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Date
Re: 8665B noisy signal & Cal Errors
Special Function 320, instrument self test.
By W4PJB · #147459 ·
Re: Efratom MBF distrib amps
Ahh, this is very handy, thanks Wilko. Please extend my thanks to Robert as well. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
By Dave McGuire · #147458 ·
Re: HP 141T Power Supply Help Needed
Already done, see ¡°141T reference replacement" topic and photo album. Dave Wise ________________________________ Sent: Monday, September 23, 2024 9:04 AM To: [email protected]
By Dave Wise · #147457 ·
Re: HP 141T Power Supply Help Needed
i either get no trace at low intensity or blooming just after a background green fill. I've been going through the 8552/8554 so I haven't paid it much mind but I do need to come back to it. Will look
By Bill Berzinskas · #147456 ·
Re: 8665B noisy signal & Cal Errors
What is "special 320" ? [email protected]> wrote:
By Tom Phillips · #147455 ·
Re: HP 141T Power Supply Help Needed
Bill, The 141T that I purchased from Valuetronics now has a new fan and the power transistor sockets have been replaced. Now the 1A fuses on the 8552 IF module are popping. I built a fixture that I
By Michael Bafaro · #147454 ·
Re: 8665B noisy signal & Cal Errors
Quick update: I put the unit in self test (Special 320) and got code +2,433,311. From the code list, this appears to need MW Loop Adjustment. I will do this cal and report back!
By W4PJB · #147453 ·
Re: Ff proposals
Now I'm looking for papers/manuals of the HP8568B and the 8565OA quasi peak adapter and the 8444A opt 059 tracking generator. Because the best person doesn't have that. Where can I find it or who has
By Johan · #147452 ·
Re: HP 8568A Spectrum Analyser not booting up. Both INSTR CHECK Leds on
Thanks for your answer, If i unplug the bus cable i still get both LEDs. The processor clock is also running, i've checked it yesterday. 10MHz signal is present, it gets divided into two 5MHz out of
By azpo1928r@... · #147451 ·
8665B noisy signal & Cal Errors
I have an 8665B with what I can best describe as a noisy signal; three side lobes to each side of the carrier, before disappearing into the noise floor. They are visible on <3GHz, but really shows as
By W4PJB · #147450 ·
Re: Help request - how to test an HP8350B RF plugin YIG
Thank you, Paul. I have checked and calibrate the power supplies in 8350B, I also changed the 3 battery cells with new ones in the same case. The bad joints maybe is a case, but with the A8 from the
By John Brokos · #147449 ·
Ff proposals
Hello members, I introduce myself, I'm a new member and my name is Harry. I was able to buy a HP8568B with peripherals for my biggest hobby, and that is receiving TV signals and I want to be able to
By Johan · #147448 ·
Re: Help request - how to test an HP8350B RF plugin YIG
OK going from memory the 83592A RF plug-in is actually a very compact unit with a lot to it The yig signal should be available on the rear of the plug in so I would start there next try the output on
By Paul Bicknell · #147447 ·
Re: HP 8566B Not Showing Any Signal
I'm picking up a new attenuator tomorrow, and until then, I have nothing I can do to help, so I thought I'd do one of the common mods that have been recommended for the A20, and that is to replace C7,
By Brad Jackson · #147446 ·
Re: Operating Manual 8901A wanted
Hello George, thats really great. Thanks a lot. Kind regards from Germany Ernst
By dk1vi · #147445 ·
Re: HP 8566B Not Showing Any Signal
Thanks again for the information! Here is a video showing the SA with the attenuator and the coaxial switch bypassed. https://youtu.be/NJea6aNg-BA
By Brad Jackson · #147444 ·
Efratom MBF distrib amps
My pal Robert PE1MJA took the time to reverse engineer the MBF so all credits to him! And no guarantees there are no mistakes, goes without saying I suppose.. The trick is playing with the caps to
By Wilko Bulte · #147442 ·
Re: Help request - how to test an HP8350B RF plugin YIG
Hello, I'm trying to repair a 83592A RF plug-in I have bought it from eBay with many components missing, and I have completed it. Furthermore, I have changed the 300uF cap on A8 board, it was in it. I
By John Brokos · #147441 ·
Re: HP 8568A Spectrum Analyser not booting up. Both INSTR CHECK Leds on
What happens if you disconnect the bus cable and then turn on the analyzer? LED 1 should stay on, while LED 2 should extinguish. I suspect both will stay on as they have so far, but if things change
By pianovt · #147440 ·
Re: HP 8566B Not Showing Any Signal
That's great info Ed! Thank you so much! I wonder if that is my exact problem, because earlier today when I first got to the SA, nothing that was working last night worked today! I turned it off and
By Brad Jackson · #147439 ·