|  
 Based on our extensive experience of broadband power amplifiers 
                this unit will produce 100 Watts 24 hours a day at any single 
                frequency from 87.5 to 108 MHz. The power amp will never have 
                be returned or sent to a specialist for a re-tune if a frequency 
                change is required.
 
 The 100W power amp is available as a 13.8V DC unit requiring around 
                12 amps. This is most useful for remote sites that use heavy duty 
                vehicle batteries as back up. There is also an high quality mains 
                power supply available to accompany this power amp. The mains 
                power supply has a solid 13.8V DC output capable of providing 
                an additional continuous 4 amps to power a driver transmitter 
                or power amp of 20/25W.
 
 For maximum reliability and system redundancy the 100W power amp 
                is designed around two rugged 50W broadband power amps paralleled 
                together using a broadband susceptance compensated Wilkinson combiner. 
                In the unlikely event of a 50W power amp module developing a fault 
                the other 50W power amp will continue to run keeping the station 
                on air. This is of great benefit to stations that carry advertisements 
                and cannot afford a shut down at any time.
 
 The 100W power amp is designed to be stacked easily. For example, 
                stacking two 100W power amps with two stacked dipoles will give 
                about 500W EIRP or stacking four 100W power amps with four stacked 
                dipoles will give about 2000W EIRP.
 
 To make the 100W PA as compatible as possible with our existing 
                power amps and transmitter/drives the 100W power amp has been 
                designed to take the following drive levels 25W or 30W, this drive 
                level needs to be stated on ordering.
 Test results @ 13.8VDC, 50 Ohm Load, 
                Bird Thruline Power Meter.
 
                 
                  | Freq. | i/p 
                    (w) | o/p 
                    (w) | i/p 
                    SWR | DC 
                    (A) | Efficiency | 2F |   
                  | 88 | 30 | 97 | 1.7 | 10.2 | 69% | -50 
                    dB |   
                  | 90 | 30 | 102 | 1.8 | 10.6 | 70% | -50 
                    dB |   
                  | 92 | 30 | 108 | 1.6 | 11.1 | 71% | -50 
                    dB |   
                  | 94 | 30 | 106 | 1.6 | 11.0 | 70% | -50 
                    dB |   
                  | 96 | 30 | 106 | 1.5 | 11.0 | 70% | -54 
                    dB |   
                  | 98 | 30 | 102 | 1.5 | 10.2 | 72% | -51 
                    dB |   
                  | 100 | 30 | 102 | 1.4 | 10.5 | 70% | -51 
                    dB |   
                  | 102 | 30 | 100 | 1.4 | 10.3 | 70% | -51 
                    dB |   
                  | 104 | 30 | 102 | 1.4 | 10.5 | 70% | -52 
                    dB |   
                  | 106 | 30 | 107 | 1.5 | 10.6 | 73% | -52 
                    dB |   
                  | 108 | 30 | 102 | 1.6 | 10.7 | 69% | -52 
                    dB |   No trace of ANY signal measured 
                at 0.5F, 1.5F or 2.5F.   |