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Re: Weather resistant, covered Litz wire wanted.
Am 06.12.2020 um 02:43 schrieb Kuba Ober: Polyvinylchlorid (PVC-U) Allgemeine Eigenschaften Werkstoffnummer 2690 Dielektrischer *Verlustfaktor* 1 MHz IEC 60250 300 Durchschlagfestigkeit IEC 60243-1 40
By DF6NA Rainer · #112028 ·
Re: 8590B power supply repair
Hi Mark, Ok, noted.? Thanks. Tom
By Tom B · #112027 ·
Re: Weather resistant, covered Litz wire wanted.
A bit like Mary Poppins: Practically perfect in every way. -Chuck Harris donald collie wrote: Can anybody comment on how well Teflon weathers?
By Chuck Harris · #112026 ·
Re: Weather resistant, covered Litz wire wanted.
Bruce : I`m trying to resonate this loop over the HF band, but it may be necessary to switch out turns with a relay etc. I plan to use the loop in its non-resonant mode, then resonate it to produce
By donald collie · #112025 ·
Re: 8590B power supply repair
Tom, Send me a PM and I'll send info that I have. W3OHM
By Sam Reaves · #112024 ·
Re: Weather resistant, covered Litz wire wanted.
Could you just put regular Litz wire in teflon tubing?
By Sam Reaves · #112023 ·
Re: Weather resistant, covered Litz wire wanted.
There¡¯s probably some lore that perpetuates the ¡°RF is black magic¡± thing, and all sorts of myths get accepted into such lore. That¡¯s the thing about disjoint knowledge: people may say ¡°PVC
By Kuba Sunderland-Ober · #112022 ·
Re: WTB HP 8660C Module Extension Cables 11672
Hello do you still have the extention cables . 11672-60001. Please let me know Thanks Bob Levy
By ROBERT LEVY · #112021 ·
Re: 8590B low sensitivity problem
Martin, Two things: Check your email for an email from me. Be very careful when checking anything in the input circuit with an ohmmeter. Don't make any measurements where the input mixer could be
By Sam Reaves · #112020 ·
Re: Can capacitors
Go to https://www.tubesandmore.com/products/capacitors?filters=Brand%3DCE%20Manufacturing They sell the CE Mfg can caps. Dave
By David Schneider · #112019 ·
Re: Agilent 54831M
I have quite a few updates. The external monitor I had was working. Yesterday I tried my (very) old PC to boot the original hard drive that was in the scope and noticed weird things with the monitor.
By Bostonman <bostonman73@...> · #112018 ·
Re: Weather resistant, covered Litz wire wanted.
This is why I love this site!!
By Mike Vande Voort · #112017 ·
Re: Weather resistant, covered Litz wire wanted.
Hi John, I guess the definition of bad varies depending on the task. I had always heard that PVC wasn't great, but for most ordinary tasks HF -> VHF, it would suffice. The hams have been touting the
By Chuck Harris · #112016 ·
Re: Repairing flat high voltage ribbon used in HP displays
That's a good tip, I will need to check. The PDA
By Toby · #112015 ·
Re: hp 8340B YIG UNLOCK error
I didn't *see* any traces. In a chat with a friend of mine earlier tonight, the thought came up that the problem may have been caused by *silver migration*. Since the bolt/nut and possibly the center
By Raymond Domp Frank · #112014 ·
Re: Weather resistant, covered Litz wire wanted.
This is a copy of a old post (I think mine) from a loop antenna group... #### For plastics used in RF, you're looking for the compounds with the lowest "loss tangent"/"dissipation factor" (which
By Andy ZL3AG · #112013 ·
Re: 8590B power supply repair
That is the classic symptom of a shorted bridge rectifier on the power line input of the supply. Replace the bridge, and the 470uf cap, and you will be on the road to recovery. RIFA caps rarely do any
By Chuck Harris · #112012 ·
Re: Can capacitors
Hi Folks. CE Dist is in the same building as Antique Electronic Supply in Tempe, AZ. They are just a wholesale arm of the same company. You can find CE caps at TubesAndMore.com Dan in Chandler, AZ
By Daniel Nelson · #112011 ·
Re: 8590B power supply repair
Hi Tom, I am not familiar w/this supply (assume it's NOT from HP) but I would have input diode rectifiers handy (single or bridge) as well as MOSFET's that drive the transformer. Hope you have a
By Mark Bielman · #112010 ·
Re: Weather resistant, covered Litz wire wanted.
For a comparison of PVC versus PE (HDPE is just as good), the best source of dielectric loss mesurements is Von Hipples work from MIT, around WWII. Since you may not have his text book, can download
By John Lyles · #112009 ·