What year did the FCC increase the legal limit from 1 KW average plate input power of all stages contributing power to the antenna to 1.5KW PEP output? Years ago if you were running a grounded grid a
You may get 120 Hz modulation of your signal if you don't use bifilar windings. The large 60Hz current may modulate the permeability of the ferrite (or even saturate it) and produce a modulated imped
That reminds me, our club has 36ea RCA 305 (7.6KV 5 amp stacks). I would like $20 each to put into our clubs treasury. Any takers? These are from a working 60KW TV transmitter. 73 Bill wa4lav
This reminds me of a homebrew amplifier I got some years ago. I replaced the missing parts and installed a good 3-500z only to find the output was very low. I assume that why the builder gave up on i
can it be equiped with photon topedos or phasers? Prototypes are working flawlessly :) http://www.sandlabs.com/etf.htm Please do not hit me to hard :) Alex ___________________________________________
So if I want to have add resistance in series with the power line to match the power supply to the line? This will improve the efficiency of my power supply? Hmmmmm You can't conjugate match most DC
Another possibility is a 2 stage grounded grid amplifier. use a 4-125A gg to drive a pair of: 3-500Z 4-250 4-400 The driver and amplifier tubes could use the same HV power supply. The 4-125A would ha
a passive input network could be used if the input resistance was 450 oh.ms and a 1:3 turns ratio(1:9 impedance ratio) transformer used. This would require less than 4 watts 73 Bill wa4lav --Original
Alex, Do you still insist that you have copper machined to 1/30 wavelength of visible light so that you can get good thermal transfer for your transistors and at a reasonable price as well? You seem
There has to be some kind of start winding in any single phase motor. It may be a shorted turn in a shaded pole motor ( small motor) or an high value inductive winding for larger ones (which may stay
Apparently Alex has read something about STM. Scanning Tunneling Microscopy. There is a way that the probe ( which if made properly comes to a point of just a few atoms) can be used to up an atom or
Not so. Regardless their mission the military is best at war, fighting and killing. That is what it is designed to do. It is not good at civilian functions. This is why they fail in so many police ov
Our Club is going to sell all the rigid coax ( 3-1/8" and 6 1/8") that was inside an UHF broadcast transmitter building. Most of it is short pieces and elbows. Also there are 3 patch panels (one weig