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EDIT: The latest manual I've found is 00427-90005. ?I saw?00427-90008 referenced in a comment on a web page but haven't found it anywhere. Leon...

Hello, I recently acquired a Govt. Surplus (Air Force) HP 427A, SN/ 947-A19375. ?I was going to adjust the DC offset according to section 5-30 of the manual but the A2 board doesn't have the A2R7 pot

Have a new box unopened, 50 sheets 81/2 x 11 plotter film. Contact me via PM if interested.

Michael, You need the personality module reader that attaches to the rear of the 95A. The card is read by the reader and uses the noise marker mode and the noise measurement method is the GAIN method

I have the option hardware in my HP8595A for noise figure measurements but not the HP 85719A Noise Figure Measurements Personality card. Presumably this is just software. Does anyone have this

I've just dragged out my 8160A pulse generator to finally get it working, and I am in need of a few ECL logic chips and a custom HP chip too. The troubleshooting I've done so far has me down to 3

After reassembling the [now clean] time-base, DS101 is still not illuminated. I've checked the +100V rail and that checks at 99.x volts (don't remember the exact fractional part). I had not previously

Just checked a couple of my changes and they are still there. They are verymuch corrections of factual errors where I had first hand knowlege. I find Wikipedia most useful as a source of references.

Great work. You made a difference in our insatiable thirst for more technical information. Ross Sent: Tuesday, March 26, 2024 3:22 PM To: [email protected] Subject: Re:

Thanks Friends, Happy to see that I am not alone on the 8165A. So I will have at least one reader! Now I am fighting against an 8160A which I purchased for few euros as not working. Channel A is now

Hi GH, *IF* I find the problem you mean! ;-) But if I can't you will hear about it, no doubt... But I will GH. It would be a shame not to add my little bit of knowledge here. Not much time to dig in

I got around to testing that lamp. With R135 and R136 still in place, I connected to the end marked +100V and the other side of the lamp to ground. The lamp fires very close to 90V so it's still good.

Refreshing: still looking for a medium size knob for my 83592A rf plugin rpg :) anyone who wants sell it, please PM Thanks!

I've found Weak-ipedia to be a politicized cesspool of ignorance, like much of Reddit. People just delete things they don't like regardless of accuracy.

I had a similar experience with Wikipedia about 10 years ago.? I wrote some stuff on the phase lock loop page about how one can think of the inputs to the phase detector as 2 cars going around a

Another one of your superb books, and especially as I just purchased a 8165A last week. So much to read and enjoy Philip

Thanks very much.? Like John, I was astounded with all the things that were totally new to me. Regards, Bruce, KG6OJI

I made a few small additions to two or three pages there, and they got immediately removed. So I went badk in there and un-did that, and suggested that if somebody had a problem with what I'd done

You would need to modify the circuit to use an LED, as it would be lit all the time with the resistors used, if you break the series resistor chain, the transistor might need changing too if it's not

It's a typical leaded bulb characteristic of many neons of the era. If it's bad and I can't find a suitable neon, I might go with an LED. It would be easy enough to install. The existing bulb is held