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Karl Matthias 馃嚭馃嚘
@relistan@mstdn.social  路  activity timestamp 3 months ago

Messing around with making inductors for a 2m band pass filter and measuring them with the NanoVNA. I made an OK-ish fixture with some RG-316, SMA connector, and alligator clips, and calibrated it with the fixture attached. Getting pretty close to the 100nH I need for these! #HamRadio #AmateurRadio

Series L shows 100.81 nH at 146Mhz
Series L shows 100.81 nH at 146Mhz
Series L shows 100.81 nH at 146Mhz
An electro-magnetic coil is held between two alligator clips.
An electro-magnetic coil is held between two alligator clips.
An electro-magnetic coil is held between two alligator clips.
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Karl Matthias 馃嚭馃嚘
@relistan@mstdn.social replied  路  activity timestamp 3 months ago

Apparently I should be aiming for higher Q than this. Will use a larger form and bare wire.

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Karl Matthias 馃嚭馃嚘
@relistan@mstdn.social replied  路  activity timestamp 3 months ago

Going to attempt again this weekend. It seems that 14 AWG wire at roughly 2 turns on a 1cm core, space by ~1mm will be close. Should have higher Q.

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