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BELOW SHOWS THE TESTED RESULTS OF THE PROTOTYPE KITS The EME139 Board can be used for various applications up to 2500MHz. The board can easily be cut by 2mm along either side with a bench grinder to raise the filters frequency to 2400MHz. All the test results below were very consistent between Prototype boards with no tuning required to peak output power. Some improvements can probably be made around the ERA3 Multiplier stage to improve efficiency, & achieve more output power, but we didn't think that it was worth the effort for a couple dB more gain.
CONSTRUCTION IMAGES OF THE EME139 KIT3 PROTOTYPE KIT ABOVE IMAGE SHOWS HOW THE TINPLATE OR
BRASS STIP IS FABRICATED TO FIT THE BOARD.
ABOVE IMAGE SHOWS 1MM DIFFERENCE BETWEEN
THE BOTTOM OF THE PCB &
ABOVE IMAGE IS OF BOARD 1 WITH THE ERA AMPLIFIERS
ABOVE IMAGE IS OF BOARD 2 SHOWING THE
BRIDGING ACROSS THE STRIPLINES
ABOVE IMAGE SHOWS BOTH BOARDS READY TO
BE CONNECTED TOGETHER.
ABOVE SHOWS BOTH BOARDS WITH TINPLATE
SIDES & HOW THE PCB PINS ARE KEPT LONG TO
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