Seeed Studio Fiberglass
Seeed Studio | Part: 318020612
No description available
Comments from the Austin Mesh Community
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Specs
Brand
Seeed Studio
Part Number
318020612
Frequency
862-876 MHz, 902-928 MHz
Connector Type
N-Type Male
VSWR (915MHz)
2.088:1
Category
Fixed (Base) Antennas
Gain
5 dBi
Length
600 mm
Width
40 mm
Test Results
This page collects 1 independent VSWR test of the Seeed Studio Fiberglass, measured firsthand by the Mesh community (NB2E). Best measured VSWR is 2.09:1.
Test #1
VSWR Measurements
902MHz
VSWR: 3.393:1
915MHz
VSWR: 2.088:1
928MHz
VSWR: 3.347:1
Notes from test
Since there's no published datasheet for this antenna I can't say whether the abysmal SWR plot is within manufacturer specification or not. This antenna is offered by Seeed Studio as a higher gain antenna for the helium network, but at a 3.394:1 SWR would exhibit 5.275dB of return loss and 1.529 dB of mismatch loss (making their claimed 5dBi gain impossible.) If used in the 860-870MHz range where the VSWR is > 8:1 it would surely cause equipment damage.
Tested By
Ric Letson, NB2E (RicInNewMexico) on 14 February 2022