Tenmory TB-CSA21
Tenmory | Part: TB-CSA21
7.5" 915MHz "3dBi" omni antenna. Hinged elbow design supposed to allow flexible orientation but severely impacts SWR.
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Specs
Brand
Tenmory
Part Number
TB-CSA21
Frequency
902-928 MHz
Connector Type
SMA Male
VSWR (915MHz)
1.178:1
Category
Portable Antennas
Gain
3 dBi
Length
194 mm
Width
13 mm
Test Results
This page collects 4 independent VSWR tests of the Tenmory TB-CSA21, measured firsthand by the Mesh community (KG5HZC, K1PDX). Every nanoVNA sweep is charted below and downloadable as a Touchstone (.s1p) file. Best measured VSWR is 1.03:1 near 927 MHz.
Test #1
Configuration
VSWR Measurements
902MHz
VSWR: 1.671:1
915MHz
VSWR: 1.311:1
928MHz
VSWR: 1.035:1
Resonant point: VSWR 1.026:1 at 927 MHz (101 points measured).
Notes from test
No notes available
Tested By
Tommy Ekstrand, KG5HZC on 2026-07-01
from Amazon, purchased 2024-02-01
Test #2
Configuration
VSWR Measurements
902MHz
VSWR: 3.808:1
915MHz
VSWR: 3.754:1
928MHz
VSWR: 3.655:1
Resonant point: VSWR 3.236:1 at 949 MHz (101 points measured).
Notes from test
No notes available
Tested By
Tommy Ekstrand, KG5HZC on 2026-07-01
from Amazon, purchased 2024-02-01
Test #3
Configuration
VSWR Measurements
902MHz
VSWR: 1.067:1
915MHz
VSWR: 1.178:1
928MHz
VSWR: 1.434:1
Notes from test
No notes available
Tested By
Ben Lipsey, K1PDX (pdxlocs) on 2023-06-20
Test #4
Configuration
VSWR Measurements
902MHz
VSWR: 2.259:1
915MHz
VSWR: 2.351:1
928MHz
VSWR: 2.521:1
Notes from test
No notes available
Tested By
Ben Lipsey, K1PDX (pdxlocs) on 2023-06-20