Hi Dave,
Have a read of this
https://www.eham.net/ehamforum/smf/index.php/topic,122601.0.html
On Page 1, I give the part number that I used and on Page 3, N0XWR gives
more part numbers.
73 Mark N1UK
PS To answer your question about an increased wattage fan, yes this
will affect the operation of the fan during the turned off amp cooling
sequence when the voltage to the fan is supplied from 240V through the
thermal switch and via dropping resistors when you are running on
240V. During cooling, an increased wattage fan will run slower due to
the increased voltage drop across the standard sized dropper resistors.
On 10-Apr-19 7:10 PM, Artek Manuals wrote:
OK I searched the archives and though the question was asked a couple
of times over the last two decades I did not see a direct answer to
this question and what little info I did find is almost 10 years old.
My 35 year old TL-922 will likely need a fan in the not too distant
future, the original is nosier than I remember it ( been in the box
for 5 years). and as we TL-922 owners know there are no longer ( as
near as I can find) any genuine factory replacement parts for this
beast.
The voltage and the dimensions fro the fan are given known or easily
measured items but what I have not been able to find is what the
specified CFM rating or RPM specs for the are. Does anyone know the
CFM for the original fan and/or has anyone found a drop in replacement
in recent times from the likes of Mouser or Granger, etc. ?
Just to keep this thread focused ( I think as I read the archives that
as ham a required personality trait is to have Attention Deficit
Disorder (ADD) ...I know I qualify) .....I AM NOT INTERESTED in
modifying the unit for a 12V fan or a squirrel cage, etc... I am
looking for a DROP IN REPLACEMENT for the ORIGINAL FAN. My fan still
has a label on that says "CENTAUR CT3D55F 7.5 watts". So far a USA
google search has not produced anything useful near apparent possible
replacements all seem to draw 2 to 3 times the wattage (18-25w vs
7.5w) . I have not looked at the circuit to decide if that is a
problem but I suspect not
tnxs in advance
Dave
NR1DX
manuals@artekmanuals.com
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