John & Skip, as I am getting 5 such oscillators, I will open 2 or three (after measurements of the PN ) and apply some magic... To build something like this mechanically will be tough. The technology and circuit design will have changed a lot in 10 + years, so I will try. Opening the units may be the tough part. 73 de Ulrich xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxx I have a few of the 500-6769 parts here, and measured a couple of them awhile back: http://www.ke5fx.com/Wenzel_500_06769_PN.png
Not a bad price at all. If a $2000 OCXO can achieve -140 dBc/Hz at 100 Hz and a $50 OCXO will do -117, that's almost 10 dB better than the expected 20*log10($2000 / $50) ratio. :) -- john, KE5FX Miles Design LLC In a message dated 12/5/2014 2:26:24 P.M. Eastern Standard Time, ka2...@aol.com writes: I can measure all things, if you need help, tell me ! Ulrich In a message dated 12/5/2014 2:13:34 P.M. Eastern Standard Time, skip.with...@gmail.com writes: Hello Ulrich, The units have been paid for and are being sent Priority Mail. Pleasure doing business with you. If you have any feedback on what the phase noise does look like I would certainly be interested in the data. Regards, Skip Withrow On Fri, Dec 5, 2014 at 11:06 AM, <_KA2WEU@aol.com_ (mailto:ka2...@aol.com) > wrote: Skip, can I have 5 , mail to me , how would you like to get paid ? Can I give you our FedEx number . Thanks, Ulrich xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Ulrich L. Rohde, Ph.D. Chairman Synergy Microwave Corporation 201 McLean Boulevard Paterson, NJ 07504 Phone: _973-881-8800_ (tel:973-881-8800) Fax: _973-881-1924_ (tel:973-881-1924) In a message dated 12/5/2014 1:00:56 P.M. Eastern Standard Time, _skip.withrow@gmail.com_ (mailto:skip.with...@gmail.com) writes: Hello time-nuts, Please excuse the blatantly commercial announcement, I generally keep business matters off the list, but I have some Wenzel oscillators that may be of interest to time-nuts and wanted to give you first crack at them. These are Wenzel 500-06769 units, custom number for Harris used in microwave radios. Output is 100MHz at +20dBm. Supply input is +12 volts DC (about 500mA at start). EFC runs between 0.5V and 4.5V with positive coefficient and is about 335Hz/V. Unit is in standard 2" x 2" x .75" package. Output connector is female SMA. These would make great units for synthesizer and DDS projects. I don't have the ability to measure the phase noise, but should be relatively good as they were used at microwave frequencies in their past life. I'm asking $50 each for them and $7 (any quantity) Priority Mail shipping to U.S. addresses only. If you would like one (or more) please PayPal to _paypal@rdrelectronics.com_ (mailto:pay...@rdrelectronics.com) . I have attached a picture of one unit with the pinout. Regards, Skip Withrow RDR Electronics, Inc. _303-790-1830_ (tel:303-790-1830) 8am-5pm M-F _______________________________________________ time-nuts mailing list -- _time-nuts@febo.com_ (mailto: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.
