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    Would greatly appreciate service manual or calibration procedure for Radioshack 21-527 MTA-20 Meter

    Hi Folks, Have been desperately trying to find out the procedure on how to calibrate my RadioShack 21-527 MTA-20 Meter. Does anyone here have the info on how to accomplish this please? Would appreciate a service manual copy if anyone by chance has this. Many Thanks in advance! God Bless! OtiS
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    Hi Retro CB Guy, Wasn't sure if you would see the message in the forums. I realize it was an old...

    Hi Retro CB Guy, Wasn't sure if you would see the message in the forums. I realize it was an old message but would you happen to still have a file on the 21-527 meter? I have one that needs calibrating and would sure appreciate any info on how to do it which seems impossible to find on the net...
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    Please ANYONE with service manual for Radio Shack MTA Digital Watt/SWR Meter

    Hi Retro CB Guy! I realize this is a very old message, but im in hopes you may still be willing and able to share this information. I have this meter and it works great, however it needs calibration and after much searching, ia ma unable to get the info on calibration. I would greatly...
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