In a message dated 10/28/2007 10:48:30 P.M. Eastern Daylight Time,
hphillips@mho.com writes:
Can someone tell me what the difference is between the LK550-ZA or
LK550-ZB to the LK550-ZC?
Thanks,
K7XM
Hugh
Usually the difference was ZA was a straight amplifier with no protection
circuits like an Sb-220. The ZB had some protection circuits like High plate
current shut down, the ZC had several more protection circuits, Like High SWR
shut down, high grid current shut down. Other than that they are pretty much
the same. At least that was so with the LK-500 series. Lou
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