Michael - Early XV144 transverters had a 5A resettable fuse and I note
from the latest manual that this has been replaced with an 8A resettable
fuse. Also, the later XV144 has ventilation holes in the top and bottom
covers.
I had a similar problem in that my XV144 cut out while transmitting and
could only be reset by powering down and then applying power again.
I replaced the original 5A fuse with an 8A and drilled holes like those
in the XV432 and later XV144. I also added a fan and drilled holes in
the PCB similar to those in the XV432.
My XV144 now runs much cooler and does not cut out like it did before.
73 de David G4DMP
In a recent message, DL5OCD <
[hidden email]> wrote ...
>i wondering if that is normal: when i transmit 20 sec. on FM at 15W, the
>transverter stops transmitting (no power output). When i switch to rx and
>wait 5 sec. the XV144 works agn for abt 20 sec.
>Is there a kind of temperature control which protect the transverter from
>overheat ? I didn`t find
>something in the circuit diagramm...
--
David G4DMP
Leeds, England, UK
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