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Please repost the video link again ... Please Thank you

Guys! This old video is EXACTLY what I wanted. Thanks *lobos305* for that link. I am now familiar enough with the interface that the blur is inconsequential. I can see now how to move the marker in

My 8395 works fine with the internal reference and I did ti alignment with an external source. However it does not lock with a 10 MHz external signal - shows "unlock" but once in a while it will Lock.

Thanks Robert.? This is a clickable link. ? ? ? ? ?/g/HP8924-Family-Spectrum-Analyzers/files/RF%20Tools%20&%20NA%20FM

Using the HP RF Tools software greatly simplifies this proceedure. And as the 8924C uses PCMCIA cards it's easy to do. The progams are here

There is a video on the HP8920 which is very similar. https://www.fathermulcahy.net/HP8924C/ Pat

Mark, How close do you think you are?? Try to include numbers (even approximate ones) when posting about these HP instruments. Maybe you could post a picture of the cavities, too.? Brand?

Yeah, that is a good explanation of the generic process. I also found : (304) DUPLEXER Tune up on HP8560E & HP8920, Marconi 6200, 2968 + noise source for those without track Gen. - YouTube (

Found right here: HP 8920A Application Handbook? ?

The HP 8920A Application Handbook has a section on passive cavity and return loss measurement, the 8924 should be similar in setup.

Here is another excellent video from Brian Swann on duplexer tuning using a very similar test set made by HP. Best of luck. https://www.youtube.com/watch?v=P1wsG3FIU8w Pete

Here is a good youtube video describing the process. If you do a youtube search you will find many more examples. https://www.youtube.com/watch?v=tf5h_wz9G2o

I have one of those small UHF duplexers, and I think I need to tune it up. I took the ARES group's portable UHF repeater out yesterday and most of the time the repeater would receive my signal and

It sold for a fair price $461. I wish it had been closer for pick up. Not that I need one.

Even with shipping that was cheap. It had the aftermarket 100 watt RF input option.

Caution:? I just found this listing by accident.? I know nothing about the seller or their reputation.? Just passing on the info because right now the price is good if all functions are working and

opened the I/O module on the underside next to the I/O panel. What are the silk screen number (s) for the detection? diodes? I see some of tht SOT23 packages labeled CR1 to 4 and cr200 and cr201. I

Unit is in working condition. I opened it up to see if there were any power supply (swollen caps) issues and everything looks good to go. The screen does appear to have a slight "burn in (see photo)

Thanks Robert, Rab at Amtronix did offer me a lifeline so I'll check in with him tomorrow. Still, making the disk drive work and learning about how the Cal program is written has been fun and

From direct personal experience with these things. 1/ As others have said the 8924C (and 8920B) use PCMCIA cards, NOT the Epson cards. 2/ The cards are accessed in "linear" mode ie addressed like RAM