[Johnson] Re: DO NOT Solid State the Power Supply in your Ranger!!

[Glen Zook]

125 VAC is now the pretty much accepted standard for
line voltage these days.  I worked for TXU (the
electric company for about half the State of Texas)
for 10 years until they eliminated the
Telecommunications Department in May of 1999.  TXU has
been maintaining 125 volts +/- 2 volts (normally on
the "+" side at least during the summer months) for
quite a number of years.  This is due to the
additional load requirements that air conditioning
puts on the system.  Most other electric companies
have adopted the same standards.

As for the problems with your TR-4C tubes, frankly, I
have never run into such in either my equipment or the
equipment that I service for others.  I have worked on
various Drake 4-Line equipment that belong to locals
that still have a number of the original tubes in them
and have never had to replace a single tube in any of
that equipment.  Thus I cannot recommend anything that
may be wrong in your particular power supply.  But, I
have not seen the problem in any solid-state supplies
in either my own equipment or in the numerous units
that have been sent in for alignment, etc., over the
years.

Glen, K9STH  


--- Sherrill Watkins
<Sherrill.Watkins at dgs.virginia.gov> wrote:

My Drake TR-4C will damage some of its tubes in about
18 months; based about two or three on-off cycles per
day. I have quit using it because of its tendency to
damage tubes so quickly. I plan to install a
time-delay relay in the center tap groud of the power
supply to allow the filiments to warm properly before
the B+ is applied before I use it again. My high AC
line voltage (125vac!) doesent help matters.

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco


		
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