YOU ARE PURCHASING A 3-PACK OF QRP MODIFIED 20M HAM RADIO CRYSTALS. THE INTERNAL ELEMENT HAS BEEN REPLACED WITH THE HC49/S CRYSTAL. ONE EACH INCLUDED, 14048, 14050 AND 14060 KHZ FUNDAMENTAL FREQUENCIES.

THESE WILL WORK IN LOW POWER TRANSISTOR OR VACUUM TUBE CIRCUITS. THEY WILL SOMETIMES NOT WORK IN TUBE CIRCUITS WHERE THE OSCILLATOR PLATE CURRENT EXCEEDS MORE THAN A FEW MA.

MOST HAMS SEEM TO HAVE FEW PROBLEMS WITH THESE LITTLE CRYSTALS, BUT NOW AND THEN I'VE HEARD OF INSTANCES WHERE THEY WILL WIMP OUT IN ONE OF THOSE ONE TUBE 6L6/6V6 SINGLE TUBE OSCILLATOR/TRANSMITTERS. IT DEPENDS A LOT ON THE CIRCUIT.

IF YOUR CIRCUMSTANCES ARE IN DOUBT, THEN I SUGGEST PURCHASING THESE SAME CRYSTALS WITH DOUBLE ELEMENTS, WHICH I HAVE LISTED ON ANOTHER AUCTION. MY HOMEBREW 50CD6 TRANSMITTER DOES NOT LIKE ONE ELEMENT, BUT IN DOUBLES THEY WORK GREAT, EVEN AT 100 MA PLATE CURRENT.  

I HAVE SEVERAL SETS AVAILABLE, SO THESE ARE GENERIC PHOTOS. ALL CRYSTALS WILL BE IN THE FT-243 HOLDERS. THE CRYSTALS ARE NEW, BUT THE HOLDERS ARE FROM OLD USED STOCK. I SIMPLY POPPED OUT THE ORIGINAL CRYSTALS AND REPLACED THEM WITH THE CRYSTAL TYPE THAT YOU SEE IN THE SECOND PHOTO.

SHIPPING TO THE UNITED STATES ONLY.