On Jul 14, 2007, at 7:57 AM, WD7F - John in Tucson wrote:
> Turned into a real challenge. Using an RF splitter to divide the > input and > a phased power combiner/bridge to sum the outputs, we manged to get > a very > stable and bullet proof PA that once transmitted all night due to a > controller malfunction. The heavy duty heat sink and a fan > allowed the > brick on the key operation with no problems. If a PA can't handle 48 hours of continuous key-down as-installed (fans if one must, etc.), it shouldn't be used on a repeater. > You can find it on K7IOU's micor conversion page at > http://home.comcast.net/~micorrepeater/220mhzpa.htm Thanks for sharing, John. It's on the "must read" pile! (GRIN) -- Nate Duehr, WY0X [EMAIL PROTECTED]
