I have been de-constructing some old home brew equipment and have a variety of aluminum rack panels and chassis which need to go - any place except in my basement! I don't know if anyone has any inte
More shop cleaning. I found a rather surprising number of variable transformers (i.e. 'variac') around the shop and they should go off into the world and find a new home. I've put all my available va
The 3 small variacs and the biggest one (20A) are spoken for. That leaves the 15A and the 7.5A lab unit. 73 Bob, WA2CKY _______________________________________________ Amps mailing list Amps@contesti
There are a variety of non-contact infrared measuring instruments available in the industrial world for prices starting in the $80 range. Just for one set of examples take a look at the following web
Finally have a bit of extra time and I have decided on prices for some of the parts from the KW amplifiers I tore apart recently. Pictures and descriptions are on the web at: <http://picasaweb.google
All the multiturn counters/dials are sold. Thanks to everyone. 73 Bob, WA2CKY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman
More basement cleanup. I have the following items that I would like to see gone to a new home. Item #1 High Voltage choke Asking $25 with shipping included (USA only) No idea of the actual breakdown
Good evening to everyone - I just listed one of my B&W 850A pi-networks on Ebay (ID=160352924684) in the Radios->Ham Radio->Amplifiers group. Set the starting price way down and no reserve. 73 Bob Gr
I would strive to keep the total capacity as close to 0.1 uF as possible with, of course, the appropriate voltage rating. The capacitor value, per se, is not that critical but (for example) a 0.05 uF
No, no, never connect the neutral to any ground (e.g. the case, the grounding conductor in the 4-wire line, etc)! That is a violation of the electrical code and dangerous on top of it. I can't tell y
Not sure but someone else may have answered your reply but, if not, here is my reply. First, you shouldn't confuse the green wire with a neutral. It is not a neutral, it is a 'grounding' conductor -
Excellent email, Bill. Well reasoned, technically correct and backed up by data - nice job. This one I keep - for the rest, well, as you say, there is always the 'Delete' key (although the Delete key
The short answer is 'No' - you don't need to 'tune' the input of the amplifier. A 1.4:1 VSWR is pretty darn good. The VSWR straight through just says that your load (I'm assuming your antenna) is pre
Someone else noted that CQ Magazine has CD's with all the issues of Ham Radio on them. The web site is: <http://store.cq-amateur-radio.com/Categories.bok?category=Books%3AHam+Radio+Anthologies> If th
Found an EFJ components catalog from the mid-1980's, extracted the tube socket portion, scanned it and placed it on my web site. <http://sites.google.com/site/wa2cky/> The sockets are for moderate po
Yes, I think you have got it right. The white wire (the neutral) is not used when you are running on 220/240 VAC. You only need the neutral if you have some 110/120 VAC loads in the device - the TL92
Posting this for a friend (Bob, W1PE ) - I'll pass the results on to him - -- Hi All.. Does anyone know what the Russian equivalent is of the Eimac 3CX400A7 or 8874 tube??? I have been told there is
I have a bit of a 'chicken or the egg' problem. I have 2 vacuum variables I would like to sell but everyone, myself included, would like to know if they will still handle HV. I don't have a HiPot tes
Wonderful summary - I like it! Great advice for first PA - almost makes me want to start one myself! Hummm - I've got all those parts leftover from the 4-1000A rigs. Hummmm - still have the rack. Hum
OK, the engineer in me perked up with the on-going thread that mentioned '...the Tesla effect..' Can someone, in technical terms, explain what the 'Tesla effect' is? Or what it is supposed to be? 73