I am not an RF engineer but play one at work. I am working in uhf SatCom. In the lab, In order to test two radios communicating over a satellite, I built a small RF circuit out of cots components. I basically put a mixer between the two radios and inject the delta of the uplink and downlink...
I am working on some UHF SATCOM test equipment. We currently have a Trilithic FD1000 Diplexer that works to split/combine the TX and RX, so that radios that have a single RF port can be hooked to radios that have separate RX and TX ports. Unfortunately this FD1000 is pretty expensive and we...
I am not an RF engineer, but I am working with UHF satcom and would like to build a small portable Satellite simulator. The simulator needs a 41MHz 1dBm Rf input to up/down convert the uplink to the downlink. In the lab I use a large bench top HP signal generator to provide this signal.
I...
I have a USB monitoring device, that once a certain data pattern is found, triggers out a small 4-5V pulse. The pulse is very small, about 400ns. It seems to be too small to be detected on a RS-232 Clear-To-Send (CTS)input pin. I am using a USB RS-232 dongle (Keyspan USA-19HS) as an input to...
I am currently working to improve a product of ours that is a rugged, embedded, man wearable computer enclosure. Our customer would like to implement an audible alarm or better yet, a speaker to play prerecorded audible warnings.
The current design is a simple 3" x 6" two piece machined...
