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Hello Rob, thanks for the quick answer! I want to use the 8601 for alignment of broadcast type radios. However, I must admit that I, in theory, know how to to just that but am still not relly clear

Hi there, I've had an HP8601A for about 5 years. It worked perfectly when I got it, and it still does. It's a very nice instrument, and very useful for all manner of things, particularly filter

Hi Group, I'm about to get a HP8601A RF Generator / Sweeper which I _think_ is basically working. However, I would like to know if anyone has good or bad experience with this device. (Is it prone to

Hi group: I have an HP 8559A spectrum analyzer (in the 853A display frame). It appears to work well, however, any signal appears at the same relative display location in every range (and I can't

Hi Jorgen, Many thanks for the reply. Fortunately it turned out to be the input capacitor and not the diodes. It took several days to find an allen key small enough to get the probe apart. It

<davhop@b...> wrote: Hi David, mostly the Sampling Gate Diodes fail, and in very seldom cases the following Fet, but normally the diodes protects the Fet due to "fuse acting" before the Fet blows

John - Thanks for the solid info. This does indeed give me motivation to find out what is going on. I have not tried a different cable (I used the same cable for all measurements), so, I will try

Just as a data point, I checked my 436A with 8482A sensor (http://www.tucker.com/images/images_spec/00000289.pdf) and found that it tracked my 8640B accurately between -30 and +20 dBm (to within a

Hi There, I have a spare HP cro bezel, the older aluminium round type with 4 screw holes. Good condition, a bit dusty, minor tarnish, inside paint good. I'm looking for a plastic square type, as

Dan – Thanks again. Before I say anything else I will try the alignment. It just seems odd that all three of my 436As behave the same way, with all 7 of my sensors, regardless if they are in the

Mike, I think that your dynamic range is dependent upon the sensor used. So, if your sensor a 8481A it goes from +20 to -30 then there you go. Most sensors have the 50db range(8482H 45db range).

Dan - Thanks for the suggestion. Do you remember if you did indeed get a full 50 dB dynamic range on your 436As? - Regards - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ,

Mike, Before you go and try and repair the power meter try and do a full re-alignment on it. I have found that if you are not getting good readings at the low end that re-aligning the 436A will

Brooke - Thanks for the info. The only problem is all three of my 436s behave the same way. What are the chances of all 3 having the same problem? Is there any one on here who does get a full 50 dB

Hi Mike: I asked a friend who's probably one of the world's experts on power measurements and he thinks you 436 is defective. His reply is: "Probably the A2 card (AC gain board, contains true range

Brooke - For example, I can take any of my sensors, which are marked to have a 50 dB range and connect them to a signal generator. I start out with the maximum level indicated on the sensor and all

Hi Mike: How are you making the measurement? 73, Brooke Clarke, N6GCE -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com

I have a question regarding the subject power meter. According to all of the information I have, including catalogs and the manual, the instrument is supposed to be able to have a 50 dB dynamic range.

It Is A Flood Gun (On Mine Anyhow), Perhaps A Missing Voltage Or A Socket Jarred Loose. A Manual May Still Be Available For Free Download At The Teknet Equipment Site. Also There Is A Lithium Cell At

Bought a 1980B scope on E-bay. Everything works except for the graticule illumination. Is this integral to the CRT like the flood gun approach used on some of HP's earlier scopes? Or is there a