60X Jewelers coins Loupe / Magnifier / Microscope with LED & Fluorescence Lights
Mar 09, 2016
Very useful for surface inspection
The loop Style mini microscope is very useful for inspection of surface qualities, cracks, knife edges, tooling cutting edges, and many things in addition to currency. The multiple LED lighting is especially useful.
This is quality BirD product that we use at hamfests and radio shows to test HF radios in the 50 to 200 Watt range. 30 dB attenuation protects the much more expensive HP and IFR Service Monitors. Conns are that it is bulky and heavy, but I do not believe you will find an lighter or much smaller, adiabatically cooled, through line attenuator, at this power level (200W). Nature of the beast.
techtooler
Mobile Radio Quad Band Antenna 144/220/350/440MHz for QYT KT-7900D Car Mobile...
Jan 24, 2021
Barely an antenna
Tested with a vector network analyzer. Out of the box, barely resonates in the advertised bands. Had to shorten elements to get the VSWR to acceptable limits. Usable but far from optimal.