Burt I believe the voltmeter is calibrated for 75 ohms, not 50, otherwise they are very similar. You can apply a dB offset to correct for the measurement error, run the input at 10Kohms, and use a 50ohm feedthrough termination.
I own both (the B is has problems now), but I use the voltage measurement capability extensively. The B is much cheaper on Ebay. Bob ----- Original Message ----- From: Burt I. Weiner To: [email protected] Sent: Saturday, July 24, 2010 4:05 PM Subject: [time-nuts] HP-3586B receiver... I prefer the 3586-B version. I think it's more user friendly - once you get the hang of it, it does more. You can get off-the -shelf adaptors for the weird telco connectors to BNC for about $20, but it's simpler to just change out the connectors to BNC. The input module is a plug-in box. Remove six front panel screws, swing front panel out of the way, unplug the input module, replace connector, plug in the input module, look for screws you just had, replace just-lost screws, try again, and Voilla, normal connectors. The detection is only upper or lower sideband. Mine is GPS referenced and I use it for AM, PSK-31, RTTY, as well for FMT's. I live within 4 miles to two 50 KW AM stations and Have never had a problem when using my 210' Inverted-V. The selectable bandwidths with common options are: 3.1 kHz, 400 Hz, and 20 Hz. Marv Collins, W6OQI came over to our home about 3 years ago to look at the one I had at the time (I now have two of the B's). He said he doesn't know how he'd ever use one. Marv now has two of the B's. Burt, K6OQK At 12:32 PM 7/24/2010, [email protected] wrote >Subject: Re: [time-nuts] A Highly-Accurate and Stable SDR-IQ Using > GPS-DO and DFS >To: "paul swed" <[email protected]> >Cc: Discussion of precise time and frequency measurement > <[email protected]> >Message-ID: <[email protected]> >Content-Type: text/plain;charset=iso-8859-1 > >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 measuring carrier frequency. > >Best, > >-John Burt I. Weiner Associates Broadcast Technical Services Glendale, California U.S.A. [email protected] www.biwa.cc K6OQK _______________________________________________ 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.
