Jerry's Ham Shack
2020 Call sign: K JXH (Kilo Five Juliet Xray
My Ham Radio Shack.
Site Index: ( most are now mint like condition)
Kenwood TL922, IC-R70, The Pulstar ATK2D is a real nice tuner. I found the kenwood in near mint condition.
Antenna's G5RV up high 14 foot to my feet and 16' more for 35foot apex. The pulley and rope allows easy service to diPole.
The Roof Slope is 1/1(rise/run) 45º degree's steep.
The vertical antenna the ZERO FIVE 33 foot slide show putting it up.
Rugged, looks good, less angry neighbors, no guys, Buy it here.
Very few random Balun's work right, but this one will.
The upper core (Toroid) is The 4:1 transfomer, and that lower one is 1:1 and blocks all RF off the outer skin of my long COAX.
I am doing all things posssible to prevent the feed line from radiating RF....
We (I asked the maker) Modified from OCF to "T" terminals. ( maker Balun designs 4116ocf did it for me.) below is stock photo, commented in Red.
Performance is great. (need to block common mode currents , so the 4116T is best for sure.)
Favorite books and links:
Arcing can happen.
One great quote ," all tubes have gas if you get the plate voltage high enough , way beyond allowed on the data sheet."
The fact is the getter in the tube, eats gas every day, until the getter is now consumed. ( the glass in the tube is special to not let gas past the atoms of glass ! not trivial this at all.)
(Any transmitter PA can arc over inside, see how and why here,,,W8JI)
Check for parasitic oscillations with a scope or grid dip meter .
If you run the tuner into a dead open feed line or antenna , the tuner my arc over. (QSL MAG)
See my page on TUBE (gas) can be caused by POOR TUNING too.... (due to voltages out of control)
Before using any tuner , please read this and the great warnings there . (by: BARNES, DAVE J, WB4KDI , Thanks! Dave )
One of the best BALUN pages in the web, and coverage on pro/cons of materials and methods!
Just as good or better Rick Westerman
My most loved book of all, is out of print now, It is one of the best ever, is "Experiment methods in RF DESIGN" top author in list , Wes Hayward W7ZOI, ISBN: 0-87259-879-9 or ARRL #8799
(what a treasure , that book !) and all ARRL books !
One of the first hollow state devices, called tubes (valves) used were for telephone repeaters seen here. All elements in view clearly. Telephone trunk line amplifiers.
Version 12: 11-13-2016, passed my Extra Class test, today... hooo hooo. ¯\_(ツ)_/¯