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Has anyone seen the test cards for a 5328A. I have searched different sites for years and never found a set. Is there any interest in a set? The original test cards had four tests per card. Due to the

Yes, you are right about OCXOs and airflow. G?ran

What brings up a question? no prior post included -- Dave Manuals@... www.ArtekManuals.com

Hi Tobias, thanks for your comments. Besides the processor board, A25A1 (2nd preamplifier) is also totally different. Just got the correct manual from Artekmanuals and will continue with fault finding

I see this diagram, which indicates a very low power output, starting at 21 V. What are the dimensions?? It seems to me not a difficult transformer to substitute, less than 5 Watts.? I probably

So this brings up the question as to the "Gozinta and Gozouta". I am assuming the inductor side is the output and the resistive side is the input. Correct? What then would be the recommended drive

SMA-F and SMA-M

If that's near the true Vf, then I'd say it's an SRD. Be careful in using VOMs to test RF components - it's easy to burn stuff out with excessive test current. SRDs are pretty tough, and Schottkys,

The plot thickens. I found a used 1854-0071 in the Q department, and verified it on the curve tracer. The beta is around 300-400 in the operating current range. I pulled the "bad" one, and it looks

Using my VOM in the X1 scale (1.5V OC) to forward bias, I see something like 968 mv.

Gentlemen, I have a HP5340A counter that has been in service for many years. Recently the power fuse blew and it turns out the power transformer T2 has an internal short. This is the transformer that

My notes suggest a 2N3904. "1854-1293 as per Keysight as replacement for 1854-0071 . Part Description: Mod and Ser Nbr Reqd Transistor NPN VCE-25V IC-0.1A PD-0.625W silicon TO-92, Protected Supply

That appears to be either a simple microwave mixer, or an SRD multiplier/comb generator, not a detector. A detector would not have both ends of the diode hooked to low impedance terminations. You may

Hi Ernst I also once repaired a 5342A. I am not sure whether the samplers are really different. To me, it appears that the 5342A and the 5343A are identical besides the front panel RF connector. IMHO

SMA in and out - no Video scrap - should be good for microwave Am 25.11.2018 um 22:00 schrieb RFI-EMI-GUY:

What type of connectors are on the ends? Looks like 'UHF' video connectors. My guess is NOT microwave, but more likely TV stuff. Pete

Somewhere in my scrounging I came across this RF detector. I thought it was bad, maybe was told this. Anyway under careful scrutiny with my VOM (diode action), DVM (resistance) and L/C meter I have

As I recall, 1854-0071 was a very widely used transistor in HP Instruments. I know we used lots of them in the Division where I worked in the early 70's. The JEDEC reference 2N3391 rings a Bell. I

Thank you, Dave! I had a 7L12 Tek spectrum analyzer module on the “to do” pile. I decided to check for the integrity of all of the trimmer caps, just to cross that newly-added item off the list,

On 11/25/2018 1:23 PM, Ed Breya via Groups.Io wrote: <snip> > Q21 and the surroundings look OK solder-wise, and are fairly clean - I was imagining a simple bad joint, but figured on replacing it