Oh, boy, all kinds of questions to ask here. First off - how is he detecting these harmonics? It would be very easy to overload the detecting device and have the harmonic being produced inside the de
Thanks, Bill - actually you have explained what folks here mean when they talk about 'Tesla Effect' - now I have something to get my neuron's around. We are talking about the rf levels when we 'gross
I just put an vintage HP 851 Spectrum Analyzer on our local (i.e. Kansas City) Craigslist and thought I might just mention it here in case someone is interested. <http://kansascity.craigslist.org/ele
Auction sites other than EBAY? Not sure of any. I do use EBAY a fair amount but I hate having to ship BIG stuff so local Craigslist has been a good option. Not a very wide audience but reasonable to
I've been on a 'fix 'em up and get them out the door' frenzy lately and this HP 120B scope is one item that I am (reluctantly) going to sell (now that I have my Tek 465 working again). Although the l
I've been on a 'fix 'em up and get them out the door' frenzy lately and this HP 120B scope is one item that I am (reluctantly) going to sell (now that I have my Tek 465 working again). Although the l
A couple of days ago someone posted looking for a replacement meter for a (I assume) already built amplifier. At the time, I didn't have anything that was close but I was just cleaning out and organi
I have a variety of panel meters that are now subject to the 'if you don't use them, sell them!' rule (just made that up but it is appropriate). Condition is used and dusty unless otherwise noted. Al
Cleaning up some more of the ham shack and these were on the hit list. Both are 1,000 pF max (50 pF minimum or thereabouts) high voltage air variables. They were used as loading capacitors on the two
Still cleaning out the ham shack and I have listed on EBAY some more pieces from the 4-1000A amplifiers I had. If you are interested, I would be delighted if you would check them out. B&W plate choke
Keep on finding stuff downstairs - I added a high voltage power supply choke to my EBAY listings. Ebay item #160464655311 It measured out to 20 Henrys (or is that Henry's??). Can't measure the insula
Just cleaned up and combined a batch of 11 HV ceramic door knob capacitors (Centralab, HiQ, etc) and put it on Ebay. Item #160484505809 Capacity ranges from 62 pF up to 1,000 pF and voltage ratings f
If you are in the market for some 'smallish' air variable capacitors (i.e. 20 to 130 pF and 20 to 165 pF - both at 4,500 V), I just found two lurking in my ham shack and put them on EBAY. 20 to 130 p
I've been cleaning up the ham shack again in an perpetual struggle to clean up the clutter and simply my life and I found a Bird watt meter meter (just the meter) and a Bird RF sensing unit (that tak
Found two(2) Jennings RF5A-26S in my 'collection' of stuff - wonder if anyone out there might be interested in these. Condition is new - probably about 10 to 15 years old - they have not been voltage
Pictures at: https://picasaweb.google.com/bob.groh/Tubes?feat=directlink Cleaning up the shack (still and again!) and have some power tubes that need good homes: Two GL813 Two Amperex 6155 (i.e. 4-12
Good evening all. Yeah, I know a 4-125A is too small but I've got three of them and a hankering to see them glow. And to make things worse (?), I found a (NOS) socket for them. So what's a ham to do?
OK here I am really going to tempt the gods with a strange idea of a 'classic' medium power amplifier using one or two of my 4-125A tubes - HF, window in the front so I can watch the tube plate(s) gl
No real component is ever (well, almost never) 'pure' - there are always 'strays' creeping around - series inductance, shunt capacity, etc. For example, a 1 inch piece of 16 gauge copper wire has an
As other's have noted, you should NOT have a non-linear response (assuming the meter itself is linear). Couple of thoughts occur to me: 1. Note that resistors have a breakdown voltage themselves (dep