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Tobias, The main coil is for pretune -- which brings the center frequency of the YTO to the YTO PLL's capturing range which is usually +/- 20~30mhz around the CF. The FM coil is used to perform the

Thank a lot for all your inputs guys! My instruments work very well for their age. I just wanted to make them great again:) After reading your posts, I figured I will stay away from using any

The 3596 was used to measure carrier levels in a multiplexed system at 75 ohms. The 75 ohm input would be used to terminate a 75 ohm output directly. The 10k input would have been used to bridge a

One of the inputs on the 3596B is a 75ohm, another is a 10k ohm//50pf. I can understand with a Voltage across a 75 ohm resistor how to get a power reading. What happens when you switch the unit to

Hi George, I don't know. I'll receive the unit this week, I'll see if I bought trouble or if I got a deal. Qmavam

I keep hearing folks here mentioning water penetration of circuit board substrates, I think I can help you lay that myth firmly to rest. The process of making pcb's has always involved many long

Hello, sorry for being a bit slow to respond here. The Fluke313 Sounds interesting - would you be willing to ship it inside the USA to a freight forwarder? --- With best regards Tam HANNA (emailing on

I had to remove BI/Beckman trimpots from our products at somewhere around 2000 because they would fail after the boards were cleaned. We switched to Bourns, and the problem went away. BI denied that

I agree with this. I have been involved in many product developments over 40 years ( not for HP) and would not use anything but >99% IPA or DI water, and only if the parts are rated to be cleaned with

I understand the desire to try and get the insides to look like new! Like Paul, I guess I have 50+ bits of oldish HP and Tek equipment, but I'm not sure I would do what you intend, especially with

Looking for a HP 5343A Service Manual for S/N 2440A prefix. All kinds a manuals for the 2014A prefix. I am working on issues with the 10Hz to 500Hz section of my counter and the A3 Direct Counter PCBA

Hi, Ansgar Kueckes have gotten hold of a prototype HP1347A used to produce the "NORAD" graphics for the Wargames movie, and it does not match the 1346/1347 OPM manual on Keysights homepage. For

Hi all, one of my other projects I'm working on is a 5342A which does not count on the high frequency input. I checked the sampler according to the service manual. I used a 34401A for the resistance

Hi Calvin My recommendation is you just dust equipment out clean edge connectors and service fan assemblies / motors / bearings In short if it is not broken do not fix it I only use soap and water

Just be careful about possible water ingress at the edges of the fiber glass boards. It can actually cause some problems with high impedance circuits (Been there...) I would use an ordinary oven and

I regularly check eBay for spare parts list as “working”. Just keep looking. You would get what you want one day. Calvin

As a fan of cleaning old electronics I would make a few comments: Look at a number of past threads on cleaning, Not everything really needs total cleaning, some things should not be "cleaned" and some

Hi I would not soak the PCBs. Just blow away dirt using air. Somewhere I once read that the laminate of the PCBs can sponge up the water and I don't know whether this is nice. Better not to try it,

Jeff, re-fitting a different YIG was an option which I was thinking about when I repaired my 8341A sweeper. The YIG is a 5086-7323 which operates from 2.3 to 7GHz and tuning coil sensitivity is

Hi, I am thinking of deep cleaning of my gear. 8566 SA, 8510 VNA, 8515A S-parameter test set, 8350/83592 sweeper. I think I am going to remove all PCBs, soak them into clean water, brush them and