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Re: Svetlana's website ???
pentalab wrote: <snip> I had this same problem... it insisted that since I was in the USA there was nothing there for me. That was using my favorite browser, Firefox. I opened the dreaded Internet
By Tony King - W4ZT <w4zt-060920@...> · #279 ·
Re: Svetlana's website ???
Kathy&#92;(K5MWH&#92;)" <w5uc@...> wrote: ### I can't get into Svetlana's site either..... have not been able to.... for a couple of yrs at least. I printed out some of their stuff but not what u
By pentalab <jim.thomson@...> · #278 ·
Re: Passed 100 total members
Bob -- It would be interesting to compare this with the AMPS total, but that information has been kept secret ever since someone who got booted off of AMPS by the moderator/censor, downloaded the
By R L Measures · #277 ·
Passed 100 total members
Passed the 100 total members mark this week. de KR4DA Bob
By kr4da <kr4da@...> · #276 ·
HA-10 Conversion
Good Evening All: I am looking for information about converting the HA-10 Warrior for 160 meters. There is a Svetlana page with the info on it but I am told that we in the US are presently unable to
By Mike&#92;(W5UC&#92;) & Kathy&#92;(K5MWH&#92;) <w5uc@...> · #275 ·
Re: Water Cooling A GS-35
Silicone rubber is used to insulate HV wiring.
By R L Measures · #274 ·
Bird 5000H element resistor value?
I'm repairing a Bird 5000H element (2-30 MHz 5 KW) and the resistor in the slug appears to be wrong. What is the nominal resistor value for this element? TIA
By k8cu · #272 ·
Re: Water Cooling A GS-35
Does this mean there is no problem with routing the silicone cooling lines out of the HV end of the line? -John, N9RF
By jmltinc · #273 ·
Re: Calculating Grid dissipation revisted
060920@...> wrote: in a doubler. A doubler's caps only gets charged 60 x per opposite half cycles so half the stack is always being charged. ### A FWDoubler is nothing more than two 1/2 wave
By pentalab <jim.thomson@...> · #271 ·
Re: Calculating Grid dissipation revisted
pentalab wrote: <snip> <snip> true, but in the FWD, each half of the stack is charged on opposite half cycles so half the stack is always being charged. 73, Tony W4ZT
By Tony King - W4ZT <w4zt-060920@...> · #270 ·
Re: Calculating Grid dissipation revisted
wrote: #### I'd call that 1/3.... NOT 1/6th. What if I give a 5 min disertation? or some contester calss 'cq' for 3 mins straight? ### The big kicker is gonna be CW. Dashes are gonna be at least 3 x
By pentalab <jim.thomson@...> · #269 ·
4CX250
We have an EMI amplifier (IFI406) with 24 4cx250s in a TWA. one of them has a short between G1 and cathode. It comes and goes with heat and when it happens the plate supply shuts down. Anybody have an
By FRANCIS CARCIA <carcia@...> · #268 ·
Re: Calculating Grid dissipation revisted
ORIGINAL MESSAGE: wrote: ------------ REPLY FOLLOWS ------------ It really depends on one's manner of speaking and one's individual voice. Some people put relatively large pauses between words and
By Bill Turner <dezrat@...> · #267 ·
Re: toroid tank coil
80-160 meter tankcoil on a large toroid? Rated output is approx. 6 kW Hi Dick, One idea is to use two or three number 10 or 12 gauge enamel side by side wound as a ribbon, connected in parallel. They
By Sharalyn Koeppe · #266 ·
Re: Transformers on Wiki again...
Am 27.09.2006 um 03:25 schrieb craxd: Nothing really lost. Using the "history" tab on the page shows who did what with it. You could paste your version again in there... Your text is still available.
By Frank Goenninger <frgo@...> · #265 ·
toroid tank coil
What kind of (stranded) wire (or strap) can be used best to wind a 40-80-160 meter tankcoil on a large toroid? Rated output is approx. 6 kW Cheers, Dick PA3DUV
By PA3DUV <pa3duv@...> · #264 ·
Re: 4 Tube 811 Amplifier.
I have done some modifications to the shematic, so i have uploaded an revided shematic. I can't see the reason for floating the B-, to mesure the current i would just add an 0.1 ohm resistor between
By la3pna <snknutse@...> · #263 ·
Re: Calculating Grid dissipation revisted
The best way to measure a transformer gut temp is measure the winding resistance cold then hot and determine the real temperature rise by the copper constant. I think it is about .4%/degreeC. wa1gfz R
By FRANCIS CARCIA <carcia@...> · #262 ·
Re: Transformers on Wiki again...
All, I hate to say that some dumb a$$ deleted almost everything I had written except some corrections about the windings. I'd about bet they were the one who wrote the screwed up stuff I had to
By craxd <craxd1@...> · #261 ·
Re: Calculating Grid dissipation revisted
During an ahhhhhhhh, I see about 1/3 of A0 anode current. If one transmits half the time, that's a duty-cycle of 1/6.
By R L Measures · #260 ·