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for future reference, try using a search engine: search input: lescom top 2 search results: #1 Your Public Power Partner | Lincoln Electric System www.les.com Your Public Power Partner. For over 50 years, we at LES have been proud to power the many homes, businesses and governmental...

EZNEC VERSION 5.0 SOURCE DATA "42.44, X = -20.44 ohms = 1.598 SWR." R42.44 -jX20.44 ≠ 1.598:1 SWR Z = sqrt Rsq + Xsq Z = sqrt 42.44sq + -20.44sq Z = sqrt 1801.1536 + 417.7936 Z = sqrt 2218.9472 Z = 47.10570241488816 ohms SWR = 50 / 47.10570241488816 SWR = 1.061442616004747 SWR = 75 /...

24-32 MHZ / ANTENNA TUNER / PARAMETRIC EQ / 500W RF POWER IZ8SNW * ITALY

http://macoantennas.net/files/MACO_V5000_edited.pdf

so you decided to go with horizontal polarization.

given 100 watts of output from a fixed 50 ohm transmitter into a 50 ohm load, how can we confirm the output impedance of the transmitter? since Z = E / I, we measure the voltage and current present at the transmitter output. in the meantime we have already been given P and Z. now we derive I and...

i"ll just leave these here. mrf455: https://cdn.macom.com/datasheets/MRF455.pdf sd1446: http://www.cbtricks.com/datasheets/uploads/sd1446_sgs_thomson.pdf

the swr protection afforded rf power transistors is contingent on their operation within the device manufacturers specifications. "no high swr protection circuit needed." the user can implement this protection anytime he wishes...

given 100 watts of output from a fixed 50 ohm transmitter into a 50 ohm load, how can we confirm the output impedance of the transmitter? since Z = E / I, we measure the voltage and current present at the transmitter output. in the meantime we have already been given P and Z. now we derive I and...

you're welcome.

i can't promise anything but if things slow down here a bit i'll take a look. thanks CC !

Capt Crunch posted: "One pushed 2X2290s @ 160 watts pep into it and it did 675 watts PEP." let's look at the gain of the 4X2SC2879. the minimum gain of a 2SC2879 is 13 db. with a power multiplier factor of 20X. in a transistor rated for 100W PEP output at 13 db. the required drive input for...

anything is possible when the transistors are operating in their saturation region.

nice job Rick. functional, simple and straight forward. https://www.nxp.com/docs/en/data-sheet/MRF9120.pdf

i don't need to, all error contains within itself the element of its own destruction.

https://www.angelfire.com/electronic/cbdoctor/conjugatematch.html

"There are more things in heaven and earth, (your name here), than are dreamt of in your philosophy." ~ William Shakespeare ~

"the swr on the transmission line between the antenna and a matching network at the input to the line is determined ONLY by the mismatch conditions at the load and IS NOT CHANGED or BROUGHT DOWN by the matching network." "any lowering of the swr by using the device indicates ONLY the mismatch...

is that one slinky or two? steel or brass? you might want to take a look at this if you haven't already seen it. https://www.nonstopsystems.com/radio/frank_radio_antenna.htm#intro

the complete cobra 29ltd service manual. download and read the section entitled "theory of operation/s." http://cbtricks.com/radios/cobra/29ltd_29ltd_st_29wx_st/graphics/cobra_29ltd_sm.pdf it would appear as though someone was attempting to increase the frequency coverage.