A good go box is a dual-band mobile radio, a fused 12 V power panel, an antenna jack and a printed frequency list, bolted into one case, with a LiFePO4 battery sized for the shift you'll work. Below are three builds by budget, the parts we'd buy for each, and the amp-hour math that tells you how big the battery has to be. None of the pages ranking for this search today gives you that math.
Quick picks
| Best case for build 2 | Gator GR-6S 6U shallow rack case | Amazon |
|---|---|---|
| Best battery for builds 1 and 2 | ECO-WORTHY 12V 20Ah LiFePO4 | Amazon |
| Best battery for 50 W and HF | ECO-WORTHY 12V 30Ah LiFePO4 | Amazon |
| Best charger | PZ.P 15-amp smart charger | Amazon |
| Best power panel | Nilight 4-in-1 socket panel | Amazon |
| Best antenna for build 3 | JYR8010 end-fed half-wave antenna | Amazon |
| Best bag for build 1 | Ham radio go bag (MOLLE) | Amazon |
How we picked the parts
We started from what ARES groups actually ask volunteers to bring, using the Santa Clara County ARES/RACES go-kit list (revision October 9, 2025) and the checklist in Ham Radio For Dummies. Then we matched each slot to parts that sell steadily on Amazon, using bought-in-past-month counts and ratings checked on October 21, 2026. Current draw for the power math comes from Icom's own spec pages. This is a spec review: we didn't build all three boxes for this page. How we research.
Three builds at a glance
| 1. Handheld go bag | 2. Mobile in a rack case | 3. HF plus battery | |
|---|---|---|---|
| Radio | Dual-band handheld (5 W) | 25-50 W dual-band mobile | 100 W HF rig (plus build 2 for local) |
| Reaches | Local repeaters from high ground | Local and county repeaters, simplex across town | Regional and beyond on 40 and 80 m |
| Power | Spare packs or a 12 V cord | 20-30 Ah LiFePO4 | 30 Ah+ LiFePO4 |
| Antenna | Longer whip, roll-up J-pole | Mag mount or portable mast | End-fed wire in a tree |
| License | Technician | Technician | General for most HF voice |
| Best for | Walking to a check-in point | A shelter, EOC or field shift | Parks, Field Day, regional nets |
How a go box is wired
Every build past the handheld bag uses the same layout. Power comes in once, through one main fuse, then splits to fused outputs. The antenna comes in once, through a bulkhead jack in the case wall, so you never open the box to connect coax.
Anderson Powerpole connectors appear on both ARES lists we read, and the SCC ARES list asks for Powerpole adapters along with cigarette-lighter and battery-clip leads, so you can take power from whatever is there. Use the radio's own fused DC cable from the radio to the distribution block, and keep that run short.
The power budget: how big a battery?
Battery size is a sum, and you can do it on a napkin:
Amp-hours needed = (transmit amps x hours transmitting) + (receive amps x hours listening), then add about 20% margin.
The amps come from the radio's spec sheet, not the box. How much of the shift you spend transmitting is your estimate. Our worked examples assume 10% transmit for a busy net and 20% for an HF park session where you're calling CQ; a quiet shelter shift transmits far less.
| Setup | Spec-sheet draw | Shift | Math | Battery |
|---|---|---|---|---|
| Icom IC-2730A at 50 W (build 2) | 13 A transmit; 1.2 A standby | 12 h, 10% transmit | 1.2 h x 13 = 15.6 Ah, plus 10.8 h x 1.2 = 13.0 Ah, = 28.6 Ah | 30 Ah LiFePO4, or 20 Ah if you drop to low power |
| Icom IC-7300 at 100 W (build 3) | 21 A transmit; 0.9 A standby | 4 h, 20% transmit | 0.8 h x 21 = 16.8 Ah, plus 3.2 h x 0.9 = 2.9 Ah, = 19.7 Ah | 30 Ah LiFePO4 (with margin) |
| Handheld (build 1) | See your radio's manual | 12 h | SCC ARES asks for at least 3000 mAh of packs | 2-3 spare packs |
Draw figures from Icom America's spec pages for the IC-2730A (13.8 V DC +/-15%; 1.8 A receive at max audio) and the IC-7300 (1.25 A receive at max audio), checked October 21, 2026. Icom lists one transmit figure at full power, so treat it as the ceiling.
Two things the math teaches. First, transmit power is the big lever: the same IC-2730A at its 5 W or 15 W setting draws much less than 13 A, so turning the power down stretches a battery further than buying a bigger one. Second, the listening current adds up over a long shift. In the IC-2730A example it's almost half the total.
Use LiFePO4 for the battery. A 12 V lithium iron phosphate battery holds its voltage near its 12.8 V rating for most of the discharge, which matters because the IC-2730A wants 13.8 V within 15% (about 11.7 V at the bottom). A sealed lead-acid battery sags toward that floor well before it's empty, and it doesn't like being drained deep, so you'd need roughly twice the rated amp-hours to get the same usable hours, and it weighs more for the same capacity.
One more number to check: the battery's BMS (its built-in protection board) has a current limit, and it has to be higher than the radio's transmit draw or the battery shuts off mid-transmission. The ECO-WORTHY 20 Ah below lists a 20 A BMS, which covers the IC-2730A's 13 A but not a 100 W HF rig's 21 A.
For home use, the same box runs from a 13.8 V bench supply. Sizing one is a separate topic: our ham radio power supply guide covers continuous versus surge ratings and RF noise.
The parts we'd buy
Radio choice is its own guide, so the cards below are the case and the parts that power and feed it. For the radio, our best mobile ham radios page compares eight. The AnyTone AT-778UVII is the budget choice there (25 W, 200 channels and a cooling fan; its listing says CHIRP isn't supported and no programming cable is included), and the Icom IC-2730A from the power table is the 50 W brand-name one.
Gator GR-6S 6U shallow rack case
This is the case in the best-known go box on page 1, the four young hams' build that SWLing Post featured, and it has 849 ratings on Amazon. Six rack units fits a mobile radio on a shelf, a power panel and a second radio or tuner, and the shallow 14.25-inch depth keeps the box short enough to carry through a doorway. Add vented rack shelves for the radios, and leave the front and back covers off while you operate so the heat sink can breathe.
- Size6U, 19-inch rails
- Rack depth14.25 in
- ShellABS with twist latches
- Railsthreaded steel, field replaceable
- Coversremovable front and rear
- Screws48 included
Why it stands out
- Gear stays bolted in and wired
- Front and rear covers protect the knobs and the jacks in transit
Think twice if
- You'll carry it far: a rack case with a battery inside gets heavy fast
ECO-WORTHY 12V 20Ah LiFePO4
Twenty amp-hours is the floor Santa Clara County ARES sets for a 12-hour mobile kit, and this battery showed 200 bought in the past month with 529 ratings when we checked. It meets the ARES 12-hour minimum for build 2, and it goes further if you keep the radio on low power. It also charges every handheld pack in build 1 several times over through a 12 V socket. The listing adds Bluetooth monitoring, so your phone shows the charge left, which is more useful than a voltmeter on a lithium battery.
- ChemistryLiFePO4
- Voltage12.8 V
- Capacity20 Ah
- BMS20 A, low-temperature cutoff
- MonitoringBluetooth app
- Weight5.4 lb
Why it stands out
- Hits the ARES 20 Ah minimum at a carryable weight
- Built-in battery management board
Think twice if
- You plan to run 50 W into a busy net all day; the power table says go to 30 Ah
- You'll run a 100 W HF rig from it: the 20 A BMS is below its draw
ECO-WORTHY 12V 30Ah LiFePO4
Both worked examples in the power table land just under 30 amp-hours: the IC-2730A at full power for 12 hours and the IC-7300 for an afternoon of HF. This is the size that covers them with margin, and the listing names ham radio in its title. It showed 100 bought in the past month with 332 ratings. The listing doesn't state the BMS current limit, so if you'll run 100 W HF, ask the seller to confirm it handles at least 21 A before you rely on it.
- ChemistryLiFePO4
- Voltage12.8 V
- Capacity30 Ah
- Cycles3000+ (listing)
- Protectionbuilt-in BMS (current rating not listed)
Why it stands out
- Covers a full-power 12-hour VHF shift or an HF afternoon
- Same brand and connector habits as the 20 Ah
Think twice if
- Your box is a handheld bag; this is more battery than it needs
- The seller can't confirm a BMS rating above your HF rig's draw
PZ.P 15-amp smart charger
A go box is only ready if its battery is full, and a dead battery found during an outage is the classic failure. This charger handles LiFePO4 as well as lead-acid, works as a maintainer between deployments, and was the best seller in our battery search at 2,000 bought in the past month with 571 ratings. Make a habit of topping up the battery on the first of the month.
- Output15 A at 12 V, 8 A at 24 V
- ChemistriesLiFePO4 and lead-acid (AGM, gel)
- Stages9, with float/maintain
- Screencolor, shows voltage, current and charge %
Why it stands out
- LiFePO4 mode, so it won't treat the lithium battery like lead-acid
- Maintainer mode for months on the shelf
Think twice if
- You'll charge only from the car or solar in the field
Nilight 4-in-1 socket panel
A panel like this goes on a blank rack plate or the case wall and gives you a 12 V socket and USB ports for phones and handheld chargers, plus an on/off switch, and its wiring has a 10 A fuse built in. The voltmeter is a quick health check: a lithium battery's voltage stays nearly flat and then falls fast near empty, so a dropping reading means it's time to turn the power down or swap batteries. It's a top seller with 3,586 ratings.
- Outputs12 V socket, dual USB (5 V, 2.1 A each)
- MeterLED voltmeter
- Switchon/off toggle
- Wiring10 A fuse built in
Why it stands out
- Low-battery warning at a glance
- Charges phones and handhelds from the go box battery
Think twice if
- You'd rather wire everything with Powerpoles only
JYR8010 end-fed half-wave antenna
An end-fed half-wave is the easiest HF antenna to put up at a park or shelter: one end goes up into a tree with a throw line, the other end connects at the radio. This one is rated for 150 W on SSB, so a 100 W rig is fine for voice nets, but turn down to 80 W or less for FT8, per the listing. It covers 40 and 80 m, where many regional nets meet, and the seller asks for about 3 m of clearance from obstacles. Our ham radio antenna guide has VHF and UHF options for builds 1 and 2.
- Bands80, 40, 30, 20, 17, 15, 12, 10 m
- Power150 W SSB, 120 W CW, 80 W FT8
- Transformer1:49 / 1:64
- Radiator40 m wire
Why it stands out
- No tuner needed on most bands, per the listing
- Covers 80 through 10 m
Think twice if
- You need VHF/UHF only; a mag mount or roll-up J-pole is simpler
Ham radio go bag (MOLLE)
Build 1 doesn't need a case. A pouch-heavy bag holds the handheld with its spare packs, a longer whip and a 12 V charging cord. The paperwork goes in a flat pocket, and the tear-away back means it rides on a vest or a pack. It has 83 ratings, so it's a smaller seller than the rest of this list. Any similar MOLLE bag works.
- Typeradio go bag
- Backtear-away hook and loop
- MountingMOLLE compatible
- Pocketsmulti-pocket for radios and cables (per listing)
Why it stands out
- Grab it and walk to your check-in point
- Holds paper and spares, not just the radio
Think twice if
- You operate for hours from a table; build 2 is more comfortable
Build 1: the handheld go bag
Start here if you're new or on a budget. A dual-band handheld you already own, two or three charged packs (SCC ARES asks for 3000 mAh or more for a 12-hour kit), a 12 V charging cord, an earpiece or headset, and a longer antenna. A better whip is the cheapest range upgrade you can buy for a handheld; the handheld ham radio guide has radios, and the antenna guide has the whips.
Add the paper: a printed list of your local nets and repeaters with their tones, a copy of your license, a pad with two pens, and a phonetic alphabet card for passing names and addresses. A waterproof mini reference card set with GMRS, FRS, MURS and ham frequencies is a reasonable backup to your own list.
Build 2: a mobile radio in a rack case
This is the go box most ARES groups mean. A 25-50 W dual-band mobile sits on a vented shelf in the rack case. The Powerpole distribution and the socket panel go on a blank plate, the battery rides in a separate box or the bottom of the case, and an SO-239 bulkhead coupler in the case wall takes the antenna. If the radio doesn't come with a mounting bracket that fits your shelf, a universal transceiver mounting bracket does the job.
For the antenna, carry two: a magnetic mount for the roof of whatever car is nearby, and a roll-up J-pole or a small base antenna on a mast. SCC ARES asks for at least 25 feet of 50-ohm coax and adapters for BNC, PL-259 and N connectors. Before the box goes on a shelf, check the antenna's SWR once with the coax you'll actually use.
Build 3: HF plus a bigger battery
Add HF when your group runs HF nets or you want to reach the next state when the local repeaters are down. A 100 W HF radio such as the Icom IC-7300 pulls about 21 A on transmit, so it gets its own heavier fused lead from the distribution block and a 30 Ah battery. Most HF voice needs a General license; Technicians have limited HF privileges, which our license levels page lays out.
Keep build 2 next to it. VHF/UHF still handles the local traffic, and many operators fit both radios in one 6U case.
The mistakes that end a deployment early
- Leave air around the radio. A mobile radio's heat sink needs open space when it transmits, and a closed case turns a long net into a thermal shutdown.
- Fuse the positive lead at the battery, within inches of the terminal, and fuse each load. The fuse protects the wire, so size it for the wire gauge.
- Strain-relieve every cable. Go boxes get dropped into car trunks; a Powerpole pulled half out is a classic "radio won't power on."
- Label everything: battery charge date, fuse sizes, the coax with its connector types.
- Keep the battery's voltage visible (the socket panel voltmeter does this) and stop before the radio's minimum.
No ham license? Build a GMRS go box
Everything above needs an amateur license to transmit: 47 CFR 97.5 requires a licensed operator before an amateur station goes on the air. If your goal is family communications, a GMRS go box is the faster route. The license is $35 with no exam and covers your immediate family, and the same case and wiring work with a GMRS mobile, battery included. Our GMRS radios for preppers page has the radios, and the family emergency radio plan is the paper that should ride in the lid. For a weather-alert and AM/FM receiver that needs no license at all, see our hand crank emergency radios.
Test it before you need it
Once a season, do a 30-minute drill. Take the box from the shelf to the car without opening it, set up at a park, check into a local net, and time how long it takes to get on the air. Note what you had to dig for, and fix that before you put the box back. Then recharge the battery and write the date on it. The box that comes off the shelf in a storm is the one you packed in that drill.
Sources checked October 21, 2026: Santa Clara County ARES/RACES go-kit list (rev. 2025-10-09); Ham Radio For Dummies go-kit checklist (H. Ward Silver); Icom America spec pages for the IC-2730A and IC-7300; eCFR 47 CFR 97.5 (Title 47 up to date as of October 19, 2026); Amazon listings and sales the same day. How we research · Affiliate disclosure