RF Index / Austin Mesh
HomeAustin MeshContributeAbout
Back to Antennas
Heltec V3 Stock Internal Antenna
Not Suggested

Heltec V3 Stock Internal Antenna

Heltec | Part: UNKNOWN

$17.99USD

Small internal-style antenna on a u.FL/IPEX pigtail included with the Heltec LoRa 32 V3 and others, small enough to tuck inside a case.

Austin Mesh

Comments from the Austin Mesh Community

Convenient for fully enclosed builds, but the match is mediocre across the US ISM band and tuned high. Use it for size, not performance.

Links & Resources

Buy from RF Index ($17.99 (Includes Radio))
View Datasheet

Some links may be affiliate links. Any commissions support Austin Mesh at no extra cost to you.

Specs

Brand

Heltec

Part Number

UNKNOWN

Frequency

902-928 MHz

Connector Type

u.FL/IPEX

VSWR (915MHz)

2.450:1

Category

Internal Device Antennas

Gain

Unknown

Test Results

This page collects 2 independent VSWR tests of the Heltec V3 Stock Internal Antenna, measured firsthand by the Mesh community (KG5HZC). Every nanoVNA sweep is charted below and downloadable as a Touchstone (.s1p) file. Best measured VSWR is 1.61:1 near 950 MHz.

Test #1

Configuration

Ground plane: none

VSWR Measurements

902MHz

VSWR: 2.886:1

915MHz

VSWR: 2.450:1

928MHz

VSWR: 2.058:1

Resonant point: VSWR 1.606:1 at 950 MHz (101 points measured).

Notes from test

No notes available

Tested By

Tommy Ekstrand, KG5HZC on 2026-07-08

Download .s1p (Touchstone)

Test #2

Configuration

Ground plane: none

VSWR Measurements

902MHz

VSWR: 2.980:1

915MHz

VSWR: 2.535:1

928MHz

VSWR: 2.191:1

Resonant point: VSWR 1.708:1 at 950 MHz (101 points measured).

Notes from test

No notes available

Tested By

Tommy Ekstrand, KG5HZC on 2026-07-08

Download .s1p (Touchstone)

RF Index

HomeMeshtasticAntennasFiltersAbout

Contribute

Add a deviceRemove a deviceReport an issueRequest an updateSubmit antenna test data

© 2026 RF Index. Code: PolyForm Noncommercial 1.0.0 · Data: CC BY-NC-SA 4.0