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Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
If you do edge coupled microstrip filters or directional couplers than the accuracy of the gaps is very important but another aspect that has to be considered is the roughness of the edges
By Lothar baier <Lothar@...> · #123930 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Would be interesting to look at the edges of the traces under a Microscope or SEM and compare against etched boards
By Lothar baier <Lothar@...> · #123929 ·
Re: HP83595A/B (HP 8350) ROM firmware required
If you don't need version 7 specifically, version 9 for 83595 is available from the KO4BB archive:
By Dave McGuire · #123928 ·
Re: HP83595A/B (HP 8350) ROM firmware required
Just out of curiosity why dont you upgrade your 8510B to a C ?
By Lothar baier <Lothar@...> · #123927 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Actually, I don¡¯t use photo resist. I am using the laser toner method of making PCB's still need an etchant but all you need is bare copper, a laser printer (NOT A BROTHER) and a laminator. When I
By Zentronics42@... · #123926 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Nice! I'll look forward to your tutorial.
By Dave McGuire · #123925 ·
Re: HP83595A/B (HP 8350) ROM firmware required
Hi, I have 8350B ver7 with 83595A with version 3, have you found firmware V7 for plugin 83595A ? Is there a version 7 for this plugin? De : [email protected]
By Yves Tardif · #123924 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
There are different reasons for this , first of I use AWR MWO to design and simulate circuits so in order for the simulations to match or come close to the actual build you need to have defined
By Lothar baier <Lothar@...> · #123923 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Yes, it can hold 50 micron / 2 thou trace separation. I am in the (slow) process of preparing a complete tutorial and open-source tool chain. (It works, but actually using it at this point is quite an
By Bryce Schroeder · #123922 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Just yankin' your chain.. ;) I've done ferric chloride etching too, way back when, and got yelled at by my grandmother about holes in my jeans. Now I send my Gerbers off to OshPark for prototypes, and
By Dave McGuire · #123921 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
I still design circuits , I build them and I test them so I am still doing about 80% of the work
By Lothar baier <Lothar@...> · #123920 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
This list has many purposes, but one of them is to serve as a forum through which people can learn from each other. I submit that anyone who finds newbies asking questions about HP test equipment on
By Dave McGuire · #123919 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Sounds interesting for prototyping. Most of my designs make use of TQFP and LQFP packages with 0.5mm pin pitch; can the process and equipment you're using handle those? Which engraver are you using?
By Dave McGuire · #123918 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Hey wait, weren't you the guy who was just complaining that nobody does anything anymore? ;) -Dave -- Dave McGuire, AK4HZ New Kensington, PA
By Dave McGuire · #123917 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
I stopped doing it years ago mainly because the materials I mostly use ( Rogers 4350,6010) are not available with photo resist coating and if you send them out for coating than the lot charge is quite
By Lothar baier <Lothar@...> · #123916 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
I've started "etching" PCBs with a fiber laser engraver. The bog standard 1064 nm ones can do it, which somewhat surprised me. Glad to not have to coat PCBs in photosensitive goo anymore since the
By Bryce Schroeder · #123915 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Eventually dad bought a etch tank from isel , it used a different cchemical (ammonia persulphate ) and the agitation was done by the means of air bubbles generated by a airpump ! The problem with
By Lothar baier <Lothar@...> · #123914 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
I grew up just fine ? Sent: Friday, March 18, 2022 7:00 PM To: [email protected] Subject: Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
By Lothar baier <Lothar@...> · #123913 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
Actually eventually I switched to ammonia persulphate , cheaper no smell and less stress with mom over holes in shirts ?
By Lothar baier <Lothar@...> · #123912 ·
Re: BS, was Re: [HP-Agilent-Keysight-equipment] Spread the word -- Swap Meet Returns!
If you can get it, I'd suggest the CuCl method, about 4 parts Hydrogen peroxide (drugstore strength) and 1 part of Hydrochloric (muriatic) acid.? It'll need air bubbling through it as the hydrogen
By Harvey White · #123911 ·