- to be clearer
That PA will have better performance and slightly higher gain at a higher supply voltage
The QMX will work best at its intended voltage?
While overdriving the PA should be avoided my point is that if there is then drive to spare increasing the input attenuator components R2,3,4 from its current '3.5dB ish' value to nearer 6dB (say 150, 39, 150? - you could? play with 39 ohm alternatives of 33R and 47R? ) will improve the input match considerably?
2 or 3 Watt metal oxide film resistors will be fine?
Bruce Akhurst