On 09/30/2014 09:03 AM, Amber Lynn wrote:
In looking for some pre-amps with low noise figure, since my source of the past, Hamtronics, no longer makes theirs in a wideband or anything than a VHF configuration. (Seems they are on the road to clear out and shutdown from the looks of things, :( )
Have you looked at the products of Mini-Circuits Labs? They do make fully packaged and powered amplifiers, but they are quite expensive. They also make small integrated amplifiers that can be mounted on a microsrtrip circuit, with connectors and 5-volt power, and these tend to sell for just a few dollars each. You probably have to buy onesies from Mouser or someplace, I don't think MCL sells them in single unit quantities. Look up the company on the 'net and look for low noise amplifiers, surface mount. You can make a small microstrip board to mount the amplifier on out of FR4 circuit board. On a 60 mil board, a 50 Ohm line is 120 mil width. Just put the circuit together like the data sheet with connectors of your choice and apply 5V power and you're in like Flynn. --doug, WA2SAY
