TUOLNK 4PCS SMA to TNC Coax Adapter, SMA TNC Coaxial Connector Kit SMA Male/Female to TNC Male/Female Cable Gender Changers for Radio, LTE Antenna Router etc

it is what you would expect

like

I'm so tired of having to cut and splice a connector these help a great deal. Only thing I don't like is I loose more signal compared to a standard old style splice not sure why.

I try to keep a sack full of different coax adapters for my radios. These are well made and priced nicely. I have not noticed any signal quality loss when using these.

This is a perfect little kit of SMA - TNC connector adapters. The machining is nice and they all screw together nicely with no rough spots. Performance wise I calibrated my NanoVNA for feedthru operation and just stacked all four adapters in a string. Then applied a 1MHz to 1GHz frequency sweep and noted the attenuation. The scale in the photo is 1dB per division. Up to about 500MHz the combined attenuation of four connectors is less than 0.5dB. Between 500MHz and 1GHz it never exceeds 1dB. Assuming the loss in each connector is equal that would indicate an insertion loss of less than 0.125dB below 500MHz and less then 0.25dB between 500MHz and 1GHz. Not too bad I say. Granted this isn’t a highly sophisticated test with expensive lab equipment, but these are are great little adapters. And a great value at less than $2.50 each.

I needed a way to adapt the input connector of my spectrum analyzer to SMA cables for small signal work and measurements. This set of four adapters appeared to be just the ticket. It’s essential to be aware, that these are NOT RP adapters, I mean they are not reverse polarity fittings so don’t think you can connect to your favorite WiFi router to a larger antenna. These won’t work~!~ That said, they appear to be nice connectors. I’ve looked them over closely and the machining seems good, and the threads are clean with no metal burrs. This set is a LOT less expensive than locally made fittings.

I use these to adapt various antennas and cables to my portable SWR meter and Nano-VNA. They work great for that purpose, fit snugly and don't seem to cause any noise or issues when connected to all the antennas I tried them with. I also used them to attach a long extension cable to a cellular signal booster antenna without any issues. Make sure you have the right connector types (SMA vs. RP-SMA, TNC vs RP-TNC) on your equipment.Overall a very handy addition to my adapter toolkit. Will definitely buy more if I end up installing one of them permanently.

Works, but the connection between the antenna and radio or cable will have some wobble.