hobbiesodd Posted November 2, 2018 Report Share Posted November 2, 2018 I have a bunch of SMa transmitters with the fixed antenna and would love to switch them over to removable sma style. The last time I had them serviced I asked Lectro if they could do it but they said no (even though they used to have the SM E01 transmitters with the sma antenna....) so I was wondering if anyone here knew of a way to mod my transmitters. Cheers, Evan Quote Link to comment Share on other sites More sharing options...
ryanpeds Posted November 3, 2018 Report Share Posted November 3, 2018 I would think you would have to completely disassemble the SM so that you could machine a larger hole into the spot where the antenna comes through. Quote Link to comment Share on other sites More sharing options...
hobbiesodd Posted November 19, 2018 Author Report Share Posted November 19, 2018 On 11/2/2018 at 8:14 PM, ryanpeds said: I would think you would have to completely disassemble the SM so that you could machine a larger hole into the spot where the antenna comes through. Yeah I was hoping to avoid that. Lectro made a series of SM (not SMV) transmitters with the removable antenna so I was hoping they had a system in place to just swap out the guts of my SMa ones into those older shells but I guess not. Cheers, Evan Quote Link to comment Share on other sites More sharing options...
mark kirchner Posted November 23, 2018 Report Share Posted November 23, 2018 https://wavreport.com/2017/03/25/tutorial-how-to-sma-your-lma/ Hi Evan, This is not the same transmitter, but it may help you decide if a SMa can be modified. I hope this helps. Mark Quote Link to comment Share on other sites More sharing options...
Diego Julca Posted August 14, 2022 Report Share Posted August 14, 2022 Hi Evan, It’s being a while since your post, but were you able to change the antennas of your SM Tx? thanks! Quote Link to comment Share on other sites More sharing options...
Matthew Steel Posted August 15, 2022 Report Share Posted August 15, 2022 If you want a look at the PCB without opening one up, there are internal photos with the FCC certification reports at https://www.fcc.gov/oet/ea/fccid In some cases FCC certification might depend on a non-removable antenna. If that is the case then such a mod would void the FCC certification. Obviously that would be one possible reason Lectro could not do it for you. I have noticed, though that for some devices with non-removable antennas, the model sent for testing had a removable antenna. The FCCID is on the outside of the case. If you want to guess at one without a device in hand, the grantee code for Lectrosonics is DBZ and the product code is usually some derivative of the model name. In the case of the SMa, it may well share the same FCCID as the original SM - since the (a) in the model designator indicated a change to servo bias input and might not have required recertification. Also, the single and double battery variants are electrically identical and share FCCIDs. There are separate IDs for different block ranges, such as (E)xtended, (L)ow, (M)id, and (H)igh. Quote Link to comment Share on other sites More sharing options...
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