Low Power MaxTrac 900
Posted: Tue Jul 22, 2008 10:21 pm
I'm looking to make the MaxTrac 900 12W into something more reliable with lower power (without worrying about a PA burning up) for a repeater transmitter.
The VHF and UHF LPI Maxtracs just lack the last section of the PA.
But the Maxtrac 900 PA has the last three sections together in the same RF hybrid module.
The MaxTrac 900 RF board outputs about 200 mW according to the service manual.
How about just bypassing the RF module (MHW820-3???) at the output of Q3001 (MRF599??) on the 15W PA board?
What about just bypassing Q3001 and feeding the RF direct from the RF board to the RF module (5180110E03)?
The VHF and UHF LPI Maxtracs just lack the last section of the PA.
But the Maxtrac 900 PA has the last three sections together in the same RF hybrid module.
The MaxTrac 900 RF board outputs about 200 mW according to the service manual.
How about just bypassing the RF module (MHW820-3???) at the output of Q3001 (MRF599??) on the 15W PA board?
What about just bypassing Q3001 and feeding the RF direct from the RF board to the RF module (5180110E03)?