No, it's Standing Wave Ratio. Don't use antennas with SWR value higher like 2 and you acquire less damages. It doesn't explain why some are faulty from the word go! You would see the radio slowly degrade. Our sectors, that I have VSWR prints after towers were commissioned that also run tik blow out...

More dead R52's, R5H's.

Im building quite a collection.

What is cooking these (NEW) cards, 24V into a 433 ?

Sorry for losing my cool ! Power levels are always set to default. Having a look at one of the R5H's the diode is blown. (top left) A few (new) R52 have poor signal issues or would not scan anything. I cant stress out more having a load on the rf ports before powering the cards up. Im looking into o...

Can I join the club? 3/10 failure rates! Are they even QA tested? I have one FAIL straight out the box. Seriously Id like to take one of these cards and shove it the sun don't shine Same goes with the R52. Don't even question me about antennas as every thing we do is to our ISO 9002 std. i.e ESD wor...