Thanks for the info Bob, It does work. I just got my TM5006 travel test bench/ Tek TAS scope, Are we sure that is 12v? I will check by case type but behaves as the voltage is possibly too high. Only 15.2 mA draw at 12.000v very clean waveform, good gain. I have not modulated it yet. Working on stabilization. Maybe I am just being silly due to lack of sleep. Really cool toy, 100 mhz is correct, but pretty far off. I do not think it is a reject. but is possible. Thanks again. E1 = +12VDC, 25 mA max E2 = circuit ground E3 = modulation input, 0-10VDC, .4kHz/V to 1.2kHz/V, negative transfer E4 = case ground 100 MHz, +13 dBm output 40 ppm max, -18C to 75C --------------------------------------------------------------------- On Mon, Jun 8, 2009 at 1:30 AM, <brice@weaponeer.com> wrote: Vectron OXCO 233-5368-1 / WJ 708249-001 2.0" / 2.0" / 0.50" SMA output / mil spec, Al sheet surface mount, 4 mounting studs E1 orange / E2 black / E3 white / E4 (case ground) Probably FSN 5955-01-144-2344 Alt part # may be V26G893 . May be 100MHZ Can possibly get several more, new. Limited test equipment here, found conflicting data on part #'s. All needed is voltages or pinouts. Sounds silly, do not want to guess. Thanks, Bill William Rice Round Rock, Texas.