Agreed Carl... This is why I'm building another 8877 amplifier. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/l
The AL-1200 uses a 3CX1200A7. Not the Z7. Different tube. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf
I use SHV connectors. They can be found on Ebay. See a picture of them in use on my 8877 amplifier and power supply at: http://s900.photobucket.com/albums/ac206/w7ry/8877%20Amplifier/ 73 Jim W7RY ___
Great idea.... I too am using 2 resistors for the HV return in my 8877 project. I wanted to have a resistor in the power supply as well as in the RF deck. I used a 2K in the power supply and a 2k in
I have RG-59 on my SHV connectors. Works fine with 4100 volts. Check out the specification of RG-59. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com
SHV cable connectors are available on EBay. Item number 260654463014 From the part number, they are for RG59 size coax. Jacks are item number 230240170954 73 Jim W7RY ________________________________
Do a search on EBay for SHV cable. There are a couple of pre made cables with RG59. Kinda pricey but one of them is a best offer. 73 Jim W7RY _______________________________________________ Amps mail
Ask Paul WD7S. He has bult several amplifiers this way. But he uses air variable caps, not vacuum caps. See http://home.earthlink.net/~wd7s/gallery_index.htm Also see: http://www.wv7u.com/yc156amp/pi
Pair of 4CX250Bs 80-10 meters. Separate power supply if I remember. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm
BUT you can only see the real output power if you have a peak reading wattmeter. If you have one, your good. If you don't you cannot read the real power output of the amplifier. 73 Jim W7RY _________
This from the ARRL Letter: SIGHTS AND SOUNDS The video of a tower worker "free climbing" at heights over 1700 feet has been making the rounds despite the best efforts of its originator to expunge it.
Looking for the April 1982 QST hints and kinks section for the SB-200. Anyone happen to have this? A Google search did not net anything. Thanks 73 Jim W7RY ___________________________________________
I found it on the ARRL site. Thanks for all the offers! 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/
I use hardware cloth. About 3/16" between the wires. Available in many sizes. Its usually galvanized. Available at most hardware and home centers. In other words, window screen with large holes. It's
Agreed! Ever try to hook a headlamp across an Astron power supply? Pretty tough to do.. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.
Nope! A linear type. And yes, the power supply was on. It was a 20 or 35 amp supply. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
The last SB-1000 that I worked on had a shorted plate transformer. So it's not unusual. Ameritron has replacements with instructions. The replacement is not a wire for wire replacement. 73 Jim W7RY _
Nope! Those are genuine Coleman lantern chimneys. That is what Drake used. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.co
If anyone would like to see the pictures of my TL-922 QSK mods and circuit board, you can see them here: http://s900.photobucket.com/albums/ac206/w7ry/QSK%20Modifications%20to%20my%20TL-922/ 73 Jim W
You should be able to pick up a 23rd edition on Amazon.com. 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listi