[Motorola] "Lunchbox" PT400

[Spencer Sholly]

Thanx for the info.  i will probly get around to fiddling around with them 
one of these days.

73,
+++++++++++++++++++++++++
Spencer G. Sholly <><
KB5WQW
Killeen, TX
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>From: "Geoff Fors" <wb6nvh at mbay.net>
>Reply-To: Discussion of equipment manufactured by Motorola 
><motorola at mailman.qth.net>
>To: "Discussion of equipment manufactured by Motorola" 
><motorola at mailman.qth.net>
>Subject: [Motorola] "Lunchbox" PT400
>Date: Sat, 2 Dec 2006 19:05:01 -0800
>
>There is a different battery box for these which uses just a bunch of D
>cells, and I do mean a bunch, but they last a long time and you can get 
>them
>on sale at places like Wal-Mart or Costco/Sam's Club.  Those boxes 
>sometimes
>show up on eBay, but usually attached to yet another PT400...
>
>The radios can be tested by using just an external power supply, but be
>careful because they use Germanium PNP transistors and the polarity is
>backwards from what you think.  They expect about 14 volts.
>
>The owners manual is useless.  I haven't seen one in at least 30 years.  It
>just tells you how to turn them on and set the squelch.  The service manual
>shows up on eBay once in awhile.  Motorola hasn't stocked the manuals in
>decades.
>
>The PT400 is basically a PT300 with an added-on transmitter power amp to
>give about 10 Watts, and the addition of a metering socket panel.  The 
>nicad
>battery box has contacts on the outside end to allow dropping into a 
>charger
>rack, which is not featured on the PT300.  The majority of PT400's seem to
>have been sold to the US Government.  The PT300 is actually an HT-200
>Handie-Talkie in a lunchbox housing with a power amp to give 5 Watts on
>transmit.  And, finally, the PT200 is just an HT200 in a lunchbox.
>
>If you do some searching on the net, someone somewhere had a schematic of
>the battery box and the power wiring on his website, I just don't recall
>where I saw it.
>
>
>Geoff
>WB6NVH
>
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