[Motorola] PT300

[Glen Zook]

Most of the older portables that I have ever worked on
would make it down to 2 meters without any problem
even those that were supposedly on the "high" split.

I put in the first Motorola portable and paging repair
facility away from the Chicago area plant (this was
before the Florida operations) in the Forest Park,
Georgia, Motorola C&E office in 1966.  This was during
my senior year at Georgia Tech.  Also, I owned the
Motorola reconditioned equipment center for the
south-central U.S. from 1970 until Motorola went out
of that end of the business in 1979.  As such, I have
seen a "few" of the portables!  Also owned a two-way
radio sales and service business until 1989 when I
went into consulting.

The most that I have ever seen that had to be done to
a "high" split (and that was very rare) was to add 5
pf capacitors across a couple of the lower frequency
coils in the transmitter and the same with the
receiver "front end". 

It is always "safe" to use high-side injection instead
of the "normal" low-side injection on the receiver. 
This insures that the oscillator - multiplier "string"
in the receiver is operating within the "normal"
frequency range.

Glen, K9STH


--- Tom B <tbryan@nova.org> wrote:

That depends on the split

=====
Glen, K9STH

Web sites

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

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