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Does anybody have the glass filter that goes in front of the CRT on an 8921 they would like to sell? Mine was cracked when i got it. I am going to do the LCD display mod and i thought this would be a

Chris, Because you get the summary of messages and?because this Bessel thread?has consisted of several aspects,?it's not obvious what is new for you.? Is there something in particular you learned

Awesome! Learnt something today..

Correction:? that should be 2.0793 kHz (2079.3 Hz), not .20793 kHz.? Sorry about that. Burt, K6OQK

Hank, If you could give a step by step on how you accomplished this, it would be really appreciated, particularly how you were able to get the generator function to directly feed the receiver side

Hank, I got the attachment. That looks great.? I printed out the appropriate page and will give it a try as soon as I have some time in my shop.? Try it using a tone frequency of 2.0793 kHz.? The

Keith, The User Keys have to be programmed by you. You only need one such key for this setup (Global K1, K2, or K3).? Knob spinning or direct numerical entry comprise the other button pushes you'll

So what were the keys used. Keith

Forgot the attachment.

After several hours of fumbling around with the HP's menus, I got a SA display of the built in SG output at 146.00 MHz. At first I used a BNC jumper to get the SG into the SA, but then with more

Thanks Robert, Just let me know when if you find them. Bill M.

Sorry for the slow progress on looking for the boards. Not been to the storage unit yet. I did find a box of boards from a 8923 but none of the ones you need in that collection. Robert.

Hi Rab, I have recovered the 9821 to its former faults before the A10 PSU smoked, I have discovered that my eprom blower has lots of bells and whistles, including the "Burn and leave unlocked". I will

you may have to have an external SA to do what you are asking on the 8920 Some service monitors ( like the IFR 1600 and COM-120 ) have a split screen where you can adjust the generator and view the

I cant think of a way to do it via front panel. I'm pretty sure you'd have to flick between screens. Should be able to do it via HPIB/SCPI on the IEEE 488.2 port..

Gang, I want to do a Bessel Function confirmation of deviation calibration on my HP8920A using the internal RF generator and internal tone. Is there a way to adjust the deviation of the internal tone

Hi William, ?? Sorry to hear that. I wonder if one of the plug in boards bent a connector on the motherboard and shorted it? Rick

Thanks Rab, We are colleagues, not competitors. I am still interested in your offer for boards, Robert has not got to rummage through his Stash, so the pace has slowed. I am going a bit backwards with

Hi All, Feel free to help each other out with HP8920 boards. I have no resentment with helping out then people finding parts for less....Rick

Hi George, I believe I have noted that information in the past but haven't thought about it in a long while. So far, I haven't seen "wide spread" cases of failed eeproms in 8920 units due to excessive