RE: [Repeater-Builder] question for Group on Mastr III

2010-04-20 Thread Doug Bade
Any preamp like advanced receiver research would be suitable assuming one was needed. I have never seen a Mastr III that needs a preamp. unless maybe a tower top amp to recover feedline loss.. The front end has an awful low noise figure to start with.. Doug KD8B From:

Re: [Repeater-Builder] question for Group on Mastr III

2010-04-19 Thread DCFluX
I do not believe there is a factory pre-amp made for this unit. I believe factory spec is 0.35uV for 12dB SINAD. If you decide a pre-amp is needed I'd stay away from the super high gain GaAs FET type. I'd go with something in the 6 - 12dB gain range preferable with a helical front end. On Mon,

Re: [Repeater-Builder] question for Group on Mastr III

2010-04-19 Thread Ken Arck
At 08:41 PM 4/19/2010, DCFluX wrote: I do not believe there is a factory pre-amp made for this unit. I believe factory spec is 0.35uV for 12dB SINAD. If you decide a pre-amp is needed I'd stay away from the super high gain GaAs FET type. I'd go with something in the 6 - 12dB gain range