Re: [time-nuts] A Highly-Accurate and Stable SDR-IQ Using GPS-DO and DFS

2010-07-24 Thread J. Forster
Oops. Yes, typo. Sorry. I don't know about the A version but the and C are essentially identical except the B used wierd Telco connectors. An new adapter might cost as much as you'd pay for the receiver. Their shortfall is the demodulation options are limited, but they do a wonderful job of meas

Re: [time-nuts] A Highly-Accurate and Stable SDR-IQ Using GPS-DO and DFS

2010-07-24 Thread paul swed
Indeed the do. I believe its actually a HP3586b a selective level voltmeter. One heck of a reciever measures signals to 100th of a db. As a heads up they have a very good xtal oven in them. I have 5 of these units. Just can not resist them. Often you find these quite cheap. Last one was $20 because

Re: [time-nuts] A Highly-Accurate and Stable SDR-IQ Using GPS-DO and DFS

2010-07-23 Thread J. Forster
If you want an HF radio that reads to a Hz, ready made, get a used HP (Agilent) 3486 Selective Level Meter. It covers essentially DC to either 20 or 30 MHz. It has a good internal ovenized oscillator, and can be locked to an external standard. A virtually unique feature is that it will lock onto a

[time-nuts] A Highly-Accurate and Stable SDR-iq Using GPS-DO and DFS

2010-07-23 Thread Brad Dye
Sorry, I didn't mean to send this message again. Brad Dye, K9IQY ___ 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] A Highly-Accurate and Stable SDR-IQ Using GPS-DO and DFS

2010-07-23 Thread Brad Dye
I have been involved with many kinds of radio receivers for over fifty years -- amateur, military, and commercial. This modified SDR-IQ is a dream come true. When I was a young ham, I dreamed of the day when I might have a receiver that would read out to one kilocycle (before we used the term He