Here is some update on my low-cost extension board for the Agilent/HP counters.
Finally received all the components and assembled everything some days ago. Here is a picture : http://www.x86.fr/rfpsc/rf_psc_01.jpg. Right now, the performance is really good up to 3.5 GHz : 50 MHz : -7 dB 100 MHZ : -15 dB 250 MHz : -26 dB 500 MHz : -30 dB 1 GHZ : -32 dB 2 GHz : -32 dB 3 GHz : -30 dB Unfortunately, I have an odd issue with upper frequencies. The input of the prescaler is self-oscillating at about 3.7 GHz, even without any component on the input stage. The first prototype built doesn't have this issue. My goal is to reach 5-6 GHz with a good sensibility. Right now, I'm only able to measure -2 dB at 5 GHz. As soon as everything will work fine, I will put online an ordering process for bare PCB, kit and fully-assembled board. --------------------- Samuel DEMEULEMEESTER Presse Non Stop - Canard PC http://www.canardpc.com Tel : +33.6.13.73.4003 MSN : s...@x86.fr _______________________________________________ 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.