Xiegu G90 Review: The Tuner Is the Point

The short answer

Buy the G90 if you want the cheapest genuinely useful HF radio that will load almost any wire you can string up, because the wide range internal automatic tuner is what separates it from every other radio near the price. Skip it if you operate in a high noise urban location or need manufacturer support of the kind the Japanese brands provide.

Coverage: HF amateur bands
Output power: 20 W
Modes: SSB, CW, AM and FM
Antenna tuner: Wide range internal automatic tuner

Twenty watts and a wide range automatic tuner, for the price of a decent antenna analyser.

Best value HF radio

Xiegu G90 HF Transceiver, 20 W SSB, CW, AM and FM

Around $466

Twenty watt SDR HF transceiver with a detachable display head, a wide range internal automatic antenna tuner, a 48 kHz spectrum display with waterfall, and a built-in medium wave high pass filter.

Check price on Amazon

Specifications

Coverage	HF amateur bands
Output power	20 W
Modes	SSB, CW, AM and FM
Antenna tuner	Wide range internal automatic tuner
Display	Colour LCD with 48 kHz spectrum display and waterfall
Head unit	Detachable, for remote mounting
Filtering	Built-in medium wave broadcast high pass filter
Approximate price	Around $466

Specifications above come from Xiegu's published specifications and the manufacturer feature list for the G90. Treat pricing as approximate, since Amazon pricing moves.

What it does well

The wide range internal tuner is the headline. Very few radios anywhere near this price will load a random wire, and this one will.
Twenty watts is a meaningful step above five, roughly 6 dB, and it costs almost nothing in size or current.
The detachable head makes a tidy mobile or go box install possible.
The 48 kHz waterfall is small but genuinely useful for spotting activity.
A large owner community with a long history of firmware updates and documented modifications.

Where it falls short

Receiver performance is the compromise. It is serviceable and it is beaten clearly by radios costing three times as much, especially near strong signals.
There is no internal battery and no built-in speaker of any quality, so a field kit needs both.
Menus and documentation are noticeably less polished than the Japanese brands, and support is through dealers rather than a manufacturer network.
Twenty watts is still low power. On a poor antenna or a closed band it will not rescue you.

Why the tuner changes the maths

Most low power radios force you to bring a resonant antenna. That is fine on a planned activation and awkward when you arrive at a site and the only support is a tree in the wrong place. A wide range tuner turns that from a failed outing into a compromise that still works, and for field operating that flexibility is worth more than a few decibels of receiver performance.

What it does not do is make a short or badly sited antenna efficient. If you want the most out of 20 watts, put up as much wire as high as you can and use the tuner to clean up what is left. Size a starting point on the dipole length calculator or the end fed half wave calculator, and check what the feedline is costing you with the coax loss calculator. Your permitted bands and power come from your licence class and your national regulator, the FCC in the United States.

What owners report

Published owner reviews are dominated by one theme: the tuner. Operators describe throwing up whatever wire the site allows, letting the G90 match it, and making contacts, and they treat that as the radio's defining feature rather than a convenience. The 20 watt output is the second most praised item, because it is enough for SSB in a way that 5 watts often is not.

Criticism concentrates on the receiver and on polish. Owners in urban locations report more trouble with strong adjacent signals than owners in quiet ones, which is what you would expect at the price. The manual and the menu system are widely described as adequate rather than good, and support is a dealer matter rather than a manufacturer one.

A useful point that comes up often: the internal tuner will match a poor antenna, and matching is not the same as radiating. If the tuner is working hard, the loss is happening somewhere. Tuner versus resonant antenna explains where it goes, and the SWR calculator shows what the reflected power figure actually means.

Who it suits

Field and portable operators who cannot control what antenna support will be available.
New HF operators on a budget who want to make contacts rather than study specifications.
Anyone who wants a second radio for the car or a go box without spending base station money.
Operators in quiet locations, where the receiver's limits matter least.

Who should skip it

Urban operators fighting a high noise floor and strong local signals.
Anyone who wants a self contained portable with a battery inside. Look at the X6100.
Operators who need a manufacturer support network and polished documentation.
Anyone who needs more than 20 watts.

Alternatives worth considering

Self Contained Alternative

Xiegu X6100 HF and 50 MHz SDR Transceiver

Around $535

The same manufacturer's all-in-one, with a built-in battery, a nicer screen and 6 metre coverage, at 10 watts rather than 20. Better if you want one object to carry.

Check price on Amazon

Step-Up Alternative

Icom IC-705 HF, VHF and UHF All Mode Portable Transceiver

Around $1,600

A far better receiver, a far better display and VHF and UHF all mode, for over three times the price and with no internal tuner at all.

Check price on Amazon

Power Alternative

Yaesu FT-891 HF and 6 m All Mode Transceiver

Around $770

One hundred watts and a much better receiver for a few hundred more, at the cost of the internal tuner and the waterfall. The right call if you always have a vehicle battery.

Check price on Amazon

Keep reading

This review draws on published specifications, manufacturer figures and the consensus of verified owner reviews. We have not tested this product ourselves, and we say so rather than implying otherwise. As an Amazon Associate we earn from qualifying purchases.

Common questions

Questions people ask about this

Is the Xiegu G90 good for a beginner?

It is one of the easier ways into HF, mostly because the wide range internal tuner removes the most common beginner failure: an antenna that will not match. Twenty watts is enough for SSB contacts on an open band. The trade is a receiver that will not keep up with an Icom or Yaesu, and support that comes from dealers and the owner community rather than from a manufacturer network.

Will the G90 tuner match a random wire?

In most cases yes, which is unusual at this price and is the main reason people buy it. It has a genuinely wide matching range rather than the narrow correction range built into most base radios. Remember that a match is not efficiency: if the tuner is working hard to load a short wire, power is being lost in the antenna system rather than radiated, and more wire higher up is still the real fix.

Xiegu G90 vs Icom IC-705: which is better?

They are different purchases. The IC-705 costs over three times as much and gives you a much better receiver, a large touchscreen, VHF and UHF all mode and an internal battery, but no antenna tuner. The G90 gives you 20 watts and a tuner that will load nearly anything. For contacts per dollar in the field the G90 wins; for the nicer instrument the IC-705 does.

Is 20 watts enough for HF?

For SSB on an open band with a reasonable antenna, yes, and it is roughly 6 dB better than 5 watts, which is about one S unit. For digital modes such as FT8 it is more than enough. What it will not do is punch through a pileup or rescue a poor antenna. Antenna height and length matter more than the difference between 20 and 100 watts in almost every real situation.

Does the G90 work for digital modes?

Yes, with a suitable interface for audio and CAT control, and it is widely used for FT8. Reduce power for continuous duty modes since the radio has limited heat sinking, and watch the internal tuner: retuning under a digital transmission is not something to do casually. Check the manual for duty cycle guidance before running long sessions at full output.

Keeping your own cut lengths, SWR sweeps and exposure record? The Station Build & Antenna Planner is the paid version of these pages: 8 printable worksheets you fill in with your own numbers, plus the full PDF, $29.

Disclaimer Researched guidance for planning purposes, not professional engineering, electrical or legal advice. Antenna work, RF exposure, mast and tower work, grounding and battery handling all carry real risk that depends on your specific site and installation. Verify anything safety-critical against current FCC rules, the National Electrical Code and the manufacturer's own documentation, and hire a professional where the job calls for one. We research equipment from published specifications, regulatory documents and verified owner reviews rather than claiming hands-on testing we have not done.