Tutorial: How to SMA your LMa

Because putting SMA ports on things is cool @JacobVarley said why not put one on a Lectrosonics LMa. A LMa housing couldn’t be too different then the um400a right?

Warning: The following video tutorial very hard.

But wait, there’s more!

Jacob ends the video by saying that it is a very labor intensive mod and if you want him to do it to message him and he’ll work out a price.

Paul Dorough watched Jacob’s video, attempted the mod and made a slight change. Paul’s changes involve using a band saw to remove the metal block and using a panel mount SMA connector.

“What I did was took out the antenna, then I tinned 18awg wire about a quarter inch and soldered the tinned wire to the contact on the board.” He then said  “Then I tinned the straight pin on the sma connector. I soldered the wire to the pin as they were in contact, side by side.” The wire is then heat shrinked to prevent grounding and shorts.

“Cutting the block can also be done with a small hand saw with teeth made to cut metal.”

Photo Courtesy from Paul Dorough
Photo Courtesy from Paul Dorough
Photo Courtesy of Paul Dorough

In speaking with Paul he said the overall performance was the same but he was happy that he could store his Lectrosonics LMa easier, prevent damage, and now able to use it for car to car monitoring. 

Go subscribe to Jacob’s youtube channel!!! He’s always inventing new RF methods for audio engineering.

profile-picAbout the Author

Andrew Jones is a location sound mixer based in Los Angeles. He started in the TV and Film industry in 2004. You can email him at  Andrew@HoldForSound.com



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