[Repeater-Builder] TLE1713A Amp

2010-03-20 Thread Mike in Joliet
I am putting together a UHF repeater and have a TLE1713A on hand.  I need 
clarification on a few things so that i don't end up with a fried amp when I 
power it up.

What i have gleaned from various sources thus far:

1.  Rated for 2 watts input max to give about 75-90 watts out.
2.  Designed for 450-470 MHz but works just fine down to about 440.
3.  It may be advisable to operate it at reduced voltage.  11-12V rather than 
13.8V.
4.  If it fails, junk it.  Difficult to repair and parts are scarce.

What I still am fuzzy on:

1.  I am guessing that the left coax viewed with the power TB on the right is 
the input and the right coax is the output.  Correct?
2.  The power control is derived from a control voltage on the CTRL pin at the 
right edge.  What is the voltage and current requirements?  I get that 
connecting this up to the operating voltage turns it full on, but it looks like 
it may be the power for the initial driver stage by the way it is connected 
internally.  Hence the question on the current requirement.  I don't have a 
schematic.  So my assumption could be way off.  Correct me if I am wrong.
4.  The M+ and M- pins.  I assume this is for metering?  If so, is it for 
current draw or output power?  What type of meter would be appropriate?  A 
generic one with x mA FS to read XX?
5.  Explain the rationale for the advantages of operating it at reduced voltage.
6.  What is the square connector at the upper right corner used for?
7.  What is the total current draw when operating at max output for sizing my 
supply?

Thanks,
Michael Dinger
W9PXZ




[Repeater-Builder] Yeasu FTR-5410

2010-01-23 Thread Mike in Joliet
I am working toward getting this old beast up on the UHF ham band and am 
looking for someone that has familiarity with them.  I need a bit of advice on 
a couple of things.

In no certain order:

1. interfacing it to an ICS controller.  I want to bypass the internal 
controller and ID unit and just use my own.

2.  I plan to use an old Micor PA.  They have a drive requirement of only 1.5-2 
watts.  Can I just plug it directly into the exciter and leave the 10w amp 
section float?  Or is there enough adjustment on the pot to get it down that 
low?

3.  Is the ptt drive  the same thing as the PTT?  What I mean is, if I tied 
that line to the PTT on the ICS controller, is that correct?

I have the manual from the main site.  Just looking to find some advice from 
someone that has done this before.

Michael Dinger
W9PXZ