SB-401

[Mark Graalman WB8JKR]

  Terry,

 A lack of idle current would have nothing to do with
the alignment, neither would intermittent operation
unless the HFO was set incorrectly. I'd take another
look at the relay and MAKE SURE the contacts are
mating properly. I'd also check the bias set pot and
make sure there isn't an intermittent there that would
occasionally place the unit in a cutoff state.

73,  Mark  WB8JKR


On Sat, 9 Oct 2004 21:00:59 EDT Terry England <W9cau at AOL.COM> writes:
> Hello, i've got a SB-401 that transmits sometimes and than it quits
> when  you
> turn it off or change bands. But sometimes it will work after you
> turn it
> off or change bands. I have cleaned the switches and relays and it
> still does
> the same thing. If i switch the mode switch back and forth sometimes
> it will
> start working again, and some times not. Also there is no ideling
> current when
> this stops working also. When it works it works fine and everyone
> says it
> sounds  great. My next step i think is a re-alinment of the
> transmitter.To i have
>  noticed that the output is down a little and other times it is up a
> little.
> It  shows 60w sometimes than 75w and other times 95w. Any other
> ideas? I am
> useing  this 401 with a SB-303 as far as i know these two have been
> used
> together since  they were built. Thank you all for reading. Terry
> w9cau

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