Most of the manpack builds I’ve written about center on HF, the FT-891 and G90 manpacks in particular. A digital voice manpack is a different animal, built around VHF/UHF digital voice for a different kind of portable capability entirely.
Why build a digital voice manpack at all
An HF manpack gets you long-distance contacts independent of any infrastructure. A digital voice manpack trades that range for something different: access to wide-reaching repeater and reflector networks, letting you reach hams anywhere in the world through internet-linked infrastructure as long as you can hit a local repeater. For travel, EmComm deployment, or just wanting a more capable portable VHF/UHF station than a handheld alone provides, it fills a genuinely different niche than an HF setup.
Choosing your mode: DMR vs D-STAR for portability
DMR mobile radios like the AnyTone AT-D578UV III Plus offer genuinely higher output power options and generally more affordable hardware, a real advantage if you’re building on a budget. D-STAR gear, mostly from Icom, costs more but offers the callsign-routing simplicity that makes reaching a specific station or reflector more straightforward than navigating DMR talkgroups. Either mode works for a manpack build, the choice mostly comes down to which network has better coverage where you’ll actually be operating and which mode you’re already invested in.
The core build
A digital voice manpack needs less power infrastructure than an HF setup, since VHF/UHF radios generally draw less current than an HF rig running real power. A compact LiFePO4 battery, a mobile digital voice radio rather than just a handheld for better output power and battery life, and a decent gain antenna, whether a roll-up j-pole or a compact mag-mount for hitting distant repeaters, round out the essential build. Keep the whole thing in a small backpack or sling bag, and you’ve got a capable, genuinely portable digital voice station that goes wherever you do.
Related reading: Choosing a Backpack for a Portable HF Setup · Setting Up APRS on the AnyTone AT-D578UV III Plus