Re: [Repeater-Builder] Re: GE Mastr II Power Drop

2005-03-04 Thread Kevin Custer
Gerald, You are correct on the UHF modules, they are 50 ohms in and out and won't need modified. Not the case however in VHF and other bands... Kevin Custer Gerald Pelnar wrote: Neil, I was looking at some UHF micor mobiles a while back with this in mind. You shouldn't have to cut the

Re: [Repeater-Builder] Re: GE Mastr II Power Drop

2005-03-04 Thread Neil McKie
Yes, I agree with you in regards to the UHF Micor and MSR 2000. The UHF Micor microstrip circuitry are all 50 ohm in/out sections. Very handy for trouble-shooting too I might add. I usually use a Bird Wattmeter for this ... and have a 1 watt slug which makes it that handier. In

Re: [Repeater-Builder] Re: GE Mastr II Power Drop

2005-03-03 Thread Kevin Custer
In Class C operation, especially when considering repeater operation, its way better to run an appropriate sized amplifier full bore than it is to run a bigger amp at 1/2 or 1/3 its rating. Class C amps run cleaner when properly (over) driven, as they will get spurious when under driven.

Re: [Repeater-Builder] Re: GE Mastr II Power Drop

2005-03-03 Thread Neil McKie
Kevin, Have you or anyone else figured out where to cut a Micor PA board and modify for a 50 ohm output what is remaining to be able to use the same board but at a lower power? Ie: take a 100 watt PA Board, cut off the 4 transistor finals and use the driver stage? Neil -

RE: [Repeater-Builder] Re: GE Mastr II Power Drop

2005-03-02 Thread Thomas Oliver
Does the amp have separate driver and final boards? if so you can take the final board right out and just run the driver it should be good for 15-20 watts on that size heat sink. If it is the amp I am thinking of the driver board is the same board used in MVP and Exec II's there are others out