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The balance pots in my 334A have gotten pretty erratic. Am I correct to assume these are carbon-track types and not wire-wound? I presume that this application would demand carbon-track but in my

I have a few of these units all operational and yes they are seriously heavy. This unit is nice as it appears to have the interconnect cables. It is a really nice SA. There was a flood of units some 7

Wally Depends on largely on 1) The size of the castors ( wheels), bigger wheels are generally easier to deal with and actually less likely catch and tip 2) The floor surface they are rolling on

There are plenty of 34401A displays on ebay for under $30. I assume they're clones since there are so many but have no reason to think they're bad. I'm hoping the prices on 53131A displays will also

I have a bunch of old HP and other equipment and am using a Tek scope stand for some of it. I was wondering if anyone had any suggestions about rolling stands for TE, Do the rolling racks?that

Just recently, I was working on my Marconi 2380 Spectrum Analyzer and realized there was a need for a decent anti gravity device. However my inquiries to the government about their gravity wave

Hi Askild, thanks a lot for the clear and detailed pointer. With "nonvolatile trace memory" mentioned in the manual, I thought of something more durable (EEPROM, FlashROM) than a battery back-up SRAM

So I looked up this HexaWave HWF1681RA - definitely a MESFET. If it turns out they're shot, you may be able to find NEC brand equivalents. I vaguely recall that I have some amplifiers that have

Hi Jeff, Thanks for the info, very interesting. Both devices test good on the diode range of the 34401A, next test is to see what I can do with them I have a Tek ext mixer on its way to me and I

Sounds like you don't have a manual/schematic, but if you can look at the actual circuit and poke around for measurements, look for how the MESFETs are biased. If the sources are grounded, then there

On 3/30/20 12:56 AM, saipan59 (Pete) wrote: > Maybe the rack was originally for HP computer systems, they had > deeper SCSI storage cabinets. > > An anecdote: The last few years of my career with

OT:? ? question? ?Aeroflex 3416 6 GHz Signal Generator,? ?No RF output? ? ?& Service Man. for 3410 - 3416 series Apologies, I will post this on the Marconi group, but thought I might ask

I'd like to see $US150.00 for the 5363B Time Interval Probes and $US100.00 for the 8002A Pulse Gen. Manuals for both are available. I've had the probes for some time and they were fine the last time I

For precision nothing beats a 3458A, 8.5 digit, but it’s expensive. The 3456 is the better of the 3455/3456 pair. Our standard bench meter is a 3478A. Should be relatively cheap and they seem to be

I'd vote for the HP3455A and HP3456A. I have about three of each, and I did have to repair some of them initially (which is why they were quite cheap) - mostly the usual bad power supply cap

Oof! That's a heavy one, in case somebody's not aware; 112 lbs, IIRC. Lest you try to ship or lift one. The display portion and the synthesizer portion do come apart, in nearly equal volume and weight

But you can buy 34401A displays fairly readily and for not too much cost, whereas the Keithley ones are like hens teeth and very many show which segments have been lit longer than others. I have a

The HP34401A DVM is a very good choice, and I have see them go for very reasonable prices. I bought three of them locally a couple of years ago for a low price. They are very stable and small. The

Yes. Needs good front lighting though, as the display is an unilluminated LCD. But then, it doesn’t degrade like the VFDs on newer instruments. (This is all mostly moot if you collect the

I'm not a big fan of the LCD's HP used for a while. Hard to read at times. The vacuum florescent displays are nice until they die. I prefer LEDs. The 34401A looks nice. Beware of failing displays!