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Re: Cleaning RF bits (attenuators, connectors, etc.)
Isopropyl alcohol is quite hygroscopic. If exposed to air for a time pure ispropyl will become 91%. That is usually the dryest one can buy in general trade. 99+% is available from stores who sell
By Richard Knoppow · #91744 ·
Re: Cleaning RF bits (attenuators, connectors, etc.)
IPA is reccommended by Keysight. I buy "eBay graded" IPA. Supposed to be 99.9%, but any more than 80% would be a bonus! I would not immerse anything, even in IPA. I had some 3.5 mm connectors with
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #91743 ·
Re: Hp 8648C with output level problems
Hi Peter First is the PSU OK for voltage and noise, well known problem with 8648X signal generators 73 George G6HIG
By george edmonds · #91742 ·
Hp 8648C with output level problems
Hello All I have a Well trusted HP 8648C signal generator I used for many years. It has the high output option (20dBm output). It has now low output around 2-3dBm output maximum and it is not stable
By Peter Hansen · #91741 ·
Re: Cleaning RF bits (attenuators, connectors, etc.)
Back in the day I must have cleaned many hundreds of N Type connectors, the biggest issue at the observatory was actually PP (Pigeon Poop - 60' dishes were ideal nesting sites!) However
By Adrian Nicol · #91740 ·
Re: Cleaning RF bits (attenuators, connectors, etc.)
I definitely would not immerse the attenuators in any kind of solvent, not even water. However, for a solvent, I would first try naphtha, and if that didn't seem to work, then try denatured alcohol,
By doug · #91739 ·
Re: Cleaning RF bits (attenuators, connectors, etc.)
I find that napthat (i.e. Ronson lighter fluid) does a good job. It is mild enough to not attack things, but aggressive enough to clean dirt and contaminates like adhesives. Daun Daun E. Yeagley II,
By Daun Yeagley · #91738 ·
Cleaning RF bits (attenuators, connectors, etc.)
I have a bunch of type N attenuators and connectors where the electrical surfaces are in good shape, but the outer body is cruddy with sticker goo, grime, and who knows what. Any suggestions on how to
By John Ackermann N8UR · #91737 ·
hp 83236-66501 board
I purchased a hp83236-66501 board from ebay some time ago, and was wondering if anyone has a schematic for the board? Would like to identify the components on it for possible use in future designs.
By john rader · #91736 ·
[OT] - Bird 4391M Data connector information
Hello, sorry for the OT. I have purchased a old rf watt meter (still sold by Bird AFAIK) but any pointer leads me to 4391A models, M is simply unknown. The M version has a connector on its back panel,
By Giuseppe Marullo[iw2jww] · #91735 ·
Re: SPACE, was Re: [HP-Agilent-Keysight-equipment] [test-equip-trader] Speaking of parts units.. Last price drop
Hello Folks, sorry for being so slow to reply re this. May I send, off list, a few pictures of the sump pump assembly to people in the know? This is my first property I ever owned, so I would be very
By Tam Hanna · #91734 ·
Re: H.P. 8656B
Especially if the ripple is 50/60 Hz and not 100/120 Hz. One other thing I have found is the grounds in the power supply might need the hardware tightened. This is in the rear area of the unit. Ground
By tmillermdems <tmiller11147@...> · #91733 ·
Re: Frequency reference adjustment on E5070B?
I think there's a piece of service software needed to adjust the E5070B. You may be able to find it on the 'net. ISTR that the high-stability option for the HP/Agilent 8648B/C/D series is also called
By Raymond Domp Frank · #91732 ·
Re: H.P. 8656B
Chuck, I believe the "U" indicates your unit was made in the UK...¡­ ron N4UE
By Ron Bussiere <n4ue@...> · #91731 ·
Re: H.P. 8656B
Could be a faulty diode in the 5v line regulation/rectifier circuit. 1v ac is a lot .. Sent from Samsung by banging a nail into a piece of wood.
By nigel adams · #91730 ·
Frequency reference adjustment on E5070B?
I just went through performance verification tests on an E5070B and the reference is off a bit. This unit has the high-stability (1E5) option. I've spent the last half hour Googling and looking
By Jeff DePolo · #91729 ·
Re: 16601
Thanks, appreciate the link and reminder. I have to read into the previous discussion threads still. Just walked back in from taking the Plextor SCSI CD drive from the mailbox I ordered since I don't
By jafinch78 . · #91728 ·
What 500mhz probes are compatible with HP 16534A?
Hi. I'm looking to pick up 2 500mhz probes that are compatible with the HP 16534A card (installed into a 16700B LA). The documentation lists 10441a, 1160A and 1161A as being compatible. I believe
By Tony Jones · #91727 ·
Re: 16601
Maybe you missed a previous reply. I uploaded a copy of the 16600A service manual to the files section of the group. That is the only 16600A manual I have. File: 16600-97010.PDF Description: Agilent
By Glen Slick · #91726 ·
Re: H.P. 8656B
Hi Chuck The U indicates that it was made in Scotland at North Queensferry. ? Look for leaking electrolytic capacitors and contamination on the PCB. Multiple designs of PSU were used from third party
By george edmonds · #91725 ·