There is nothing special about the 5087A's amplifier cards. The 5087A design is not especially quiet; in fact, it will degrade the broadband floor of a Thunderbolt by a good 7 or 8 dB from what I have seen.
I'd say grab some PCB prototyping stock and a Dremel tool, and surf through Bruce's notes and references at http://www.ko4bb.com/~bruce/IsolationAmplifiers.html for some ideas. -- john, KE5FX > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of christopher hoover > Sent: Monday, July 07, 2008 6:55 PM > To: [email protected] > Subject: Re: [time-nuts] HP 5087A Input Doubler and 10 MHz Ampifiers > > > > "NE8S" <[EMAIL PROTECTED]> wrote: > > I am in need of the following Opt PCB's for the HP 5087A: > .... > > Qty. 11 5087-60012 (10 MHz Amplfiers) > > Good luck. I like to a have some more of these as well. > > I have considered doing a run of 60012 boards. This would be > straightforward except for one thing: I have been unable to find any spec > for the transformers. That part would have be to characterized. > > Note that you can convert 5MHz boards to 10MHz by changing a couple of > discrete component values. > > -ch > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
