I worked for Zeta Labs many years ago. This multiplier undoubtedly has a step recovery diode that is being driven at a level of a good watt or two. In most cases there was a hefty transistor to make this power. You probably need +10 dBm or so to drive it, maybe as much as +20 dBm. Take the cover off and look at the input section and it should be apparent if there is any additional gain. You can always start at 0 dBm and work up, looking at the power out as you go along. The adjustment of these can be very tricky, so proceed with extreme caution. Especially the SRD assembly. There were rows and rows of technicians with sweepers who tuned these up. The sweepers would sweep typically 80 to 120 MHz. Some of the techs liked to listen to the radio as they worked, and since this frequency range encompased the FM band, the radio would make a woodpecker like sound all day long.
The Zeta multipliers were fairly similar to the multiplier in the well known "brick" frequency sources (California Microwave, etc). Many people worked at both companies at various times. Rick Karlquist N6RK Matt Ettus wrote: > Just bought a > > Zeta Labs X76 Multiplier 7600 MHz Output Model 5856-01 > > on ebay. Anybody have any info on these? What kind of drive should I > give it? > > Thanks, > Matt > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
