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Re: RF Voltmeter?
And there the Millivac MV828-A which goes to just over 1GHz with 1mV FSD (-50dBm with the 50 Ohm head) Chopper amp and very stable...if you see one for sale make sure it comes with the cable (Mil
By hpxref · #86195 ·
Re: Just purchased HP 3586B--EBAY
I suspect that the WECO 372A is made up of two WECO 358A plugs along-side each other ‘cos we always used a pair of WECO 477B sockets for 124 Ohm on the front panel. In fact the ones we used were
By bill.lauchlan171@... · #86193 ·
Re: Just purchased HP 3586B--EBAY
I saw that 3586 on ebay. the connectors on the back labeled Oven output and external reference need to be connected to each other. There are articles on the internet on how to convert the inputs from
By PAUL KOBY · #86192 ·
Re: Just purchased HP 3586B--EBAY
The RCA 50 ohm WECO type connector for broadcast patch panels has a .050" pin diameter. The standard WECO 358A 75 ohm connector has a .090" diameter pin. Both possess a .375" diameter barrel. The
By Greg Muir · #86191 ·
Re: Just purchased HP 3586B--EBAY
The correct matching parts are a WECO 358A Plug to a WECO 477B Socket. The comment(s) about Trompeter Plugs is absolutely correct. I’m not sure if there is different part which is a direct
By bill.lauchlan171@... · #86194 ·
Re: Just purchased HP 3586B--EBAY
HP specifically states on their spec sheet for the 3586 that the 75 ohm port mates with the WECO 358A plug. Greg
By Greg Muir · #86190 ·
Re: Some HP 8341A questions
In a typical HP YTO loop config, one end of the main coil is connected to -40V, the other is connected to the emitter of the main coil driver. The current through the main coil is controlled by the
By Calvin Guan · #86189 ·
Re: Just purchased HP 3586B--EBAY
Almost all of the connectors that you will find that are made by Trompeter are not compatible with the WECO 358. Be careful, the shield fits, but the center pin won't engage. They were made for 75
By Chuck Harris · #86188 ·
Re: Just purchased HP 3586B--EBAY
You might also consider picking up one or two WECO to BNC adapters for the unit. It would save the effort of having to disassemble it and change over to BNC connectors. If you use the search terms
By Greg Muir · #86187 ·
Re: RF Voltmeter?
I have a Ballantine 323 AC voltmeter and a Boonton 91H RF "millivoltmeter". The Ballantine is solid-state and has a usable range to 20 MHz, the Boonton is vacuum-tube and has a usable range to 1200
By mharmon@... · #86185 ·
436A power meter front panel inquiry
Before I resort to that famous auction site I wanted to inquire on this list to see if anyone might have parted out a 436A power meter and have a spare front panel in good condition available. I
By Greg Muir · #86186 ·
Re: Just purchased HP 3586B--EBAY
Hi Lamont According to the HP 3586 user manual the B variant already has a BNC input that is switchable between 50 and 75 Ohms. The A and B variants were teleco "specials" the C variant was the
By george edmonds · #86184 ·
Re: Just purchased HP 3586B--EBAY
Lamont, Download the manual, look at the matching network. You will see how easily you can make it selectable for 50 or 75 or whatever tweaks your tuner. There may be several illustrations for
By czelusniakd · #86183 ·
Re: RF Voltmeter?
The big limitation in using probe type RF voltmeters, is the probe. It becomes very difficult to establish a good low impedance ground above perhaps 700 MHz, making measurements questionable. This
By Stuart Landau · #86182 ·
Re: Why Under FILa file for the 3586 with 419MB, but nothing there?
I don't see any other fole for the 3586! Lamont
By lamontcranston17 · #86181 ·
Re: Why Under FILa file for the 3586 with 419MB, but nothing there?
The folder is empty so the upload failed or something. Maybe they were deleted. The 419MB is the total space used of the 2GB allocation. Try another file. Alan G3NYK
By Alan Melia · #86180 ·
Why Under FILa file for the 3586 with 419MB, but nothing there?
Under FILES> 3586> 419MB---- file empty. Anyone known why I can't see the files? Thank, Lamont.
By lamontcranston17 · #86179 ·
Just purchased HP 3586B--EBAY
I waiting to get it, I 'm pretty excited, but also concerned it will need repair. In the listing I note is the display has error code of CE-1. The manual says, "Operator error, Attempt made to
By lamontcranston17 · #86178 ·
Re: Frequency calibration?
You need to investigate, and measure Allen Variance, a better indication of the quality of an oscillator. What you will most likely find is the GPS disciplined oscillator, though very good in terms
By Chuck Harris · #86177 ·
Re: Frequency calibration?
I liked the story about the man with 3 watches. This is what measurement is all about, making a conclusion of the data that you have. The measurements give you an indication of the precision you have
By G?ran Krusell · #86176 ·