from the installation point to any power line must be at least one and a half times the total height of the antenna and mast, and more if at all possible.¹⁰ A 30-foot assembly needs 45 feet of clearance in every direction it could fall.
The NEC separately requires outdoor antennas and lead-in cables to stay at least 2 feet from exposed electric power conductors, and prohibits routing them over or under open power lines.¹²
If the clearance is not there, move the antenna, shorten the mast, or go to the attic. There is no third option.

On installation day

Two adults, minimum. One on the mast, one watching the lines and the ladder. Dry, calm weather. Never in wind, never at dusk.
Use a fiberglass ladder, never aluminum, and set it where neither you nor the ladder can reach a line if either falls.¹¹
Assemble the antenna and mast on the ground, attach the coax, then raise the assembly with the base pinned and a helper on a rope. Do not carry an assembled mast up a ladder.
When taking down an old antenna, check for lines that were added after it went up.¹¹ If anything touches a wire, do not grab the person. Call 911 and the utility.
Roof work is fall work. If you would not be comfortable replacing a shingle where the mast goes, hire the mast installation and do the wiring yourself.

National Electrical Code, Article 810

Grounding and lightning.

An outdoor antenna is a metal object on your roof connected by a wire to a box in your living room. The code requirements below exist so that a nearby strike, or a static charge built up on a windy day, has somewhere to go other than through your radio, your wiring, or you.

Article 810 of the National Electrical Code covers radio and television antenna systems, including amateur and other transmitting stations, and it is adopted into law by state and local governments across the country.¹² Its requirements fit on one card, and every one of them is a real safety measure, not paperwork.

1. Ground the mast

Any metal mast or structure that supports an antenna must be bonded to ground. Bonding is the electrical connection that keeps two metal objects at the same voltage; an unbonded mast can flash over to nearby wiring or a gutter during a surge.¹²

2. Put a listed discharge unit on the coax where it enters

Each lead-in cable needs a listed antenna discharge unit, sold as a coax lightning arrestor or surge protector, installed outside or as close as practicable to where the cable enters the building, and grounded.¹² A gas-discharge type in the $40 to $80 range, with connectors matching your coax, is the household standard. "Listed" means tested by UL or an equivalent laboratory; the listing mark is on the body.

3. Use 10 AWG copper or heavier, run straight

The grounding conductor from the mast and from the discharge unit must be copper or another corrosion-resistant metal, no smaller than 10 AWG copper, run in as straight a line as practicable, and protected where it could be damaged.¹²¹³ Lightning does not like corners; a tight bend is a place for a surge to jump off the wire.

4. Bond to the house ground, not a lonely rod

The grounding conductor terminates at the building's intersystem bonding termination if it has one, or else at the electrical service grounding electrode system.¹³ If you drive a separate ground rod for the antenna, the code requires you to bond that rod to the house's electrical ground with a conductor no smaller than 6 AWG.¹³ This is the rule people skip, and it is the dangerous one to skip: two separate grounds sit at different voltages during a surge, and the difference between them travels through your radio and your house wiring to even out.

5. Use listed clamps, never solder alone

Connections to ground rods and bonding points must be made with listed clamps, lugs, or pressure connectors, or by exothermic welding. A soldered-only joint is not acceptable because a lightning surge can melt it.¹³ Ground rod clamps cost a few dollars at any hardware store.

Two honest notes. First, Article 810 is about limiting damage and preventing shock and fire from surges and near strikes. A full lightning protection system for a building, with air terminals and down conductors, is a separate discipline governed by NFPA 780, and nothing on this page makes a direct hit safe.¹⁴ Second, the cheapest protection is also the oldest: when storms are forecast, disconnect the coax from the radio, and move the connector away from the equipment and anything grounded. Yaesu's own mobile manual tells owners to cut power and disconnect the external antenna when a lightning alarm sounds.⁶ A radio that is not connected to anything cannot be reached by anything.

If you want the long version, the ARRL publishes a book-length treatment, Grounding and Bonding for the Radio Amateur, that walks through the single-point ground panel most serious stations use.¹⁵ For a household GMRS or ham base, the five steps above, done with listed parts, are the standard to meet.

Mobile radios done properly

Installing a radio in a vehicle.

A 15 to 50 watt mobile radio with a roof antenna is the most capable station most households will ever own, and a vehicle is the one place you can install one without asking anyone's permission. It is also a place where a careless install can start a fire under the dash or put a metal box in front of an air bag. The radio manufacturers agree on the rules; here they are in order.

1. Power comes straight from the battery, fused

Run both the red and the black lead directly to the battery terminals, not to the fuse box and never to the cigarette lighter socket, which cannot carry the current a transmitting radio draws. Every mobile radio ships with a power cable that has a fuse holder in each lead, and the manuals are blunt: never cut the fuse holders off, and never substitute a fuse of a different rating.⁶ Keep the fuses within a foot or two of the battery so the entire run is protected. If you must extend the supplied cable, use wire at least as heavy as the cable the radio came with, and never thinner; a thin extension heats up under transmit current.

2. Stay out of the air bag zone

Motorola's installation guidance for every mobile radio it sells says the same thing: check the vehicle manufacturer's manual before installing any electronics, and do not mount a radio or route cables over an air bag or in its deployment area, because an inflating bag can propel the radio with enough force to cause serious injury.¹⁶ Your owner's manual shows the deployment zones. Common safe locations are under the dash on the passenger side, in a center console, or under a seat with a remote control head on a bracket outside the zone.

3. Route cables where they cannot be pinched or kicked

Coax and power leads go under trim, behind kick panels, and through existing firewall grommets. Nothing near the pedals, the steering column, or the seat rails. Leave a service loop at the radio. Where the coax passes through the door seal to a magnet mount, expect the jacket to wear; inspect it each season.

4. Put the antenna on the roof, and mind the people inside

The center of a steel roof gives the antenna the ground plane it needs and keeps it as far as possible from the occupants. That distance matters. Motorola's RF exposure table for vehicle installs calls for at least 1 foot between the antenna and any occupant for radios of 7 to 15 watts, 2 feet for 16 to 50 watts, and 3 feet above 50 watts.¹⁶ A trunk-lip mount two feet behind the rear headrests fails that test for a 50-watt radio; a roof mount passes it. If you use a magnet mount, confirm it is rated for the antenna's length and weight so it stays put at highway speed.¹⁷

5. Check SWR and check for interference before you rely on it

With the engine off, check SWR and trim or adjust the antenna to 1.5 or better.⁶ Then start the engine and, parked safely, transmit while watching for anything odd: dash warning lights, wipers twitching, engine speed changing. Icom's installation guide has a formal checklist for exactly this, and if the vehicle does anything unexpected when you transmit, it says to stop and get expert help before driving with the radio in use.¹⁷ Finally, do not operate a radio while driving. Yaesu's manual prohibits it outright and tells the driver to stop in a safe place first.⁶

Distance, power, and time

Staying inside the exposure limits.

Radio transmitters emit non-ionizing energy. It does not damage cells the way X-rays do; at high enough levels it heats tissue, and the FCC's exposure limits are set well below the point where that heating is measurable. Household radios operate far under those limits when used as designed. Two habits keep them there.

The first is distance. Exposure falls off quickly with distance from the antenna, so a base antenna on a mast above the roof is a non-issue for the people in the house below, while the same antenna mounted on a deck railing beside a bedroom window is worth moving. For handhelds, follow the manufacturer's instruction about how far from your face to hold the radio when transmitting; the Yaesu manual's version is simply to stay as far from the antenna as possible while transmitting and never to touch it.⁶ For vehicles, use the Motorola distances above.

The second is paperwork, for amateur licensees only. Since May 2021, the FCC has required every amateur station to be either evaluated against the exposure limits or shown to be exempt; the old blanket exemption for stations under 50 watts is gone.¹⁸ The evaluation is not a measurement. For a typical VHF or UHF base, it is a lookup in the FCC's OET Bulletin 65 Supplement B or the ARRL's online calculator, takes about ten minutes, and goes in your station records.¹⁹ Most household stations pass with room to spare; the exercise mainly tells you how far from the antenna a person can safely stand while you transmit, which is worth knowing regardless.

Learn from other people's weekends

Common mistakes.

Buying watts before height

A 50-watt radio feeding a stock antenna on the kitchen counter reaches about as far as the 5-watt handheld it replaced. Spend the same money on a J-pole and 25 feet of coax first.

Running 75 feet of RG-58

At UHF that cable delivers about a fifth of your power to the antenna and throws away most of what the antenna hears. It is the most common reason a new base station underperforms a handheld on the porch.

A separate, unbonded ground rod

It feels safer and it is the opposite. Two grounds at different voltages during a surge push current through the radio and the house wiring. Bond the rod to the electrical ground with 6 AWG or heavier.

Never measuring SWR

A base antenna that was fine in June can be a 4-to-1 mismatch in November after water gets into a connector. A $40 meter and two minutes a year catches it.

Estimating power line clearance by eye

People consistently underestimate how far a falling mast reaches and overestimate how far away a line is. Measure with a tape. If it is not one and a half times the mast height, it is not far enough.

Wiring the mobile radio to the fuse box

Vehicle circuits are not sized for a transmitter's current draw, and the radio's voltage sags every time you key up. Both leads to the battery, both fused, every time.

Where to go from here

Sources

Where this information comes from.

All sources accessed September 5, 2026. Safety figures come from the CPSC, the National Electrical Code, the FCC, and the radio manufacturers' own manuals.

Repeater Builder. "A Quick Overview of the Radio Horizon." The 1.415 times square root of height formula and the two-station sum. repeater-builder.com
47 CFR 95.587, FRS additional requirements. Antenna must be a non-removable integral part of the unit with gain no greater than a half-wave dipole. ecfr.gov
47 CFR 95.1767, GMRS transmitting power limits. 50 W output on main channels; 5 W ERP on 462 MHz interstitial channels; 0.5 W ERP on 467 MHz interstitial channels. ecfr.gov
Times Microwave Systems. LMR-400 datasheet: 2.7 dB per 100 ft attenuation at 450 MHz. timesmicrowave.com
W4RP. "Coax Attenuation Chart," compiled from manufacturer data: RG-58 10.6 dB, RG-8X 8.6 dB, RG-213 5.2 dB per 100 ft at 450 MHz. w4rp.com
Yaesu. FTM-300DR/DE Operating Manual, safety precautions and antenna installation: SWR of 1.5 or less, do not cut fuse holders, do not use while driving, disconnect the external antenna when a lightning alarm sounds, stay away from the antenna while transmitting. yaesu manual (PDF)
47 CFR 95.317 (Part 17 antenna structure rules apply to all Personal Radio Services; 200 ft threshold and airport proximity) and 47 CFR 95.941 (CBRS antenna height limits). Note: 47 CFR 95.1741, the former GMRS-specific height section, is shown as Reserved in the current eCFR following a December 2025 amendment; 95.317 continues to apply. law.cornell.edu
FCC. Memorandum Opinion and Order FCC 01-372, denying ARRL's request to extend PRB-1 preemption to private covenants and HOA rules; summarizes PRB-1's "reasonable accommodation" and "minimum practicable regulation" standard for state and local governments. fcc.gov (PDF)
FCC. "Over-the-Air Reception Devices Rule." States that the rule does not apply to antennas used for AM/FM, amateur, CB, or digital audio radio. fcc.gov
U.S. Consumer Product Safety Commission. "CB/TV Antenna Regulation," 1978. Electrocution counts for 1975 and 1976 and the one-and-one-half-times-height clearance rule. cpsc.gov
U.S. Consumer Product Safety Commission. "CPSC Alerts Consumers To Electrocution Hazards From Overhead Power Lines," 2002. 1990 to 1998 antenna and ladder electrocution counts and installation precautions. cpsc.gov
NFPA 70, National Electrical Code, Article 810, Antenna Systems: 810.13 (clearance from power conductors), 810.15 (mast grounding), 810.20 (antenna discharge units), 810.21 (bonding and grounding conductors). Summarized in Mike Holt Enterprises, "Article 810, Radio and Television Equipment." mikeholt.com (PDF)
NFPA 70, Article 810.21, Bonding Conductors and Grounding Electrode Conductors: 10 AWG copper minimum, straight run, termination at the intersystem bonding termination or grounding electrode system, 6 AWG bonding of any separate rod, listed connectors. up.codes
Reeve, W. "Antenna System Bonding and Grounding Requirements in the National Electrical Code." Practical walkthrough of Article 810 and reference to NFPA 780, Standard for the Installation of Lightning Protection Systems. reeve.com (PDF)
ARRL. Grounding and Bonding for the Radio Amateur, resource page. arrl.org
Motorola Solutions. Guidelines and Operating Instructions for Mobile Two-Way Radios (FCC equipment authorization exhibit): air bag deployment area warning and the minimum lateral distance table for vehicle-installed antennas. fcc.report (PDF)
Icom. Mobile Radio Installation: Guide to Installing Mobile Radio Transceivers in Vehicles. Magnet mount rating, VSWR check, static and moving operational checks, and stopping for expert help if the vehicle misbehaves. manualslib.com
ARRL. "Additional Information for Amateur Radio Operators," RF safety, June 2021. Summarizes FCC 19-126: exposure evaluation required for all amateur stations from May 3, 2021, with existing stations due by May 3, 2023. arrl.org (PDF)
FCC Office of Engineering and Technology. OET Bulletin 65, Supplement B: Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, Amateur Radio Stations. fcc.gov (PDF)